Effective Control of Chlorine Contents in MAPbI3–xClx Perovskite Solar Cells Using a Single-Source Vapor Deposition and Anion-Exchange Technique
| العنوان: | Effective Control of Chlorine Contents in MAPbI3–xClx Perovskite Solar Cells Using a Single-Source Vapor Deposition and Anion-Exchange Technique |
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| المؤلفون: | Sanggyu Yim, Jinwoong Jang, Geunpyo Choe |
| المصدر: | ACS Applied Materials & Interfaces. 11:20073-20081 |
| بيانات النشر: | American Chemical Society (ACS), 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Materials science, Ion exchange, Iodide, Energy conversion efficiency, Analytical chemistry, 02 engineering and technology, Chemical vapor deposition, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Grain size, 0104 chemical sciences, chemistry, General Materials Science, Thin film, 0210 nano-technology, Stoichiometry, Perovskite (structure) |
| الوصف: | In this study, a new method is developed to control the Cl-to-I ratio in MAPbI3- xCl x perovskite solar cells (PSCs) more easily and precisely using single-source vapor deposition of MAPbCl3 thin films and a subsequent anion exchange by repeated spin-coatings of methylammonium iodide (MAI) solution. This method can overcome the problems of previous vapor-deposition techniques for PSCs such as the occurrence of morphological defects in the films and difficulty in controlling the stoichiometry of the elements. The repetitive MAI treatments gradually fill the interstitial voids in the perovskite film and increase the average grain size up to 1.2 μm, which improves the charge-transfer property of the cells. The atomic Cl content, i.e., the x value, of the MAPbI3- xCl x film can also be simply controlled by changing the number of MAI treatments. The energy levels and resistive elements of the cells are strongly dependent on the x value of the MAPbI3- xCl x film. A maximum power conversion efficiency of 19.1% is achieved at x = 0.005. |
| تدمد: | 1944-8252 1944-8244 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::fa6b9743cac90d39c46c055174eeb867 https://doi.org/10.1021/acsami.9b05101 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........fa6b9743cac90d39c46c055174eeb867 |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 19448252 19448244 |
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