Cu_(x)O用于调控全无机碳基CsPbI_(2)Br钙钛矿太阳能电池的界面性能  

Improved interface performance of all inorganic carbon based CsPbI2Br perovskite solar cells using Cu_(x)O

作　　者：孙北 郑申申 迟文晖 陈康来 张翔[1] 徐坤宇 陈华梅[1] 谢亚红[1] SUN Bei;ZHENG Shenshen;CHI Wenhui;CHEN Kanglai;ZHANG Xiang;XU Kunyu;CHEN Huamei;XIE Yahong(Key Laboratory of Oil&Gas Fine Chemicals,Ministry of Education and Xinjiang Uyghur Autonomous Region,College of Chemical Engineering,Xinjiang University,Xinjiang 830046,China;School of New Energy and Materials,Southwest Petroleum University,Chengdu 610599,China)

机构地区：[1]新疆大学化工学院,石油天然气精细化工教育部/自治区重点实验室,乌鲁木齐830046 [2]西南石油大学新能源与材料学院,成都610599

出　　处：《复合材料学报》2023年第5期2818-2826,共9页Acta Materiae Compositae Sinica

基　　金：新疆大学2021年自治区级大学生创新训练计划项目(20191003209);国家自然科学基金(52162035)。

摘　　要：基于CsPbI_(2)Br的全无机碳基钙钛矿太阳能电池由于碳电极与钙钛矿层间接触性能较差和能带不匹配等问题,导致其光电转化效率较低。本文采用简单的葡萄糖还原法结合煅烧技术制备了两种不同形貌和结构的规则八面体构型Cu_(x)O,将之作为无机空穴传输材料,制备了结构为导电玻璃(FTO)/SnO_(2)/CsPbI_(2)Br/Cu_(x)O/C的碳基钙钛矿太阳能电池,研究了Cu_(O)和Cu_(2)O的形貌、结构对光电性能的影响机制。结果显示:Cu_(O)和Cu_(2)O皆具有良好的化学稳定性和p型载流子传输特性,可有效增强CsPbI_(2)Br钙钛矿层与碳电极层之间的界面接触,改善载流子传输性能,减少电荷复合,延长光电子寿命。基于Cu_(2)O和Cu_(O)的CsPbI_(2)Br基碳基钙钛矿太阳能电池(C-PSC)器件的光电转换效率最高分别为11.62%和13.22%,分别比空白对照器件的光电转化效率提高了19.5%和36.0%。此外,通过添加Cu_(2)O和Cu_(O),器件在空气中的长期稳定性也得到明显改善,该工作为提高碳基CsPbI_(2)Br钙钛矿太阳能电池的光电性能提供了一种简单有效的方法。All inorganic carbon-based CsPbI_(2)Br perovskite solar cells(C-PSCs)have lower photoelectric conversion efficiency due to poor contact performance and mismatch of energy band between carbon electrode and perovskite laye.In this paper,two kinds of regular octahedral Cu_(x)O with different morphologies and structures were prepared by a simple glucose reduction method combined with calcination technology.As inorganic hole transport materials,C-PSCs with the structure of conductive glass(FTO)/SnO_(2)/CsPbI_(2)Br/Cu_(O)/C were prepared and the influence of morphologies and structures on the photoelectric performance was studied.The results show that Cu_(x)O has good chemical stability and p-type carrier transport characteristics,which can effectively enhance the interface contact between CsPbI_(2)Br and carbon electrode,improve the carrier transport performance,reduce charge recombination,and extend the photoelectron life.The highest photoelectric conversion efficiency of CsPbI_(2)Br based C-PSCs devices based on Cu_(2)O and Cu_(O)is 11.62%and 13.22%,respectively,which is 19.5%and 36.0%higher than that of blank devices.In addition,by adding Cu_(2)O and Cu_(O),the long-term stability of the device in the air is also significantly improved.This work has a certain significance for improving the performance of CsPbI_(2)Br based C-PSCs.

关 键 词：无机钙钛矿太阳能电池 Cu_(x)O CsPbI_(2)Br 转化效率 无机空穴传输材料 

分 类 号：TB332[一般工业技术—材料科学与工程]