采用全真空单源热蒸发沉积技术直接制备钙钛矿太阳电池用有机无机杂化CH3NH3PbI3薄膜。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能量色散谱仪(EDS)和分光光度计对制备的CH3NH3PbI3薄膜微结构、表面形貌、化学成分和光学性能进行表征分析,并与非真空旋涂法制备的CH3NH3PbI3薄膜性能进行比较。结果表明：单源热蒸发法制备的 CH3NH3PbI3薄膜呈现单一的钙钛矿四方晶体结构,且与蒸发源材料的晶体结构同源性高,没有出现杂质相偏析；对比旋涂法制备的 CH3NH3PbI3薄膜表面均匀致密平整,且薄膜结晶度更高；单源热蒸发法制备的CH3NH3PbI3薄膜禁带宽度为1.57 eV,符合钙钛矿太阳电池吸收层光学性能要求。
Hybrid organolead halide CH3NH3PbI3 thin films were prepared by thermal evaporation with single source. The microstructure, composition, surface morphology and optical properties of the thin films were characterized by X-ray diffractometry (XRD), X-ray dispersive spectroscope (EDS), scanning electron microscope (SEM) and spectro-photometer technique, respectively. The comparison on properties for the films prepared by different methods (thermal evaporation and spin coating) was illustrated. Compared to the film prepared by spin coating, uniform, the nonporous and complete surface coverage perovskite thin film with high level of phase purity and good crystallization is formed by single source thermal evaporation. A direct bandgap of 1.57 eV for CH3NH3PbI3 thin films is obtained which makes this material to be a good light absorber.
参考文献
| [1] | Victoria Gonzalez-Pedro;Emilio J. Juarez-Perez;Waode-Sukmawati Arsyad;Eva M. Barea;Francisco Fabregat-Santiago;Ivan Mora-Sero;Juan Bisquert.General Working Principles of CH_3NH_3PbX_3 Perovskite Solar Cells[J].Nano letters,20142(2):888-893. |
| [2] | Samuel D. Stranks;Giles E. Eperon;Giulia Grancini;Christopher Menelaou;Marcelo J. P. Alcocer;Tomas Leijtens;Laura M. Herz;Annamaria Petrozza;Henry J. Snaith.Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber[J].Science,2013Oct.18 TN.6156(Oct.18 TN.6156):341-344. |
| [3] | Ferrage, Fabien;Cowburn, David;Ghose, Ranajeet.Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells[J].Journal of the American Chemical Society,200917(17):6050-6051. |
| [4] | Jeong-Hyeok Im;Chang-Ryul Lee;Jin-Wook Lee.6.5% efficient perovskite quantum-dot-sensitized solar cell[J].Nanoscale,201110(10):4088-4093. |
| [5] | Mingzhen Liu;Michael B. Johnston;Henry J. Snaith.Efficient planar heterojunction perovskite solar cells by vapour deposition[J].Nature,2013Sep.19 TN.7467(Sep.19 TN.7467):395-A2. |
| [6] | Ming He;Dajiang Zheng;Mengye Wang.High efficiency perovskite solar cells: from complex nanostructure to planar heterojunction[J].Journal of Materials Chemistry, A. Materials for energy and sustainability,201417(17):5994-6003. |
| [7] | Michael M. Lee;Joel Teuscher;Tsutomu Miyasaka;Takurou N. Murakami;Henry J. Snaith.Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites[J].Science,2012Nov.2 TN.6107(Nov.2 TN.6107):643-647. |
| [8] | Julian Burschka;Norman Pellet;Soo-Jin Moon;Robin Humphry-Baker;Peng Gao;Mohammad K. Nazeeruddin;Michael Graetzel.Sequential deposition as a route to high-performance perovskite-sensitized solar cells[J].Nature,2013Jul.18 TN.7458(Jul.18 TN.7458):316-319. |
| [9] | Qi Chen;Huanping Zhou;Ziruo Hong;Song Luo;Hsin-Sheng Duan;Hsin-Hua Wang;Yongsheng Liu;Gang Li;Yang Yang.Planar Heterojunction Perovskite Solar Cells via Vapor-Assisted Solution Process[J].Journal of the American Chemical Society,20142(2):622-625. |
| [10] | Jiangjian Shi;Juan Dong;Songtao Lv;Yuzhuan Xu;Lifeng Zhu;Junyan Xiao;Xin Xu;Huijue Wu;Dongmei Li;Yanhong Luo;Qingbo Meng.Hole-conductor-free perovskite organic lead iodide heterojunction thin-film solar cells: High efficiency and junction property[J].Applied physics letters,20146(6):063901-1-063901-4. |
| [11] | Tom Baikie;Yanan Fang;Jeannette M. Kadro.Synthesis and crystal chemistry of the hybrid perovskite (CH3NH3)Pbl3 for solid-state sensitised solar cell applications[J].Journal of Materials Chemistry, A. Materials for energy and sustainability,201318(18):5628-5641. |
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