电子回流阻挡层提升钙钛矿太阳能电池的光电性能

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中图分类号： TM914.4；TN305.2 文献标志码：A 文章编号： 1000-5013（2025）06-0666-09

Abstract：Using the spin-coating method，1-amantadine hydrochloride（ADA）was introduced as an interface modifier between tin dioxide （ SnO2 ）and perovskite layers to form an electron reflow barrier layer，which served to passivate interface defects，prevent electron reflow，and suppress non-radiative recombination at the interface，and could also enhance the photoelectric performance of perovskite solar cells. The results showed that the amino lone pair electrons in ADA could coordinate with uncoordinated Pb2+ ，which was conducive to the formation of high-quality perovskite films，reducing defect density and increasing open-circuit voltage.The optimal power conversion efficiency （PCE） of the perovskite solar cells modified by ADA reached 23.07% ，the open-circuit voltage was 1.13V ，the short-circuit current density was 24.67mA⋅cm-2 ，and the fill factor was 82.59% . After being stored in an air environment for 1 000h ，the modified device still maintained a PCE of over 85% ， and both efficiency and stability were significantly enhanced.

Keywords：perovskite solar cells;； interface engineering；defect passivation； electron reflux

钙钛矿太阳能电池（PSCs）凭借其光活性材料的优异可加工性和光电性能，被视为极具潜力的光伏技术之一[1]。（剩余13441字）