Improved perovskite morphology and crystallinity using porous PbI2 layers for efficient planar heterojunction solar cells
| Autor: | Yuejin Zhu, Xianyu Jia, Jianjun Zhang, Jing Zhang, Like Huang, Jie Xu, Ziyang Hu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Spin coating
Materials science Physics and Astronomy (miscellaneous) Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Organic semiconductor chemistry.chemical_compound Crystallinity chemistry Chemical engineering Polystyrene 0210 nano-technology Porosity Layer (electronics) Perovskite (structure) |
| Zdroj: | Applied Physics Letters. 111:243902 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.5012135 |
| Popis: | We demonstrate the flexible and facile use of porous PbI2 layers to fabricate high quality perovskite films with a dense surface and without residual PbI2. PbI2 precursor solutions by adding polystyrene pore-forming agents are first spin-coated to fabricate the wet film. A porous PbI2 layer is formed by washing off polystyrene using organic solvents. The porous PbI2 layer not only serves as a channel for transporting the CH3NH3I solution but also offers extremely enlarged contact areas, facilitating interfacial reaction with CH3NH3I. Shiny smooth perovskite films with excellent electronic quality and solar cells with an efficiency up to 17% are obtained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|