Organic solar cell detection method based on B2912A

Awdur: Iflowpower - Mofani oa Seteishene sa Motlakase se nkehang

With the increasingness of energy and environmental problems, the development of various cleaning energy is increasingly valued, in which solar use is one of the most important ways to handle energy shortages and environmental pollution, and solar cells are solar utilization. A very important aspect. Solar cells in the current use and development, crystal silicon (single crystal silicon, polysilicon, single crystal silicon) solar cell, inorganic semiconductor film (amorphous silicon, CDTE, GaAs, Cuinse2, etc.

) solar cell, organic dye sensization solar cell And organic solar cells, etc. At present, the commercial battery in the market is based on solar cell based on inorganic materials, but there is a high cost, high-energy preparation and purification process, and complex battery preparation process. Organic solar cells are a new organic thin film solar cell that can be considered as third-generation batteries, typical organic solar cells consisting of conjugated polymers or organic small molecular donors and fullerene derivatives.

Composed between translucent ITO conductive glass positive and metal negative electrodes. Its structure is shown in Figure 1, 2. The organic solar cell has a simple preparation process, low cost, light weight, and can have flexible devices.

At present, the maximum photoelectric conversion efficiency of small-area devices reported in the laboratory has increased from less than 1% in 1995 to greater than 9%. A few days ago, many companies have actively carried out industrialization of organic solar cells. The battery efficiency of industry reports has exceeded 10% (Japan Mitsubishi Chemistry and the United States California University of Science and Technology cooperation), and has begun to industrialize the Heliatek company reported battery.

Efficiency is also up to 10.7%. The working principle of organic solar cells and solar cells based on inorganic materials are similar, solar light is incident on the active layer from the translucent electrode side, and the active layer photovoltaic material absorbs the photon appearance exciton (electron-hole pair); exciton / Diffusion and migration under the receptor boundary; the exciton of diffusion and migration to the interface occurs at a charged / receptor electron energy level; under the use of the internal potential field of the battery, the separated hole is given along The passage formed by the body is transmitted to the positive electrode, and the electrons are transmitted to the negative electrode along the channel formed by the PCBM receptor; holes and electrons are collected by the positive electrodes and the negative electrical voltage, thereby presenting photovoltaic effects.

The most important parameters of the performance of organic solar cells include: photovoltaicconvertefficiency, PCE, open-circuit voltage (OpenCIRCUITVOLTAGE, VOC), shortcircuitcurrent, JSC, FillFactor, FF). The calculation formula of the battery conversion efficiency is: as an alternative energy source, the most important data of the solar cell is the utilization efficiency of energy, that is, the conversion efficiency of the solar cell to the incident. The organic solar battery prepared by the laboratory is in part, and the metal gate electrode (small area battery electrode is often six fingers).

Due to the organic solar cell compared to traditional inorganic-based batteries, the current parameters are not as good as, so it is higher for the accuracy of the detection. Of course, other simple, fast probes are also required. In addition to the accurate conversion efficiency, accurate measurement data can also get VMAX, JMAX, PMAX, and RSH, RS and other values, which can accurately investigate all aspects of the battery, and improve the supply of battery performance for the next battery performance According to the test.

The laboratory to the organic solar battery performance detection source is the use of Agilent B2912A, using a USB interface. The minimum measurement discrimination rate of minimal to 10FA / 100 nV can meet the detection of aerobic solar cells, especially in the exploration of dark currents. Figure 4 is an organic solar cell to detect the connection diagram using the B2912A detection of the B2912A, which can meet the requirements of data transmission, and the detection of the battery and the source table straight and can be separated.

Interference with other instruments in the room. Fig. 5 is a graph showing the I-V graph of the B2912A under a standard sun and no shield under a standard sun and a non-light-free condition based on P3HT and PCBM.

It can be seen that the source table can meet the high precision of the detection data, while setting different delay times to meet the slower requirements of the organic solar cell detection signal feedback. Figure 5: I-V curve under the I-V curved and no lighting conditions at 1000 W / M2 light in the 1000 W / m2 light intensity based on P3HT and PCBM-based organic solar cells detected by B2912A. During the research of organic solar cells, IV detection on a large number of battery packs.

Compared to the traditional IV detection system, the IV detection system integrated with the B2912A precision measurement unit has the advantages of simple system structure, convenient operation, high precision, and rapid measurement, greatly reduces the operating costs of solar cell IV performance measurement. Cost, the flexibility of IV measurement. The B2912A can also detect an organic LED, an organic MOSFET device, and can save a long-term equipment investment in a laboratory.

Long-term views, solar use is inevitably a very important way to deal with energy and environmental issues. On the other hand, with the continuous development of new technologies, the use of solar cells will also be broader, in which organic solar batteries will have to play a considerable role due to their magical advantages. In recent years, as a large number of researchers and quite companies have begun to study the development of organic solar cells, their development speed is quite rapid, and the battery efficiency has also improved significantly.

This also puts forward new requirements for organic solar cell detection, and of course new opportunities. Taking our laboratory as an example, Agilent B2912A can meet the requirements of performance detection of organic solar cells.