digital batteries

Organic solar batteries, by definition, are the central part of the organic matter from the solar batteries. We are not familiar with organic solar batteries, it is reasonable in the matter. Today, mass production of solar batteries, silicon 95% over-based, while less than 5% is made by other inorganic materials.

The concept of organic solar batteries looks like a very new, but in fact, history does not fail – with the history of similar silicon-based solar batteries. The first silicon-based solar Laptop batteries is a Bell Labs was created in 1954, and its photovoltaic conversion efficiency is about 6%, while the first device is an organic photoelectric conversion by Kearns and Calvin established in 1958, the main material Magnesium phthalocyanine (MgPc) dyes, the dye layer is sandwiched between two electrodes of the work function between different files. In this device, they observed the open circuit voltage of 200 mV, the photoelectric conversion efficiency of low are embarrassed to speak. Start the beginning of the sentence Gao Xia Li

After 20 years, innovation in the field of organic solar batteries much, all the device structures reported are similar to the 1958 edition, only two changes of work function between different electrode materials in organic semiconductor variety. The principle of these devices are presented in Figure 1: organic semiconductors in light of the electronic energy levels are delighted homo the LUMO energy level, resulting in a pair of electrons and holes. Electronics is an occupation with low extraction electrode, the hole was from electrodes with high functionality infill electronic form and a photocurrent under the illumination. In theory, the film organic semiconductors and operate two different working electrode contact will result in a different Schottky barrier. This is the charge Photoinduced may be addressed to move from base. And therefore such a structure, the Dell Inspiron 1420 battery is often called “Schottky-type solar batteries organic.

In 1986, the industry is facing a historic breakthrough. To achieve this breakthrough was a Chinese, Kodak, Dr. Deng Qingyun. This era of organic solar batteries used in organic materials, mainly with high efficiency visible light absorption of an organic dye. These dyes are generally used as photosensitive materials, which naturally forces Kodak. Deng Albatron device in the basic structure is a kind of perylene tetracarboxylic derivatives (Tang and former call PV) and copper phthalocyanine (CCEP), consisting of bilayer. Bilayers is the essence of a heterojunction, Deng is the old idea of two kinds of semiconductor materials to mimic organic inorganic heterojunction solar batteries. He has prepared solar batteries, the photoelectric conversion efficiency of around 1%. Even if they are even worse with silicon batteries, but compared to previous Schottky-type battery is a great improvement. It is a fruitful idea to search for organic solar batteries has opened a new path now that the structure of the bilayer heterojunction organic research solar Dell Inspiron 1501 battery is still one of the keys.

Bilayer-type structure heterojunction organic solar battery shown in Figure 2. As the semiconductor material organic body after absorption of photons generated hole – electron pairs, the electron injection materials in organic semiconductor as a receiver, the hole and electronics were isolated. In this system, the p-electron donor, electron acceptor, compared to n-type, hole, and electronic transmission to the two electrodes, respectively, forming photocurrent. And the above “Schottky-type batteries” with the characteristics of these structures is the introduction of a mechanism for charge separation. Compared to the interaction of semiconductor silicon, organic molecules are much smaller between the different molecules and the HOMO and LUMO can not be combined to form a continuous phase in the whole body of the conduction band and the valence band. Carrier transport in organic semiconductors need to load different molecules by a “jump” mechanism for achieving macro-economic performance is the carrier mobility is much lower than in inorganic semiconductors. At the same time, small organic molecules have been excited by absorption of photons can not be done in silicon produced in the conduction band and free electrons leave a hole in the valence band. Optical excitation of small organic molecules, the electrostatic interaction arising through a combination of hole – electron pairs, which is commonly called “excitons (exciton). The existence of excitons limited time, typically on the order of magnitude less than a millisecond, without complete separation of electrons and holes are complex (recombinant), released its energy absorption. Clearly, the isolation of the free electron and hole excitons, light current does not contribute. Yi Gu organic semiconductor in the exciton separation efficiency of the conversion efficiency of opto-electronic Dell Inspiron 1520 battery has a crucial impact.

