基于RbGeI_(3)全无机钙钛矿太阳电池的数值分析  

Numerical analysis of all-inorganic perovskite solar cells based on RbGeI_(3)

作　　者：胡伟霞 杨记鑫 HU Weixia;YANG Jixin(The Engineering&Technical College of Chengdu University of Technology,Leshan Sichuan 614000,China;Southwesten Institute of Physics for Nuclear Industry,Chengdu Sichuan 610225,China)

机构地区：[1]成都理工大学工程技术学院,四川乐山614000 [2]核工业西南物理研究院,四川成都610225

出　　处：《电源技术》2024年第11期2309-2314,共6页Chinese Journal of Power Sources

基　　金：乐山市科技计划项目(21GZD027);成都理工大学工程技术学院基金(C122022018)。

摘　　要：为了开发高效稳定的新型太阳电池,采用SCAPS-1D软件,对以RbGeI_(3)为吸收层的全无机无铅钙钛矿太阳电池进行数值模拟,其电池结构为FTO/TiO_(2)/RbGeI_(3)/Spiro-OMeTAD/Au。影响电池性能的因素包括RbGeI_(3)吸收层厚度及缺陷态密度、掺杂浓度和金属背电极的功函数。通过数值模拟对这些参数进行了优化,提高了电池性能。结果表明:当RbGeI_(3)吸收层厚度为600 nm,缺陷态密度为1013 cm^(-3),RbGeI_(3)吸收层掺杂浓度为1017 cm^(-3),TiO_(2)和Spiro-OMeTAD掺杂浓度分别为1020和1017 cm^(-3)时,电池效率趋于稳定。基于以上参数,优化后的电池输出特性为:V_(oc)=0.92 V,J_(sc)=32.97 mA/cm^(2),FF=78.10%,hPCE=23.65%。研究表明RbGeI_(3)钙钛矿太阳电池具有成为新型高效光伏器件的潜力。In order to develop efficient and stable new solar cells,SCAPS-1D software is used to numerically simulate all-inorganic lead-free perovskite solar cell with RbGeI_(3)as the absorption layer.The cell structure is FTO/TiO_(2)/RbGeI_(3)/Spiro-OMeTAD/Au.The factors that affect device performance include the thickness of the RbGeI_(3)absorption layer and the density of defect states,doping concentration,and the work function of the metal back electrode.This article optimized these parameters through numerical simulation to improve battery performance.The results show that when the thickness of the RbGeI_(3)absorption layer is 600 nm,the density of defect states is 1013 cm^(-3),the doping concentration of the RbGeI_(3)absorption layer is 1017 cm^(-3),and the doping concentrations of TiO_(2)and Spiro-OMeTAD are 1020 cm^(-3)and 1017 cm^(-3),respectively,the efficiency of the device tends to stabilize.Based on the above parameters,the optimized battery output characteristics are V_(oc)=0.92 V,J_(sc)=32.97 mA/cm^(2),FF=78.10%,hPCE=23.65%.This study indicates that RbGeI_(3)perovskite solar cells have the potential to become new and efficient photovoltaic devices.

关 键 词：钙钛矿太阳电池 能级分布 厚度 缺陷态密度 掺杂浓度 数值仿真 

分 类 号：TM914[电气工程—电力电子与电力传动]