Copper naphthalocyanine-based hole-transport material for highperformance and thermally stable perovskite solar cells  

作　　者：Yue Qiang Huaiman Cao Yuzhen Pan Yi Chi Liangyu Zhao Yingguo Yang Hai-Bei Li Yan Gao Licheng Sun Ze Yu 

机构地区：[1]State Key Laboratory of Fine Chemicals,Frontier Science Center for Smart Materials,Dalian University of Technology(DUT).Dalian 116024,China [2]School of Chemistry,Dalian University of Technology(DUT),Dalian 116024,China [3]School of Microelectronics,Fudan University,Shanghai 200433,China [4]Shanghai Synchrotron Radiation Facility(SSRF),Zhangjiang Lab,Shanghai Advanced Research Institute,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [5]School of Ocean,Shandong University,Weihai 264209,China [6]Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry,School of Science,Westlake University,Hangzhou 310024,China [7]Department of Chemistry,School of Engineering Sciences in Chemistry,Biotechnology and Health,KTH Royal Institute of Technology Stockholm 10044,Sweden

出　　处：《Science China Chemistry》2024年第8期2701-2709,共9页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (52161145408, 21975038, 22088102);the National Key R&D Program of China (2022YFA0911904);the Fundamental Research Funds for the Central Universities (DUT23LAB611);the Central Guidance for Local Scientific and Technological Development Funds in Liaoning Province (2023JH6/100500006);the Research and Innovation Team Project of Dalian University of Technology(DUT2022TB10)。

摘　　要：Metal phthalocyanines(MPcs) have gained considerable research attention as hole-transport materials(HTMs) in perovskite solar cells(PSCs) because of their superb stability. However, the photovoltaic performance of MPc-based HTMs in PSCs is still lagging behind their small molecule and polymeric counterparts, largely due to their relatively low hole mobility. Here, we report for the first time the application of a copper naphthalocyanine derivative(namely t Bu-Cu Nc) as a hole-transport material(HTM)in perovskite solar cells(PSCs), and systematically study its optoelectronic and photovoltaic property compared with its Cu Pc analog(t Bu-Cu Pc). Combined experiments disclose that the extension of π-conjugation from Pc to Nc core leads to not only an enhanced hole-carrier mobility associated with a stronger intermolecular interaction, but also an elevated glass transition temperature(T_g) of 252 °C. The resultant PSCs employing t Bu-Cu Nc deliver an excellent power conversion efficiency of 24.03%, which is the record efficiency reported for metal complex-based HTMs in PSCs. More importantly, the encapsulated t Bu-Cu Nc-based devices also show dramatically improved thermal stability than the devices using the well-known SpiroOMe TAD, with a T_(80)lifetime for more than 1,000 h under damp-heat stress. This study unfolds a new avenue for developing efficient and stable HTMs in PSCs.

关 键 词：hole-transport materials perovskite solar cells copper naphthalocyanine extendedπ-conjugation thermal stability 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TB34[一般工业技术—材料科学与工程]