For the Schottky-type batteries, the separation efficiency of excitons is very problematic. Light-induced formation of excitons, only the diffusion layer in the Schottky junction in the area of the Festival on the electric field can be separated. Other places to form excitons, you must first be transferred into the diffusion layer may be formed in light of the current contribution. However, the migration of excitons in organic dye very limited range, usually below 10 nm. Therefore, most excitons into electrons and holes in the separation of composite lost before. In batteries heterojunction organic results, it is obviously increased the separation efficiency of excitons. The electrons in the LUMO energy level of molecules injected into excited levels of electron acceptor LUMO energy, this process is essentially the separation of the excitons. The interface between two layers of biofilm is not formed. In the process of preparation (thermal evaporation – deposition, or spin solution-coating method) two layers of film will always form an interpenetrating structure, and therefore greater surface interface. In the body of material to the body resulting from the phase of excitons, the dissemination can be more easily access the interface of two materials, electronic materials, the LUMO energy levels in the receiver to achieve charge separation. At the same time, many studies have shown that the equipment and receiver Dell Inspiron 1521 battery can absorb the frequency corresponding to the formation of exciton-photon, and then the hole in the HOMO energy level to the body of the material injected into the level HOMO energy in the file. Therefore, the exciton can simultaneously on both sides of the interface in the double membrane formation, and diffusion at the interface were isolated. In short, compared to the Schottky-type batteries, with donor assistance – receptor double-membrane structures can significantly improve the separation efficiency of excitons.

In 1992 the Turks Sariciftci (see Salic Karlovci) in the United States found that the state of electronic excitation can be very quickly from molecules of organic semiconductor injected into the C60 molecule (structure shown in Figure 3 ), while the reverse process is much slower. In other words, the semiconductor materials and organic C60 interface, the exciton can reach a very high rate of charge separation and charge separation after the compound at the interface is not easy . Because the C60 is a very large structure conjugate surface, the electrons in orbit by the 60 carbon atoms, the molecular composition of the track from the field, you can play an external mail stabilization effect. Therefore, C60 is a good acceptor of electrons materials. In 1993 Sariciftci on the basis of this discovery is made of heterojunction solar batteries PPV/C60 bilayer. PPV is generally called “poly styrene hold” is a conductive polymer (on conducting polymers will be detailed in another article), is also a typical P-type semiconductor material organic. Since then, with C60 as electron acceptor bilayer heterojunction solar Dell Inspiron 1525 battery after another.

Subsequently, researchers in such solar batteries based on the proposed also an important concept: the mixed heterojunction (bulk heterojunction). “Mixed Heterojunction (bulk heterojunction)” written in English “Bulk Heterojunction,” here is my own translation, it remains a fairly accurate sense of meaning. “Mixed Heterojunction (bulk heterojunction)” concept to the separation process of photoelectric conversion of excitons and transport the carrier in these two constraints. Double-layer film solar batteries, although both films have a larger area of interface, but the exciton is still only in the areas of surface separation, the distance from the interface of the exciton generated by the interface are not yet moved into the enclosure of the. And the rate of organic matter mobility carriers are generally very low at the interface between the gate electrode to the significant loss of movement in the process. These two limits of the dual membrane electro-optical conversion efficiency of the VGP-BPS10 battery.

The so-called “mixed heterojunction is a body of material and acceptor materials are mixed, through co-evaporation method or a spin-coating film made of a mixture. The structure shown in Figure 4, the donor and acceptor to form a mixed film where only one component of the region, including Blue represents the electron donor, electron acceptor yellow. Products at any exciton localization can be contacted via short path to the physical interface with the receiver (eg, surface galling), and therefore the charge separation efficiency has been improved. At the same time, the interface is formed on the load flow the child may also be a shorter way to reach the electrodes, and thus compensate for the shortcomings of the carrier mobility. To meet the requirements of the electrode must be selective electrode. In other words, when the donor and the negative contact, the donor can not be transmitted to the hole in the anode. In a mixed heterojunction, such as the contact is in fact inevitable.

Such a structure is naturally the ideal state of the entire phase donor can be put in contact with the cathode, while all receivers can be contacted at the anode. In the non-ideal state, unable to make contact with the cathode to the mass of the positive charge appears on can be transmitted to the battery on the positive, and therefore this structure is not perfect. However, compared to battery membrane bilayer, the effectiveness of these structures is also clear that organic solar batteries stored in batteries to more efficient hybrid heterojunction remain.

Fruit of the battery is inserted inside the chemical activity in fruits of different metals, such as fruits, electrolytes that are acids can form a galvanic cell.

