反式锡基钙钛矿太阳电池性能分析与探讨  

Performance analysis and discussion of trans-tin-based perovskite solar cells

作　　者：饶俊慧 甘永进 覃斌毅[1] 蒋曲博 RAO Junhui;GAN Yongjin;QIN Binyi;JIANG Qubo(School of Physics and Telecommunication Engineering,Yulin Normal University,Yulin Guangxi 537000,China;Optoelectronic Information Research Center,Yulin Normal University,Yulin Guangxi 537000,China;Guangxi Key Laboratory of Optoelectronic Information Processing,Guilin University of Electronic Technology,Guilin Guangxi 541004,China)

机构地区：[1]玉林师范学院物理与电信工程学院,广西玉林537000 [2]玉林师范学院光电信息研究中心,广西玉林537000 [3]桂林电子科技大学广西光电信息处理重点实验室,广西桂林541004

出　　处：《电源技术》2022年第10期1175-1178,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(52041111);广西光电信息处理重点实验室基金项目(GD21101);广西自然科学基金青年基金项目(2019GXNSFBA245076);广西高校中青年教师科研基础能力提升项目(2022KY0580)。

摘　　要：基于SCAPS-1D,以CH_(3)NH_(3)SnI_(3)为吸收层,以PCBM和NiO分别为电子传输层和空穴传输层构建反式无铅钙钛矿太阳电池并进行仿真。仿真结果表明,随着金属背电极功函数逐渐增大,电子传输受到阻碍,电池性能下降;增加界面缺陷态密度,使得复合中心和陷阱增多,导致开路电压减小而影响器件性能。NiO和CH_(3)NH_(3)SnI_(3)间的界面缺陷对电池性能影响更为明显;工作温度升高,电池性能不断下降,因此应尽量避免电池工作温度过高;ITO功函数越大,电池内部传输势垒越小,促进空穴运输,使得界面复合减弱,电池输出较佳性能。A trans-lead-free perovskite solar cell was constructed based on SCAPS-1D with CH_(3)NH_(3)SnI_(3) as the absorber layer,PCBM and NiO as the electron transport layer and the hole transport layer,respectively.Simulation results show that as the work function of the metal back electrode increases,the electron transport is hindered and the cell performance decreases.Increasing the interfacial defect density increases recombination centers and traps,which results in a decrease in open circuit voltage and device performance.The interface defect between NiO and CH_(3)NH_(3)SnI_(3) has a more obvious effect on the cell performance.As the working temperature increases,the cell performance continues to decline,so the working temperature should not be too high.As the ITO work function is larger,the internal transport barrier of the cell is smaller,which promotes hole transport and weakens the interface recombination.

关 键 词：电子传输层 空穴传输层 钙钛矿太阳电池 功函数 缺陷态密度 

分 类 号：TM914.4[电气工程—电力电子与电力传动]