Nature Energy publishes WUT’s latest research findings on perovskite solar cells
Update Time:2021-06-15 17:04:56

Recently,Nature Energy,an international top-ranking journalin the field ofenergy,publishestheimportantfindings of WUT’sperovskite solar cell research team. The paper is entitledThe critical role of composition-dependent intragrain planar defects in the performance of MA1-xFAxPbI3 perovskite solar cellswithLi Wei, a researcher from the State Key Laboratory of Advanced Technology For Materials Synthesis and Processing(WUT), being the first author .

Researches on perovskite solar cells have made great breakthroughs. Compared with traditional silicon solar cells, perovskite solar cells have abundant raw materials, simple preparation process, low production cost, and low energy consumption. Its highest certified efficiency has reached 25.5%, approaching the photoelectric conversion efficiency of monocrystalline silicon solar cell of 26.7%, which has attracted widespread attention from the global photovoltaic industry.

However, organic-inorganic hybrid perovskite materials also face the problem of easy migration of constituent ions and poor long-term stability, whichhave become the main reasonsfor restricting itslarge-scalecommercial application. After an in-depth researchfor more than 6 years, the perovskite solar cell research team of WUThas proved experimentally for the first time in the worldthat the surface defect in organic-inorganic-hybrid perovskite materialsplays a vital role in the photoelectric conversion performance of solar cells through ultra-low-dose transmission electron microscopy. The research is vital forestablishingthebridge between the microstructure defects of photovoltaic materials and the macroscopic performance of solar cells, which can effectively improve the efficiency and stability of perovskite solar cells through precise control of the internal defects of perovskite crystals. This will greatly promote the industrial process of perovskite solar cells, help further reduce the cost of power generationfrom solar cells, and promoteChinas early realization of the goal of carbon neutrality.

Li Wei, who studied at the University of New South Wales and Monash University in Australia for PhD and post-doctoral researchfrom 2009 to 2018, joined the State Key Laboratory of Advanced Technology For Materials Synthesis and Processingof Wuhan University of Technologyin September 2018. In 2021, he was selected asthe member of National High-level Talents(Youth Project). Hismain research focuses arethe mechanism of the microstructure defects of new optoelectronic materials on the performance of the deviceand the industrialization technology of perovskite solar cells and perovskite/silicon tandem solar cells.

Written by: Xiong Yuanlu

Rewritten by: Ma Yan

Edited by: Luo Xiaohan, Li Tiantian

Source: Instituteof New Materials