Fruit batteries generating principle is as follows: two types of electrochemical activity metal is not the same, which side of the keenest sheet metal may be a replacement of acidic substances in fruits and hydrogen ions, as produces a positive charge, the whole system need to maintain stability (or generate electric field, electric field caused by the results below), so the composition of cases, the original Laptop battery, the electrons circuit to maintain system stability, so in theory the current size of the concentration of direct and acid linked to (if it is expressed in terms of the case, then this function and the ionic strength but also Quantitative and qualitative relationships relationship between plasma concentration), in this case, if the loop length change, which would inevitably change the loop, it will also cause changes in voltage.

Fruit production of batteries

Do you know that certain fruits and vegetables you eat can also generate electricity do? Try the following experiment!

Tools and Materials

• 3 lemon (lime may be)

• 3 pieces of bright copper Ge. We use the coin

• 3 Ke galvanized screws (you can also use other metals more active, not necessarily zinc, both for replacement on the list)

• 4 son, preferably with a clip on the wire.

• Knife • 1 small paper label pasted

• Low voltage driven light-emitting diode (LED). We use Radio Shack model 276-330.

• 35 rounds mm plastic film or similar small container. Better to use a black hull opaque film.

• a nail or small punch

Zinc-plated screws are available in most hardware stores. They are also known as “electroplating” screws. For galvanized screws to prevent them from rusting, which makes live appearance looks bright. Wire belt clip can be purchased at hardware or electronics store.

Production Method

First, put all the lemons, one at a time. Side of the rotating part of the hand pressing them until you think they have become a little “soft.” This is done to allow internally generated more lemon juice. This step is very important because it can help you achieve the best results of the lemon Dell Inspiron 1420 battery.

Be galvanized screw screwed into a lemon about 1 / 3. Using a knife, be careful with the lemon on the other side 1 / 3 Cut a 1 cm incision.

Note: The best use of a knife by an adult. In all cases, please “watch” and “Slow” using a knife.

Copper in the incision until the coins in half lemon.

Note: Make sure you use a shiny new coin. If the room in the former, but not brilliant, polished with 100 JIES parts.

Whether or not you believe that you can now get underway lemon! Like other batteries, such as coins, is the positive (+) The screw is negative (-). Unfortunately, the battery is low. However, if you have several of these cells, they can be connected together to form a lemon battery.

As the parts and screws in the other two lemons. Then, using the son and clips, will be the first of a lemon on the screw with the second piece on the whole lemon, and so on, there are three lemon cells connected together. Also a coin to the first and last of a screw connected to a wire with a clip.

Finally, to connect to the first sequence on the part marked “+” and connect to the last screw nailed clip marked “-.” Like a real battery, as the lemon battery is also positive (+) and negative (-).

When the series of articles, these lemon co-produced the battery cells in series with a small flashlight, some produced by the same voltage, or electric potential of about 2.5 volts to 3 volts between the two . But the lemon battery can not produce enough current to the bulb flashlight.

How can we identify the achievement of specific groups of the battery? One way is to require only 2.5 volts to 3 volts, and does not require too much current, the electrical equipment connected to the hp Pavilion dv4 battery. Can use a device known as light emitting diodes can also be called LED. Very low voltage and low current can make the LED light.

The LED used the instructions on the box are 5 mm red LED, 1.8 volt, 20 mA. This means that the diameter of 5 mm LED, it requires 1.8 volts and 20 milliamps of current can be slight. In fact, less than 20 milliamps of current can make a little light-emitting LED. Our lemon battery has enough voltage, but current is not sufficient. We must find ways to observe the faint light. We will film in the shell to cut the outside light.

The use of nails, be careful in the film about half of the outer envelope of the two small holes where the top. Allows an adult to help you achieve this step.

Then a small hole marked “+” another labeled “-.”

PIN LED will be folded into a smooth curve outward. Then, to observe carefully closing LEDs. It is mostly round. However, if it is placed at a specific point of view, you will see a pin near a flat surface. From this plane, the last pin is the anode. Pictured from left pin is the negative terminal of LED. You can see the left-most pin in the vicinity of the surface of the small apartment, do?

The negative pin and the LED marked “-” alignment film shell hole. Will run shell pressed film. Thanks to the LED cathode to the pin marked “-” the hole, then make another (positive) pin through the words “+” hole.

Pull The Pin by the holes and departure to ensure they are marked with the slogan. Film also top of the label on the shell. OK LED to us.

We must all be prepared to wait for the last minute. While the film contains a shell LED marked “+” side of the sony VGP-BPS2A battery alignment lemon marked “+” clip. Lemon battery is marked “-” in the film clip to close the envelope marked “-” side.

Now everything is ready! The LED cathode is connected to the lemon battery positive electrode. The LED cathode is connected to the negative terminal of the battery lemon. LED light!

