Light on the impact analysis of polymer solar cells

Source: 2020 - 04 - 11 18:44 hits: time for polymer solar cells abstract: the influence of organic polymer solar cells as the research object, research the influence of illumination device performance of organic solar energy. The results showed that under the condition of continuous lighting, change the performance of the device. After heat treatment, can improve the light transmittance, and under 140 ℃ of organic active layer for heat treatment. Key words: organic solar cells; Conversion efficiency; Light transmittance at present, the organic solar cell is one of the hot research topic in the field of solar cells. Compared with inorganic solar cells, organic solar cell conversion efficiency had the very big enhancement. But in both material and technology, the production cost of organic solar cells is very high. But the unique advantages of organic solar cells has attracted the attention of many researchers. Organic solar cells has good flexibility, light weight, environmental protection, low cost, rich materials, etc. Is the biggest advantage of organic solar cells can be quickly with the right equipment manufacturing. In view of these characteristics, organic solar cells has a broad application prospect. But organic solar cells has a downside: photoelectric efficiency is low, life is short, vulnerable to water and oxygen corrosion, making them unstable. Research teams have shown that a single efficiency of organic solar cells can be as high as 10%. However, in practice, even in the process of industrialization, there are still many problems. The photoelectric conversion efficiency of organic solar cells is different from the inorganic solar cells. Photocurrent depends on the following four aspects: active layer materials absorb photons and generate exciton; Exciton diffusion to the corresponding area; Exciton move freely through the internal electric field is divided into holes and electrons. These holes and electrons are collected the corresponding electrode form a current. Therefore, the absorption of light, the generation of exciton, the separation of exciton and holes and electrons gathered in organic solar cell plays an important role. Research teams are working to improve the photoelectric conversion efficiency of organic solar cells. Light and heat treatment on the properties of organic solar cells. By heat treatment, improve light transmittance and crystallinity of the films, to further improve the photoelectric conversion efficiency of the device.