Huge Photostability Enhancement in Bismuth-Doped Methylammonium Lead Iodide Hybrid Perovskites by Light-Induced Transformation
| العنوان: | Huge Photostability Enhancement in Bismuth-Doped Methylammonium Lead Iodide Hybrid Perovskites by Light-Induced Transformation |
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| المؤلفون: | Carmen Coya, Alicia de Andrés, Javier Bartolomé, Ángel Luis Álvarez, Esteban Climent-Pascual, Carlos Redondo-Obispo, Carlos Zaldo |
| المصدر: | Chemistry of Materials. 31:3662-3671 |
| بيانات النشر: | American Chemical Society (ACS), 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Materials science, business.industry, Band gap, General Chemical Engineering, Doping, Iodide, chemistry.chemical_element, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Bismuth, chemistry.chemical_compound, chemistry, Materials Chemistry, Optoelectronics, Lead(II) iodide, Irradiation, 0210 nano-technology, business, Saturation (chemistry), Perovskite (structure) |
| الوصف: | The doping strategy of hybrid perovskites is being extensively explored not only for higher efficiency but also to overcome issues in photovoltaic materials such as self-degradation pathways in an ambient atmosphere or under visible irradiation. Here, BiI3 is introduced in the synthesis of MAPbI3 films (MA: CH3–NH3+) to stabilize the material. Around 25% of nominal Bi3+ is accommodated in the perovskite structure, producing a shrinking of the unit cell and a small increase of the band gap. The presence of empty Bi gap states quenches the 770 nm red interband emission and results in a near-infrared emission at 1100 nm. However, high enough visible irradiation density induces a progressive segregation of Bi3+ out of the perovskite lattice and promotes the re-emergence of the red emission. This emission is blue-shifted, and its intensity increases strongly with time until it reaches a saturation value which remains stable in the transformed films for extremely high power densities, around 1000 times higher t... |
| تدمد: | 1520-5002 0897-4756 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::33532a90c3f1a71fceff57749b628694 https://doi.org/10.1021/acs.chemmater.9b00270 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........33532a90c3f1a71fceff57749b628694 |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 15205002 08974756 |
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