perovskitesolarcells(钙钛矿太阳能电池).docVIP

Supporting information for Flexible, Hole Transporting Layer-free and Stable CH3NH3PbI3/PC61BM Planar Heterojunction Perovskite Solar Cells Yong Zhanga, Xiaotian Hua, Lie Chena,b, Zengqi Huanga, Qingxia Fua, Yawen Liua, Lin Zhanga, Yiwang Chen*a,b aCollege of Chemistry/Institute of Polymers, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China bJiangxi Provincial Key Laboratory of New Energy Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China Corresponding author. Tel.: +86 791 fax: +86 791 E-mail: ywchen@ncu.edu.cn (Y. Chen)  Figure S1. Scanning electron microscopy images of a CH3NH3PbI3 perovskite film on ITO/PEDOT:PSS substrate.  Figure S2. Tapping-mode atomic force microscopy phase images of (a) ITO substrate, (b) PEDOT:PSS on ITO substrate, (c) CH3NH3PbI3 on bare ITO substrate, (d) CH3NH3PbI3 on ITO/PEDOT:PSS substrate with an area of 5μm×5μm.  Figure S3. The absorbance of the CH3NH3PbI3 perovskite films based on HTL-free and PEDOT:PSS HTL.  Figure S4. The elemental energy dispersive spectroscopy maps of the distribution of In, Al, N and O in HTL-free perovskite, respectively.  Figure S5. (a) The J-V curve of the best-performing PEDOT:PSS HTL perovskite solar cell with the structure of glass/ITO/PEDOT:PSS/CH3NH3PbI3/PC61BM/Al. The curve was measured by Keithley 2400 under AM 1.5 G simulated irradiation. (b) The corresponding IPCE spectrum of the best performance PEDOT:PSS HTL perovskite solar cell, the calculated Jsc is 18.5 mA cm-2.  Figure S6. UPS spectra cut-off of perovskite on HTL-free and PEDOT:PSS HTL.  Figure S7. Histograms of (a) Voc, (b) Jsc, (c) FF, and (d) PCE measured for 40 samples with a structure of ITO/CH3NH3PbI3/PC61BM/Al.  Figure S8. Forward (from Jsc to Voc) and reverse (from Voc to Jsc) scan current density-voltage curves for the inverted perovskite solar cells with the structure of glass/ITO/PEDOT:PSS/CH3NH3PbI3/PC61BM/Al. The curves were measured by Keithley 2400 under AM 1.5 G sim