But the hair of the LED light is very dark, because the current battery is too low. Shells film noir that can help you out in dim light. LED end of the play the role of a magnifying glass. When direct observation of the end of the LED, you can easily see the phenomenon of light.

This proves that you really can be used successfully produced a lemon battery! Congratulations!

Troubleshooting

If you can not see the LED light, try the following methods:

1. You may get anti-polarity of the LED, which is positive and negative reversed. First, a livelier place is the oxidation of the metal, it is more lively foil for the anode and the other end, against less active metal anode. Reverse LED and see if it is light.

2. LED light emitted can be very dark. The LED in a darker room, and make the eyes before the experiment to adapt to lower light.

3. Make sure all connections are secure: to ensure that the clip metal parts VGP-BPS9 and screws the connection there is lemon in pieces and screws are solid.

1, the pricing of common sense

Here, we must first note that the load is an important step in the use of rechargeable batteries. Load appropriate and reasonable to extend the battery life is very good, while the random brutal life of the rechargeable Laptop battery will be greatly affected. On one side, said the current lithium batteries are based on the basic package of each product individually and not jointly, if different products to provide their own equipment for loading, and not common, when in service as long as you can use to follow their instructions. While it is the introduction of the battery refers mainly nickel-cadmium batteries and nickel-hydride batteries in metal.

The battery compartment on nickel and nickel hydride batteries, metal, there are two ways in which we are known as “fast charge” and “trickle charge”. Quick charge and trickle charge is the charge of an important concept, and only learned about the fast charge and trickle charge in order to properly grasp the load.

Firstly, the fast charge and trickle charge is a relative concept. Some people have asked, my charger with charge current of 200mA is not load quickly? The answer is not absolute, should have answered some batteries is fast charging, and some batteries, it is simply loaded slow. So how can we judge fast charge or slow charge it?

For example, a 5, Ni-MH power capacity IBM ThinkPad T41 battery of 1200 mAh, while the other section is 1600mAh. We have a battery capacity is called 1B, 1C see is a logical concept, the same 1C, are not equal.

During loading, the load current is less than 0.1C, we called the trickle charge. As its name implies, refers to the current very low. In general, the burden of maintaining the battery can be comprehensive without harming the battery, but the trickle charge to use the time spent far too long, so rarely used alone, but rather, and other pricing methods used in combination.

0.1C, 0.2C charge current between the two, we called the trickle charge. Load current is greater than 0.2C is less than 0.8c is a fast charge. When the load current is greater than 0.8c, we call it super-fast loading.

Precisely because the concept of 1C is a logical rather than absolute values, therefore, according to 1C slow conversion of the fast charge is a charge of relative value. Mentioned in the previous example 200mA charging current for Dell Inspiron 1420 battery 1200mAh fills slowly, but it is for the 700mAH battery fast charge.

Aware of the concept of fast and slow filling, we also need to understand the situation charger can charge the battery properly. Charger on the market can be divided into two types of constant current charger and automatic battery charger

2, constant current charger

Constant current charger is the most common chargers, nickel-cadmium batteries of the time we started to use the charger with constant current. Constant current chargers typically use a load current slow, its use is relatively simple, just put the battery in the battery can be charged storage. Note that the calculation of the charging time must be accurate.

The calculation of the charge time has a simple formula: Hour = 1.5C / load current. For example: on the charger 1200mAH hp Pavilion ZE2000 battery charge current of 150mA, then the time to 1800mAH/150mA equal to 12 hours. Of course, in many cases can not be calculated exactly the time we can choose the nearest half an hour to facilitate the chronograph. For example: charger current 160mA, right 1400mAH battery charging, then time for 2100mAH/160mA about 13 hours, instead of calculating the points.

Construction of a simple constant current charger, labor stability, is a good way to charge little effect on battery life. But it also has its limitations, we must first calculate the time, while nickel-metal hydride batteries with a capacity for growth, the constancy of the time course load required for longer and longer, the use of ’cause a number of drawbacks. Thus, in recent years, rapid charger system is also very popular

3 autoloader and quick

Fast automatic charger in these two years are always better received, he has the speed of loading, security and so on. But there are also some people have doubts about this because of the fast chargers are essentially using current fast charge to charge, the impact of these people will be scared about the life of the sony VGP-BPS5 battery. So the current situation?

