https://scholars.lib.ntu.edu.tw/handle/123456789/598122
標題: | Influence of oxygen ion migration from substrates on photochemical degradation of ch3nh3pbi3 hybrid Perovskite | 作者: | Zhidkov I.S Akbulatov A.F Inasaridze L.N Kukharenko A.I Frolova L.A Cholakh S.O Chueh C.-C Troshin P.A Kurmaev E.Z. CHU-CHEN CHUEH |
關鍵字: | Hybrid perovskites;Light-induced degradation;Oxygen ions;Substrates;XPS;Core levels;Indium compounds;ITO glass;Layered semiconductors;Light;Oxygen;Perovskite;Photodegradation;Tin oxides;Titanium dioxide;X ray photoelectron spectroscopy;Degradation process;Different substrates;Influence of oxygen;Partial oxidations;Photochemical degradation;Photochemical stability;Spectra measurements;Valence band spectra;Lead compounds | 公開日期: | 2021 | 卷: | 14 | 期: | 16 | 來源出版物: | Energies | 摘要: | Measurements of XPS survey, core levels (N 1s, O 1s, Pb 4f, I 3d), and valence band (VB) spectra of CH3NH3PbI3 (MAPbI3) hybrid perovskite prepared on different substrates (glass, indium tin oxide (ITO), and TiO2) aged under different light-soaking conditions at room temperature are presented. The results reveal that the photochemical stability of MAPbI3 depends on the type of substrate and gradually decreases when glass is replaced by ITO and TiO2. Also, the degradation upon exposure to visible light is accompanied by the formation of MAI, PbI2, and Pb0 products as shown by XPS core levels spectra. According to XPS O 1s and VB spectra measurements, this degradation process is superimposed on the partial oxidation of lead atoms in ITO/MAPbI3 and TiO2/MAPbI3, for which Pb–O bonds are formed due to the diffusion of the oxygen ions from the substrates. This unexpected interaction leads to additional photochemical degradation. ? 2021 by the author. Licensee MDPI, Basel, Switzerland. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113420125&doi=10.3390%2fen14165062&partnerID=40&md5=3c87be410609415fd65128b3c510eaa2 https://scholars.lib.ntu.edu.tw/handle/123456789/598122 |
ISSN: | 19961073 | DOI: | 10.3390/en14165062 |
顯示於: | 化學工程學系 |
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