Exciting! Perovskite solar cells is expected to be first commercialized in China.

Solar photovoltaic (pv) net news: introduction: China is the largest supplier of photovoltaic modules, has the largest photovoltaic enterprises and researchers. Of photovoltaic (pv) in this booming environment, Shanghai jiaotong university professor Han Li yuan believes that in the wake of the tireless efforts of scientists and industry in China, PSC） Commercial will be the first to implement in China.

perovskite solar cells ( PSC） Due to its high efficiency and low manufacturing cost and has attracted worldwide attention. As the largest supplier of photovoltaic modules, the Chinese have made great efforts in the study of PSC. In 2019, the Chinese team still holds the world % 27 s paper publications. Device efficiency and stability are improved steadily, and gradually promote the commercialization of PSC.

because of this, Shanghai jiaotong university professor Han Li yuan 2019 Chinese PSC research progress are reviewed in this paper, and briefly introduces the development of the industry in PSC module.

　　1） PSC are usually made of perovskite absorber, electron and hole transport layer and the composition of the electrode. These layers in determining the quality of the equipment of PCE plays a vital role. Can therefore, by optimizing the perovskite thin films and interfaces to effectively reduce the energy loss in the PSC and further improve the efficiency of the device. In addition, tandem solar cells is expected to break through the single battery efficiency theory of limit. The author summarizes the titanium in calcium deposits, interface engineering, tandem structure, the research progress of PSC power conversion efficiency.

　　2） Stability is the bottleneck of PSC application. Components through the weak interaction of perovskite ( Such as the ionic bond, hydrogen bond and van der Waals force) , solar power network, so as to improve the inherent quality of soft perovskite materials. In under the irradiation of light and heat, which are prone to ion migration, this will not only damage the other layers, solar equipment, also leaves, such as halogen vacancy defects, which reduces the stability of the device. In addition, external water and oxygen are often through the grain boundary into perovskite, therefore may also affect the stability. The author based on defect passivation and barrier to build two aspects, summarizes the latest progress to improve the stability of PSC.

　　3） So far, efficient PSC usually use based on Pb perovskite as absorption layer. Also studied based on Sn, Ge, Cu and other elements of lead-free PSC. Due to the ideal of band gap close to Shockley - Kratos Selma limit ( 1. 4 eV) And high carrier mobility, perovskite is the most promising candidate. The author briefly summarizes the latest research progress of lead-free PSC.

　　4） Although in academia and industry, China and other countries/regions of PSC carried on the thorough research, solar panels, but to make the PSC competition with silicon solar cells, there is still a long way to go.

in order to further speed up the PSC's research and development, the author gives some Suggestions include: ( 1) Module size and efficiency between the related are the main challenges facing the next; （ 2) Due to stability has become a hot topic of PSC commercial and pressing issue, so should be standardized for stability test; （ 3) Although silicon solar cells have dominated the photovoltaic market and now can see in many applications in daily life, but they were originally designed for niche products, specially designed for highly specialized applications, such as the station, the lighthouse. Also, it is time to look forward to the PSC based prototype.

China is the largest supplier of photovoltaic modules, with the largest photovoltaic enterprises and researchers. In this booming photovoltaic (pv) environment, the authors believe that the tireless efforts of scientists and industry in China, the commercialization of PSC will first realized in China.

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this paper statistics the September to today issued a total of 2. 85 gw pv power plant EPC and 1. 9 gw component bid opening information. Among them, the EPC project owner units is given priority to with soe/state, solar panels, and this is reflected from the side, solar energy, in project bidding and parity, the state-owned enterprises have become the absolute main force. Specifically, CGNPC in development of 410 mw, 603 mw, guangzhou energy saving 220 mw, 345 mw, jin can group the people vote for 200 mw, 190 mw hubei energy group, huaneng power 180 mw