2D materials for conducting holes from grain boundaries in perovskite solar cells

作     者：Peng You Guanqi Tang Jiupeng Cao Dong Shen Tsz-Wai Ng Zafer Hawash Naixiang Wang Chun-Ki Liu Wei Lu Qidong Tai Yabing Qi Chun-Sing Lee Feng Yan Peng You;Guanqi Tang;Jiupeng Cao;Dong Shen;Tsz-Wai Ng;Zafer Hawash;Naixiang Wang;Chun-Ki Liu;Wei Lu;Qidong Tai;Yabing Qi;Chun-Sing Lee;Feng Yan

作者机构：Departm ent of Applied PhysicsThe Hong Kong Polytechnic UniversityHung HornKowloonHong KongChina College of New Materials and New EnergiesShenzhen Technology University518118 ShenzhenChina Center of Super-Diamond and Advanced Films(COSDAF)Department of ChemistryCity University of Hong KongHong KongChina Energy Materials and Surface Sciences Unit(EMSSU)Okinawa Institute of Science and Technology Graduate University(OIST)1919-1 TanchaOnna-sonOkinawa 904-0495Japan University Research Facility in Materials Characterization and Device FabricationThe Hong Kong Polytechnic UniversityHung HornKowloonHong KongChina 

出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)

年 卷 期：2021年第10卷第4期

页      面：695-706页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：the Research Grants Council of the Hong Kong Special Administrative Region China(Grant No.PolyU 152087/17E).Z.H.and Y.B.Q.acknowledge the funding support from the Energy Materials and Surface Sciences Unit of the Okinawa Institute of Science and Technology Graduate University the OIST Proof of Concept(POQ Programme the OIST R&D Cluster Research Programme and the JSPS KAKENHI(Grant Number JP18K05266) 

主　　题：materials. process. perovskite 

摘      要：Grain boundaries in organic-inorganic halide perovskite solar cells(PSCs)have been found to be detrimental to the photovoltaic performance of ***,we develop a unique approach to overcome this problem by modifying the edges of perovskite grain boundaries with flakes of high-mobility two-dimensional(2D)materials via a convenient solution process.A synergistic effect between the 2D flakes and perovskite grain boundaries is observed for the first time,which can significantly enhance the performance of *** find that the 2D flakes can conduct holes from the grain boundaries to the hole transport layers in PSCs,thereby making hole channels in the grain boundaries of the ***,2D flakes with high carrier mobilities and short distances to grain boundaries can induce a more pronounced performance enhancement of the *** work presents a cost-effective strategy for improving the performance of PSCs by using high-mobility 2D materials.