In the family of solar cells, polymer solar cells that can be prepared in solution have become renewable energy sources in recent years due to their unique advantages such as low cost, light weight, good flexibility, adjustable color, and easy preparation of large-area, semi-transparent battery panels, etc. Research hotspots. In 1992, Prof. Alan J. Heeger discovered the existence of ultrafast charge transfer between conjugated polymers and fullerenes, and in 1995 achieved the preparation of polymer/fullerene derivatives of PCBM bulk heterojunction solar energy from solution. battery. Since then, in the past more than 20 years, people have successively designed and synthesized light-absorbing materials for conjugated polymers, the working mechanism of the devices, the regulation of the active layer morphology and the electron-acceptor phase separation behavior, and the influence of the interfacial layer. A lot of research has been done in the area of ​​cost device processes and many breakthroughs have been made, which have led to an increase in the efficiency of polymer solar cells to around 11%. A timely review of the past 20 years will help further advance the development of this area and promote the industrialization of large-area printed polymer solar panels. Recently, a review article by Professor Zhang Fengling and Professor Olle Inganes of Linkping University, Sweden, Prof. Zhou Yinhua of Huazhong University of Science and Technology, and Prof. Koen Vandeval of the Dresden University of Technology (Germany) jointly published "Polymer/Fullerene Solar Energy. The research progress of the battery has been published in the 2nd issue of National Science Review 2016. This review mainly reviewed the understanding and development of polymer materials in the active layer of polymer solar cells from wide bandgap to narrow bandgap materials; synchronous development of device technology, including active layer morphology, interface work function control, and non-vacuum process preparation The realization of the battery; gradual understanding of the working mechanism of the device, including the effect of charge transfer (CT) state, carrier mobility, etc. on the open circuit voltage, short-circuit current and fill factor, etc., and materials and devices for future polymer solar cells Suggestions and prospects in terms of structure, process and integration applications. It is worth mentioning that the four authors of this review did pioneering research in polymer solar cell materials, device processes and device physics, and their work has made eye-catching for the development of polymer solar cells. Contributions. In 2014 and 2015, Prof. Zhang Fengling and Prof. Inganes were selected as "Highly Cited Scientists" in materials science at Thomson Reuters for two consecutive years. Prof. Zhou Yinhua has done a lot of research on low-function interface modification and polymer electrodes. He pioneered the introduction of polyethyleneimine and derivatives (PEI and PEIE) to modify various electrodes to improve the efficiency of organic optoelectronic devices (Science, 2012, 336 , 327). At present, the interface material has become a key factor to improve the performance of polymer solar cells and is widely used in polymer solar cells and other optoelectronic devices. Prof. Vandewal has made pioneering work in device physics. His relationship and theory of charge transfer states and open circuit voltages have been widely adopted and applied to the analysis of solar cell energy loss and further improvement of open circuit voltage and energy conversion efficiency. Cooker Knobs,Gas Stove Knobs,Universal Stove Knobs,Universal Gas Stove Knobs Ningbo Best Channel Import & Export Co., Ltd. , https://www.nbbtc-metal.com