Enhanced Grain Size and Crystallinity in CH3NH3PbI3 Perovskite Films by Metal Additives to the Single-Step Solution Fabrication Process
| Autor: | Adam B. Phillips, Michael J. Heben, Zhaoning Song, Kamala Khanal Subedi, Yanfa Yan, Randy J. Ellingson, Niraj Shrestha, Suneth C. Watthage, Ramez Hosseinian Ahangharnejhad, Zahrah S. Almutawah |
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| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Materials science Fabrication Mechanical Engineering Iodide Photovoltaic system 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Grain size 0104 chemical sciences Metal Crystallinity chemistry Chemical engineering Mechanics of Materials Scientific method visual_art visual_art.visual_art_medium General Materials Science 0210 nano-technology Perovskite (structure) |
| Zdroj: | MRS Advances. 3:3237-3242 |
| ISSN: | 2059-8521 |
| Popis: | Methods of obtaining large grain size and high crystallinity in absorber materials play an important role in fabrication of high-performance methylammonium lead iodide (MAPbI3) perovskite solar cells. Here we study the effect of adding small concentrations of Cd2+, Zn2+, and Fe2+salts to the perovskite precursor solution used in the single-step solution fabrication process. Enhanced grain size and crystallinity in MAPbI3 films were obtained by using 0.1% of Cd2+ or Zn2+in the precursor solution. Consequently, solar cells constructed with Cd- and Zn-doped perovskite films show a significant improvement in device performance. These results suggest that the process may be an effective and facile method to fabricate high-efficiency perovskite photovoltaic devices. |
| Databáze: | OpenAIRE |
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