Inhibition of Phase Segregation in Cesium Lead Mixed-Halide Perovskites by B-Site Doping
Summary: The emergence of all-inorganic halide perovskites has shown great potential in photovoltaic and optoelectronic devices. However, the photo-induced phase segregation in lead mixed-halide perovskites has severely limited their application. Herein, by real-time monitoring the photoluminescence...
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Elsevier
2020-08-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004220306052 |
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| author | Daocheng Hong Peiyang Zhao Yu Du Cheng Zhao Yuren Xia Zhihong Wei Zhong Jin Yuxi Tian |
| author_facet | Daocheng Hong Peiyang Zhao Yu Du Cheng Zhao Yuren Xia Zhihong Wei Zhong Jin Yuxi Tian |
| author_sort | Daocheng Hong |
| collection | DOAJ |
| description | Summary: The emergence of all-inorganic halide perovskites has shown great potential in photovoltaic and optoelectronic devices. However, the photo-induced phase segregation in lead mixed-halide perovskites has severely limited their application. Herein, by real-time monitoring the photoluminescence (PL) spectra of metal mixed-halide perovskites under light irradiation, we found that the photo-induced phase transition can be significantly inhibited by B-site doping. For pristine mixed-halide perovskites, an intermediate phase of CsPbBrxI3-x can only be stabilized under low excitation power. After introducing Sn2+ ions, such intermediate phase can be stabilized in nitrogen atmosphere under high excitation power and phase segregation can be started after the exposure in oxygen due to oxidization of Sn2+. Replacing Sn2+ by Mn2+ can further improve the intermediate phase's tolerance to oxygen proving that B-site doping in perovskites structure by Sn2+ or Mn2+ could effectively minimize the light-induced phase segregation and promote them to serve as promising candidates in photovoltaic and light-emitting devices. |
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| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-12-12T17:17:20Z |
| publishDate | 2020-08-01 |
| publisher | Elsevier |
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| series | iScience |
| spelling | doaj.art-9dcd57f7a9294a84ae27f8f98196bbc72022-12-22T00:17:45ZengElsevieriScience2589-00422020-08-01238101415Inhibition of Phase Segregation in Cesium Lead Mixed-Halide Perovskites by B-Site DopingDaocheng Hong0Peiyang Zhao1Yu Du2Cheng Zhao3Yuren Xia4Zhihong Wei5Zhong Jin6Yuxi Tian7Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China; Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, ChinaKey Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, ChinaKey Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, ChinaKey Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, ChinaKey Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, ChinaKey Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, ChinaKey Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China; Corresponding authorKey Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China; Corresponding authorSummary: The emergence of all-inorganic halide perovskites has shown great potential in photovoltaic and optoelectronic devices. However, the photo-induced phase segregation in lead mixed-halide perovskites has severely limited their application. Herein, by real-time monitoring the photoluminescence (PL) spectra of metal mixed-halide perovskites under light irradiation, we found that the photo-induced phase transition can be significantly inhibited by B-site doping. For pristine mixed-halide perovskites, an intermediate phase of CsPbBrxI3-x can only be stabilized under low excitation power. After introducing Sn2+ ions, such intermediate phase can be stabilized in nitrogen atmosphere under high excitation power and phase segregation can be started after the exposure in oxygen due to oxidization of Sn2+. Replacing Sn2+ by Mn2+ can further improve the intermediate phase's tolerance to oxygen proving that B-site doping in perovskites structure by Sn2+ or Mn2+ could effectively minimize the light-induced phase segregation and promote them to serve as promising candidates in photovoltaic and light-emitting devices.http://www.sciencedirect.com/science/article/pii/S2589004220306052Electrical PropertyOptical PropertyDevices |
| spellingShingle | Daocheng Hong Peiyang Zhao Yu Du Cheng Zhao Yuren Xia Zhihong Wei Zhong Jin Yuxi Tian Inhibition of Phase Segregation in Cesium Lead Mixed-Halide Perovskites by B-Site Doping iScience Electrical Property Optical Property Devices |
| title | Inhibition of Phase Segregation in Cesium Lead Mixed-Halide Perovskites by B-Site Doping |
| title_full | Inhibition of Phase Segregation in Cesium Lead Mixed-Halide Perovskites by B-Site Doping |
| title_fullStr | Inhibition of Phase Segregation in Cesium Lead Mixed-Halide Perovskites by B-Site Doping |
| title_full_unstemmed | Inhibition of Phase Segregation in Cesium Lead Mixed-Halide Perovskites by B-Site Doping |
| title_short | Inhibition of Phase Segregation in Cesium Lead Mixed-Halide Perovskites by B-Site Doping |
| title_sort | inhibition of phase segregation in cesium lead mixed halide perovskites by b site doping |
| topic | Electrical Property Optical Property Devices |
| url | http://www.sciencedirect.com/science/article/pii/S2589004220306052 |
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