Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Chinese Journal of Luminescence》 2017-09
Add to Favorite Get Latest Update

Improving The Performance of Inverted Planar Heterojunction Perovskite Solar Cells via Poly(n-vinylcarbazole)as Additive in Electron Transporting Layer

MIAO Ya;DONG Su-juan;LIU Shao-wei;WANG Ya-ling;YANG Yin;CAO Huan-qi;QIN Wen-jing;YANG Li-ying;JI Wei-wei;YIN Shou-gen;Key Laboratory of Display Materials and Photoelectric Devices,Education Ministry of China,Tianjin University of Technology;Tianjin Key Laboratory for Photoelectric Materials and Devices,School of Materials Science and Engineering,Tianjin University of Technology;School of Chemical Engineering and Technology,Tianjin University;China Electronics Technology Group Corporation No.18th Research Institute;  
An electron-rich poly(n-vinylcarbazole)(PVK)was applied to dope the[6,6]-phenyl-C61-butyric acid methyl ester(PCBM)to explore the influence of PVK on the electron transfer layer of planar heterojunction perovskite solar cells.Under the optimized PVK doping mass fraction of 4%,the power conversion efficiency(PCE)of the CH_3NH_3PbI_3 perovskite solar cells is enhanced from(5.11±0.14)%to(9.08±0.46)%.According to the surface morphology study of the electron transport layer,PVK doping improves the coverage and quality of PCBM layer onto the rough perovskite layer,and this is beneficial for the interfacial contact of the CH_3NH_3PbI_3,PCBM films and the top Al electrode,which results in the decrease of leakage current.Moreover steady-state PL analysis shows that the electron-rich PVK have a better passivation effect on the trap states at the perovskite surface or crystal boundaries as a material of interfacial modification of cathodes,thus can apparently decrease the charge recombination of the perovskite solar cells.
【Fund】: 国家自然科学基金(51402214 61504097);; 天津市自然科学基金(17JCYBJC21000 14JCYBJC42800);; 国家重点科学仪器设备发展项目(2014YQ120351);; 天津教委项目(20140423)资助~~
【CateGory Index】: TM914.4
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved