Cross-layer all-interface defect passivation with pre-buried additive toward efficient all-inorganic perovskite solar cells  

作　　者：Qiurui Wang Jingwei Zhu Yuanyuan Zhao Yijie Chang Nini Hao Zhe Xin Qiang Zhang Cong Chen Hao Huang Qunwei Tang 

机构地区：[1]College of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Qingdao,China [2]College of Materials Science and Engineering,Sichuan University,Chengdu,China [3]Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials,School of Resources,Environment and Materials,Guangxi University,Nanning,China [4]Institute of Carbon Neutrality,College of Chemical and Biological Engineering,Shandong University of Science and Technology,Qingdao,China

出　　处：《Carbon Energy》2024年第9期283-291,共9页碳能源（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(62104136,22179051);the National Key Research and Development Program of China(2021YFE0111000);Project of Shandong Province Higher Educational Young Innovative Team(2022KJ218);China Postdoctoral Science Foundation(2023M732104);Qingdao Postdoctoral Funding Program(QDBSH20220201002);Postdoctoral Innovation Project of Shandong Province(SDCX-ZG-202303032).

摘　　要：The buried interface in the perovskite solar cell(PSC)has been regarded as a breakthrough to boost the power conversion efficiency and stability.However,a comprehensive manipulation of the buried interface in terms of the transport layer,buried interlayer,and perovskite layer has been largely overlooked.Herein,we propose the use of a volatile heterocyclic compound called 2-thiopheneacetic acid(TPA)as a pre-buried additive in the buried interface to achieve cross-layer all-interface defect passivation through an in situ bottom-up infiltration diffusion strategy.TPA not only suppresses the serious interfacial nonradiative recombination losses by precisely healing the interfacial and underlying defects but also effectively enhances the quality of perovskite film and releases the residual strain of perovskite film.Owing to this versatility,TPA-tailored CsPbBr3 PSCs deliver a record efficiency of 11.23% with enhanced long-term stability.This breakthrough in manipulating the buried interface using TPA opens new avenues for further improving the performance and reliability of PSC.

关 键 词：buried interfaces charge recombination DEFECT PASSIVATION inorganic perovskite solar cells strain relaxation 

分 类 号：TM914.4[电气工程—电力电子与电力传动]