The research and development of high temperature resistance of flexible solar cell conversion efficiency 11. 8%

Solar photovoltaic net news: U. S. researchers at the university of Iowa state created a flexible perovskite solar cells, and its efficiency of 11. 8%, and has strong resistance to high temperature.

scientists use of vapor deposition technology step by step, will lead iodide ( PbI 2) Cesium and bromide ( CsBr) Precursor of thin layer made of the inorganic mixed halide perovskite solar cells. The research team said: & other; This kind of vapor deposition technology is consistent, leave no pollutants, and it has been used in other industries, thus can expand scale for commercial production. ”

the researchers point out that using inorganic compounds ( Such as cesium) Help to make the battery has higher heat resistance. They claim that in 72 hours of X ray diffraction analysis, the battery no show even under 200 degrees Celsius, thermal degradation.

according to scientists, solar energy, the battery has significant thermal stability and 1. 87 electron volts ( eV) The band gap. They further explained that the combination of these two features make the PV devices become the ideal choice for battery application series, the series cells used in the real life environment, solar radiation, high summer temperature over 55 & deg; Module temperature is close to 86 C, silicon & deg; The reality of the environment.

　　“ The study proves that the inorganic perovskite materials and solar cells in the higher temperature and longer time than others reported better thermal stability, photovoltaic (pv) grid, & throughout; Researchers in the ACS applied energy material of paper, the thermal stability, efficiency, vapor deposition inorganic perovskite solar cells 'wrote.

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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, this also reflected from the side, in the project bidding and parity, solar energy, 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 solar energy equipment, the people vote for 200 mw, 190 mw hubei energy group, huaneng power 180 mw