Enhanced Photovoltage for Inverted Perovskite Solar Cells Using Delafossite CuCrO_(2) Hole Transport Material  

铜铁矿CuCrO_(2)空穴传输材料增强反式钙钛矿太阳能电池的光电压

作　　者：Xue-yan Shan Bin Tong Shi-mao Wang Xiao Zhao Wei-wei Dong Gang Meng Zan-hong Deng Jing-zhen Shao Ru-hua Tao Xiao-dong Fang 单雪燕;童彬;王时茂;赵啸;董伟伟;孟钢;邓赞红;邵景珍;陶汝华;方晓东(中国科学院合肥物质科学研究院安徽光学精密机械研究所,光伏与节能材料重点实验室,安徽省光子器件与材料重点实验室,合肥230031;中国科学技术大学,合肥230026;先进激光技术安徽省实验室,合肥230037;深圳技术大学新材料与新能源学院,深圳518118;安徽建筑大学材料与化工学院,合肥230601;中国科学技术大学环境与光电子技术学院,合肥230026)

机构地区：[1]Anhui Provincial Key Laboratory of Photonic Devices and Materials,Anhui Institute of Optics and Fine Mechanics,Key Lab of Photovoltaic and Energy Conservation Materials,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China [2]University of Science and Technology of China,Hefei 230026,China [3]Advanced Laser Technology Laboratory of Anhui Province,Hefei 230037,China [4]College of New Materials and New Energies,Shenzhen Technology University,Shenzhen 518118,China [5]School of Materials and Chemical Engineering,Anhui Jianzhu University,Hefei 230601,China [6]School of Environmental Science and Optoelectronic Technology,University of Science and Technology of China,Hefei 230026,China

出　　处：《Chinese Journal of Chemical Physics》2022年第6期957-964,I0064-I0071,I0074,共17页化学物理学报（英文）

基　　金：jointly supported by the National Natural Science Foundation of China(No.62075223 and No.11674324);CAS Pioneer Hundred Talents Program of Chinese Academy of Sciences;CAS-JSPS Joint Research Projects(GJHZ1891);Director Fund of Advanced Laser Technology Laboratory of Anhui Province(AHL2020ZR02);Key Lab of Photovoltaic and Energy Conservation Materials of Chinese Academy of Sciences(PECL2019QN005 and PECL2018QN001);the Natural Science Foundation of Top Talent of Shenzhen Technology University(No.2020101);Natural Science Research Project of Higher School of Anhui Province(KJ2020A0477);Initial Scientific Research Fund of Anhui Jianzhu University(No.2018QD60)。

摘　　要：Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)has been widely adopted as hole transport material(HTM)in inverted perovskite solar cells(PSCs),due to high optical transparency,good mechanical flexibility,and high thermal stability;however,its acidity and hygroscopicity inevitably hamper the long-term stability of the PSCs and its energy level does not match well with perovskite materials with a relatively low open-circuit voltage.In this work,p-type delafossite CuCrO_(2)nanoparticles synthesized through hydrothermal method was employed as an alternative HTM for triple cation perovskite[(FAPbI_(3))_(0.87)(MAPbBr_(3))_(0.13)]_(0.92)(CsPbI_(3))_(0.08)(possessing better photovoltaic performance and stability than conventional CH3NH3PbI3)based inverted PSCs.The average open-circuit voltage of PSCs increases from 908 mV of the devices with PEDOT:PSS HTM to 1020 m V of the devices with CuCrO_(2)HTM.Ultraviolet photoemission spectroscopy demonstrates the energy band alignment between CuCrO_(2)and perovskite is better than that between PEDOT:PSS and perovskite,the electrochemical impedance spectroscopy indicates CuCrO_(2)-based PSCs exhibit larger recombination resistance and longer charge carrier lifetime than PEDOT:PSS-based PSCs,which contributes to the high VOCof CuCrO_(2)HTM-based PSCs.

关 键 词：Perovskite solar cell Inverted architecture Hole transport material CuCrO_(2) Open-circuit voltage 

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