| Title | PbI2 platelets for inverted planar organolead Halide Perovskite solar cells via ultrasonic spray deposition |
| Authors | Chai, Gaoda Wang, Shizhen Xia, Zhonggao Luo, Shiqiang Teng, Chao Yang, Tingbin Nie, Zanxiang Meng, Tiejun Zhou, Hang |
| Affiliation | Peking Univ, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China. Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China. Zinergy Shenzhen Ltd, Taohuayuan Sci & Technol Innovat Pk, Shenzhen 518101, Peoples R China. Univ Delaware, Inst Energy Convers, 451 Wyoming Rd, Newark, DE 19716 USA. |
| Keywords | ultrasonic spray deposition perovskite solar cells PbI2 platelets seed growth LEAD IODIDE VACUUM DEPOSITION CHARGE-TRANSPORT THIN-FILM EFFICIENT CH3NH3PBI3 RECOMBINATION LENGTHS GROWTH LAYERS |
| Issue Date | 2017 |
| Publisher | SEMICONDUCTOR SCIENCE AND TECHNOLOGY |
| Citation | SEMICONDUCTOR SCIENCE AND TECHNOLOGY.2017,32(7). |
| Abstract | Morphology control of organometal halide perovskite thin films is of importance in order to develop highly efficient perovskite solar cells. Here, a seeded growth method is introduced for the first time to deposit lead iodide (PbI2) with platelet structures on an organic hole transporting layer PEDOT:PSS. The PbI2 platelets are effectively converted into perovskite thin film when subject to sprayed droplets of methylammonium in isopropyl alcohol. Compared with evaporated compact PbI2 layers, the PbI2 platelet enables a thicker perovskite thin film to be formed with less unreacted PbI2. Using this technique, we have achieved pinhole-free and uniform perovskite thin film with root-mean-square roughness of 12.81 nm, and an average solar cell efficiency higher than those fabricated from compact PbI2 thin film. |
| URI | http://hdl.handle.net/20.500.11897/472474 |
| ISSN | 0268-1242 |
| DOI | 10.1088/1361-6641/aa6e47 |
| Indexed | SCI(E) |
| Appears in Collections: | 深圳研究生院待认领 |
