Antioxidant induced bulk passivation for efficient and stable hole transport layer-free carbon electrode perovskite solar cells

查看全文 作　　者：Yetai [1]Cheng;Qingbo [1]Wei;Nannan [1]Wang;Zhangwen [1]Ye;Yanbin [1]Zhao;Qiongyao [1]Wang;Depeng [2]Chu;Lingxing [1]Zan;Feng [1]Fu;Yucheng [2]Liu 机构地区：[1]Key Laboratory of Chemical Reaction Engineering of Shaanxi Province,College of Chemistry&Chemical Engineering,Yan’an University,Yan’an 716000,China;[2]Shaanxi Key Laboratory for Advanced Energy Devices,Shaanxi Engineering Lab for Advanced Energy Technology,Institute for Advanced Energy Materials,School of Materials Science and Engineering,Shaanxi Normal University,Xi’an 710062,China 出　　处：《Chinese Chemical Letters》索引2023年第34卷第6期,共6页 基　　金：the financial support from the National Natural Science Foundation of China(Nos.22169022,22162026 and 62104137);the Shaanxi Technical Innovation Guidance Project of China(No.2018HJCG-17);the China National Postdoctoral Program for Innovative Talents(No.BX2021173);the China Postdoctoral Science Foundation(No.2021M702058)。 摘　　要：Defect passivation is one of the important strategies to improve the efficiency and stability of perovskite solar cells.In this work,2,6-di-tert-butyl-4-methylphenol(BHT)as antioxidant was introduced into the perovskite precursor solution to improve the quality of the prepared perovskite films,so that these films performed a larger and uniform grain size.Moreover,the-OH functional group in BHT interacts with I-,thus reducing the density of defect states and inhibiting the non-radiative recombination.The presence of hydrophobic groups in BHT protects the film from moisture erosion and improves the long-term stability of PSCs devices.The maximum photoelectric conversion efficiency of the constructed ITO/SnO_(2)/BHTMAPbI_(3)/Carbon device is 16.88%,and the unpackaged cell maintains the initial efficiency of 99.3%after698 h of storage under the environmental condition of 30%humidity.This work provides an efficient approach to improve the performance of printable hole transport layer-free carbon electrode perovskite solar cells. 关 键 词：Perovskite solar cells Additive engineering Defect passivation Long-term stability Carbon electrode