Graphdiyne oxide doping for aggregation control of hole-transportnanolayer in inverted perovskite solar cells  

作　　者：Xu Cai Jin Tang Min Zhao Le Liu Zhibin Yu Jiajia Du Ling Bai Fushen Lu Tonggang Jiu Yuliang Li 

机构地区：[1]Science Center for Material Creation and Energy Conversion,Institute of Frontier and Interdisciplinary Science&School of Chemistry and Chemical Engineering,Shandong University,Qingdao 266237,China [2]Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province,Shantou University,Shantou 515063,China [3]Beijing National Laboratory for Molecular Sciences(BNLMS),Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Nano Research》2022年第11期9734-9740,共7页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.21975273);Scientific Research Starting Foundation of Outstanding Young Scholar of Shandong University,and the Fundamental Research Funds of Shandong University;We thank Guangdong Basic and Applied Basic Research Foundation(No.2019A1515012156);2020 Li Ka Shing Foundation Cross Disciplinary Research Grant(No.2020LKSFG01A);Department of Education of Guangdong Province(Nos.2021LSYS009 and 2021KCXTD032).

摘　　要：The strong aggregation tendency of hole transport material poly[3-(4-carboxylbutyl)thiophene-K(P3CT-K)restricts its further application in inverted perovskite solar cells(PSCs).Here,we report an effective strategy to address this issue and achieve the superior performance of inverted methylammonium lead triiodide(MAPbI3)PSCs,in which graphdiyne oxide(GDYO)doped P3CT-K nanocomposites are applied as the hole transport nanolayer(HTL).It is revealed that the strongπ–πstacking interaction occurs between GDYO and P3CT-K,which is proved by the blue shift of the absorption peak of P3CT-K nanolayer.The aggregation control via GDYO contributes to the property improvement of P3CT-K HTL.Moreover,the homogeneous coverage induces the growth of perovskite grain with larger size than that based on the undoped one.As a result,the optimized surface morphology,enhanced conductivity,charge extraction as well as better crystal quality,finally improve the device performance.An optimal power conversion efficiency of 19.06%is achieved,with simultaneously improved fill factor and short circuit current density.This work presents the potential of functional graphdiyne(GDY)in the development of highly efficient photovoltaic device.

关 键 词：graphdiyne oxide perovskite solar cells hole transport layer aggregation control carriers transfer 

分 类 号：O61[理学—无机化学]