Photodetection and scintillation characterizations of novel lead-bismuth double perovskite halides
Double perovskites are materials exhibiting excellent properties for a variety of optical and electrical applications. In this paper, we characterize the structural, electronic, optical, electrical and scintillation properties of two variants of lead-bismuth halide double perovskite, with the genera...
| Main Authors: | , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/163362 |
| _version_ | 1811684616035106816 |
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| author | Maddalena, Francesco Witkowski, Marcin E. Makowski, Michal Bachiri, Abdellah Arramel Yang, Ting Mahyuddin, Muhammad Haris Baravaglio, Matilde Boutchich, Mohamed Drozdowski, Winicjusz Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Maddalena, Francesco Witkowski, Marcin E. Makowski, Michal Bachiri, Abdellah Arramel Yang, Ting Mahyuddin, Muhammad Haris Baravaglio, Matilde Boutchich, Mohamed Drozdowski, Winicjusz Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong |
| author_sort | Maddalena, Francesco |
| collection | NTU |
| description | Double perovskites are materials exhibiting excellent properties for a variety of optical and electrical applications. In this paper, we characterize the structural, electronic, optical, electrical and scintillation properties of two variants of lead-bismuth halide double perovskite, with the general chemical composition of Cs4PbBi2X12 (X = Br, I). Density functional theory calculations reveal that the Br- and I-variants have direct and indirect bandgaps, respectively. The Cs4PbBi2X12 perovskites also show a broad emission down to near infrared, suggesting the presence of self trapped excitons. Photoluminescence time-resolved measurements show a very fast decay time with average decay times of 4.1 ns and 0.39 ns, for the Br- and I-variant, respectively. Photodetectors fabricated with the Cs4PbBi2X12 perovskites show clear rectification under bias, and a moderate response to illumination. Due to the presence of very heavy atoms and density of the material, the Cs4PbBi2X12 perovskites are strong X-ray absorbers with attenuation lengths comparable to Gd2O2S, a standard X-ray phosphor. The Cs4PbBi2X12 perovskites also show strong scintillation at cryogenic temperatures below 30 K, but thermal quenching severely reduces the light yield at room temperature. Although the performances of both crystals for photodetectors and scintillators are still low in comparison with some other perovskites, they are still a very promising materials due to their short absorption length and high theoretical maximum light yield, and their optoelectronic properties could be significantly improved by ion doping. |
| first_indexed | 2024-10-01T04:31:27Z |
| format | Journal Article |
| id | ntu-10356/163362 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:31:27Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1633622022-12-05T02:34:18Z Photodetection and scintillation characterizations of novel lead-bismuth double perovskite halides Maddalena, Francesco Witkowski, Marcin E. Makowski, Michal Bachiri, Abdellah Arramel Yang, Ting Mahyuddin, Muhammad Haris Baravaglio, Matilde Boutchich, Mohamed Drozdowski, Winicjusz Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong School of Electrical and Electronic Engineering CNRS International NTU THALES Research Alliances Engineering::Materials Total-Energy Calculations Solar-Cells Double perovskites are materials exhibiting excellent properties for a variety of optical and electrical applications. In this paper, we characterize the structural, electronic, optical, electrical and scintillation properties of two variants of lead-bismuth halide double perovskite, with the general chemical composition of Cs4PbBi2X12 (X = Br, I). Density functional theory calculations reveal that the Br- and I-variants have direct and indirect bandgaps, respectively. The Cs4PbBi2X12 perovskites also show a broad emission down to near infrared, suggesting the presence of self trapped excitons. Photoluminescence time-resolved measurements show a very fast decay time with average decay times of 4.1 ns and 0.39 ns, for the Br- and I-variant, respectively. Photodetectors fabricated with the Cs4PbBi2X12 perovskites show clear rectification under bias, and a moderate response to illumination. Due to the presence of very heavy atoms and density of the material, the Cs4PbBi2X12 perovskites are strong X-ray absorbers with attenuation lengths comparable to Gd2O2S, a standard X-ray phosphor. The Cs4PbBi2X12 perovskites also show strong scintillation at cryogenic temperatures below 30 K, but thermal quenching severely reduces the light yield at room temperature. Although the performances of both crystals for photodetectors and scintillators are still low in comparison with some other perovskites, they are still a very promising materials due to their short absorption length and high theoretical maximum light yield, and their optoelectronic properties could be significantly improved by ion doping. Ministry of Education (MOE) The authors acknowledge financial supports from the Ministry of Education (Singapore), under its AcRF Tier 2 grant (MOE-T2EP50121-0012), the MERLION Program, and Thales-CINTRA Funding. 2022-12-05T02:34:18Z 2022-12-05T02:34:18Z 2022 Journal Article Maddalena, F., Witkowski, M. E., Makowski, M., Bachiri, A., Arramel, Yang, T., Mahyuddin, M. H., Baravaglio, M., Boutchich, M., Drozdowski, W., Dujardin, C., Birowosuto, M. D. & Dang, C. (2022). Photodetection and scintillation characterizations of novel lead-bismuth double perovskite halides. Journal of Materials Chemistry C, 10(31), 11266-11275. https://dx.doi.org/10.1039/d2tc01646j 2050-7526 https://hdl.handle.net/10356/163362 10.1039/d2tc01646j 2-s2.0-85135124244 31 10 11266 11275 en MOE-T2EP50121-0012 Journal of Materials Chemistry C © 2022 The Royal Society of Chemistry. All rights reserved. |
| spellingShingle | Engineering::Materials Total-Energy Calculations Solar-Cells Maddalena, Francesco Witkowski, Marcin E. Makowski, Michal Bachiri, Abdellah Arramel Yang, Ting Mahyuddin, Muhammad Haris Baravaglio, Matilde Boutchich, Mohamed Drozdowski, Winicjusz Dujardin, Christophe Birowosuto, Muhammad Danang Dang, Cuong Photodetection and scintillation characterizations of novel lead-bismuth double perovskite halides |
| title | Photodetection and scintillation characterizations of novel lead-bismuth double perovskite halides |
| title_full | Photodetection and scintillation characterizations of novel lead-bismuth double perovskite halides |
| title_fullStr | Photodetection and scintillation characterizations of novel lead-bismuth double perovskite halides |
| title_full_unstemmed | Photodetection and scintillation characterizations of novel lead-bismuth double perovskite halides |
| title_short | Photodetection and scintillation characterizations of novel lead-bismuth double perovskite halides |
| title_sort | photodetection and scintillation characterizations of novel lead bismuth double perovskite halides |
| topic | Engineering::Materials Total-Energy Calculations Solar-Cells |
| url | https://hdl.handle.net/10356/163362 |
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