Firstly need to be sure that the current charging high impact on the life of the battery is very low, and in many cases, we use fast charge and even ultra-fast load, the current load can sometimes reach 2C or higher. Mainstream is not a killer battery, the real impact on battery life is the heat capacity at high current generated during charging.

We charge the battery when using the nominal voltage above the battery voltage to make, but the battery itself, the load current produces a back EMF, it is part of the current to compensate the the back-EMF and in vain for power and transformed into heat. When the load current is larger, more electrical energy is converted into heat, charging the higher temperature. Too high a temperature on rechargeable batteries is harmful, and a slow charger with constant current, because it is slow charging, the heat generated within the control box, so no need to take special measures. But in the ADF rapidly using a fast charge current will generate high temperatures. Therefore, currently available rapid charger automatically have adopted various methods to reduce the load when the temperature, typically using the cosine law is not a constant current load, but it has intensity current wave of cosines The changes that will reduce heat buildup, thus controlling the temperature within a certain range. Since this type of charger is no longer using the constant load current, charger current is constant in the past, a clear distinction between

To use the quick charger Another problem is that when the charging time is counted if you forget to stop after charging damage the toshiba PA3284U-1BRS battery charger to be much larger than the current slow constant overload resulting damage. Therefore, to solve the problem of overload, voltage fast charger is generally used as the France and other methods to determine the slope to determine if the battery is nearly full, these chargers are used to control the circuit, or IC chip to perform this task. When the battery is almost full, the control circuit will automatically slow charge mode, trickle charge the battery. Used trickle charge current of the battery on the advantages are obvious, the one mentioned above, can trickle charge the battery charge very complete, followed by anxiety billing question, if the maximum use of chargers such advantage n is not obliged to go computing time. The specific use to consult the manual for instructions specific to avoid improper operation.

It is a branch of the fast charger is ultra-fast charger, line battery charger applications of these small, design, structure and processes are very complex, so the prices are quite expensive.

On special occasions, people need in a time short of a good rechargeable apple M8403 battery, which requires the use of ultra-high speed charger. As the ultra-fast charger requires a lot of load current, and some have even used the 2C-3C load current, the heating problem is particularly serious, just by using the cosine wave accusation is not enough, both of these chargers adopted a cosine wave in the post – Insert a landfill very short this approach. This approach can reduce the back-EMF due to the consumption charge current generated by the accumulation of heat, so an additional control of temperature.

4, discharge

Were introduced to a memory effect of rechargeable batteries, we also know that when the memory effect gradually accumulated, would be the actual use of the battery capacity has dropped significantly. To reduce the memory effect caused by the negative role of an effective discharge. In general, nickel-cadmium batteries because of the memory effect most obvious, it is recommended to use 5-10 times after repeated charge for a discharge, while nickel-metal hydride memory effect of batteries must be better, you can charge made after the use of 20-30 times per discharge.

On the market a number of high-end loader to carry out their functions, but the vast majority of feeder medium and low Aspire 3000 battery is impossible to perform functions, then how can we do? To understand the principles of the landfill, we can also try to have the battery discharge.

We already know that nickel-cadmium batteries and nickel-metal hydride battery nominal voltage is 1.2V, but in fact, the battery voltage is a change of values, the adequacy of electricity around the volatility of 1.2 V or more. Generally fluctuated between 1V-1.4V, different brands of batteries vary in regularity, the fluctuation of voltage is not fully consistent with

Discharge the battery is to use a low current discharge, the battery voltage falls slowly to 0.9V-1V between the discharge should stop. Not recommended under the discharge of the battery of 0.9V, it will cause excessive discharge, the battery is not irreversible damage, said on a rechargeable battery is not suitable for use in appliances to the remote, because the use of the remote being very low for a long period of the remote is easy to use cause an excessive discharge. Following a performance of the VGP-BPS9A/B battery, you’ll be pleasantly surprised to find the battery capacity has recovered its original level, so when the battery capacity has been found to decline, it is preferable to a landfill.

His discharge the battery so there is easy way to make a small bead like electric charge, but you must use the meter to monitor voltage changes, to avoid excessive discharge.

For the shipper to choose the shipper to choose fast or slow charger with constant current, which depends mainly on the orientation of their own use. Such as the frequent use of digital cameras and other equipment from a friend, you should choose a quick charger, to meet time requirements, and even ultra-fast charger, you can buy, but only the use of portable devices listening as a friend, a constant current charger will be able to meet the needs of

In controlling the correct charge and knowledge of the landfill, everything will be better able to use their own rechargeable batteries. Please do not adhere rigidly to a fast charge.