Perovskite Solar Cells(PSCs)have attracted considerable attention because of their unique features and high efficiency.However,the stability of perovskite solar cells remains to be improved.In this study,we modified t...Perovskite Solar Cells(PSCs)have attracted considerable attention because of their unique features and high efficiency.However,the stability of perovskite solar cells remains to be improved.In this study,we modified the TiO_(2)Electron Transport Layer(ETL)interface with PbCl_(2).The efficiency of the perovskite solar cells with carbon electrodes increased from 11.28%to 13.34%,and their stability obviously improved.The addition of PbCl_(2)had no effect on the morphology,crystal structure,and absorption property of the perovskite absorber layer.However,it affected the band energy level alignment of the solar cells and accelerated the electron extraction and transfer at the interface between the perovskite layer and the ETL,thus enhancing the overall photovoltaic performance.The interfacial modification of ETL with PbCl_(2)is a promising way for the potential commercialization of low-cost carbon electrode-based perovskite solar cells.展开更多
With the support by the National Natural Science Foundation of China,the research team led by Prof.Hou Yu(侯宇)and Prof.Yang Huagui(杨化桂)at the Key Laboratory for Ultrafine Materials of Ministry of Education,School ...With the support by the National Natural Science Foundation of China,the research team led by Prof.Hou Yu(侯宇)and Prof.Yang Huagui(杨化桂)at the Key Laboratory for Ultrafine Materials of Ministry of Education,School of Materials Science and Engineering,East China University of Science展开更多
全钙钛矿叠层太阳能电池(all perovskite tandem solar cell,AP-TSC)拥有巨大的潜力可突破单结Shockley-Queisser限制,但高质量空穴传输层(hole transport layer,HTL)和电子传输层(electron transport layer,ETL)的缺失阻碍了叠层电池...全钙钛矿叠层太阳能电池(all perovskite tandem solar cell,AP-TSC)拥有巨大的潜力可突破单结Shockley-Queisser限制,但高质量空穴传输层(hole transport layer,HTL)和电子传输层(electron transport layer,ETL)的缺失阻碍了叠层电池的发展.本文利用TCAD Atlas软件对AP-TSC的四种载流子传输层进行优化设计,即顶部HTL、顶部ETL、底部HTL和底部ETL.结果表明,在聚(3,4-乙烯二氧噻吩)-聚苯乙烯磺酸(poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate),PEDOT:PSS)、2,2',7,7'-四[N,N-二(4-甲氧基苯基)氨基]-9,9'-螺二芴(2,2',7,7'-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene,Spiro-OMETAD)、CuI、CuO、NiO和CuSCN中,NiO是最适合的顶部HTL和底部HTL材料.在C_(60)、SnO_(2)、TiO_(2)、ZnO、[6,6]-苯基-C61-丁酸异甲酯((6,6)-phenyl-C61 butyrie acid methyl ester,PCBM)和CdS中,SnO_(2)和ZnO分别是最合适的顶部ETL和底部ETL材料.此外,钙钛矿厚度对电池效率的影响研究得出,无电流限制下FA_(0.8)Cs_(0.2)Pb(I_(0.7)Br_(0.3))_(3)和MAPb_(0.5)Sn_(0.5)I_(3)的厚度拟合方程为y=0.75x?35.通过材料设计和钙钛矿厚度优化,在异质结界面复合速率为1000 cm/s时,AP-TSC依然实现了32%的效率.展开更多
基金supported by the National Natural Science Foundation of China(Nos.61875186,61975196,and 61674140)Chinese Academy of Sciences(CAS)The World Academy of Sciences(TWAS)(CASTWAS)scholarship。
文摘Perovskite Solar Cells(PSCs)have attracted considerable attention because of their unique features and high efficiency.However,the stability of perovskite solar cells remains to be improved.In this study,we modified the TiO_(2)Electron Transport Layer(ETL)interface with PbCl_(2).The efficiency of the perovskite solar cells with carbon electrodes increased from 11.28%to 13.34%,and their stability obviously improved.The addition of PbCl_(2)had no effect on the morphology,crystal structure,and absorption property of the perovskite absorber layer.However,it affected the band energy level alignment of the solar cells and accelerated the electron extraction and transfer at the interface between the perovskite layer and the ETL,thus enhancing the overall photovoltaic performance.The interfacial modification of ETL with PbCl_(2)is a promising way for the potential commercialization of low-cost carbon electrode-based perovskite solar cells.
文摘With the support by the National Natural Science Foundation of China,the research team led by Prof.Hou Yu(侯宇)and Prof.Yang Huagui(杨化桂)at the Key Laboratory for Ultrafine Materials of Ministry of Education,School of Materials Science and Engineering,East China University of Science
文摘全钙钛矿叠层太阳能电池(all perovskite tandem solar cell,AP-TSC)拥有巨大的潜力可突破单结Shockley-Queisser限制,但高质量空穴传输层(hole transport layer,HTL)和电子传输层(electron transport layer,ETL)的缺失阻碍了叠层电池的发展.本文利用TCAD Atlas软件对AP-TSC的四种载流子传输层进行优化设计,即顶部HTL、顶部ETL、底部HTL和底部ETL.结果表明,在聚(3,4-乙烯二氧噻吩)-聚苯乙烯磺酸(poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate),PEDOT:PSS)、2,2',7,7'-四[N,N-二(4-甲氧基苯基)氨基]-9,9'-螺二芴(2,2',7,7'-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene,Spiro-OMETAD)、CuI、CuO、NiO和CuSCN中,NiO是最适合的顶部HTL和底部HTL材料.在C_(60)、SnO_(2)、TiO_(2)、ZnO、[6,6]-苯基-C61-丁酸异甲酯((6,6)-phenyl-C61 butyrie acid methyl ester,PCBM)和CdS中,SnO_(2)和ZnO分别是最合适的顶部ETL和底部ETL材料.此外,钙钛矿厚度对电池效率的影响研究得出,无电流限制下FA_(0.8)Cs_(0.2)Pb(I_(0.7)Br_(0.3))_(3)和MAPb_(0.5)Sn_(0.5)I_(3)的厚度拟合方程为y=0.75x?35.通过材料设计和钙钛矿厚度优化,在异质结界面复合速率为1000 cm/s时,AP-TSC依然实现了32%的效率.
