Pressure-induced phase transitions and bandgap-tuning effect of methylammonium lead iodide perovskite
Pressure-induced crystallographic transitions and optical behavior of MAPbI3 (MA=methylammonium) were investigated using in-situ synchrotron X-ray diffraction and laser-excited photoluminescence spectroscopy. We observed that the tetragonal phase that presents under ambient pressure transformed to a...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/145008 |
| _version_ | 1826115737742213120 |
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| author | Jiang, Shaojie Fang, Yanan Li, Ruipeng White, Timothy John Wang, Zhongwu Baikie, Tom Fang, Jiye |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Jiang, Shaojie Fang, Yanan Li, Ruipeng White, Timothy John Wang, Zhongwu Baikie, Tom Fang, Jiye |
| author_sort | Jiang, Shaojie |
| collection | NTU |
| description | Pressure-induced crystallographic transitions and optical behavior of MAPbI3 (MA=methylammonium) were investigated using in-situ synchrotron X-ray diffraction and laser-excited photoluminescence spectroscopy. We observed that the tetragonal phase that presents under ambient pressure transformed to a ReO3-type cubic phase at 0.3 GPa, which further converted into a putative orthorhombic structure at 2.7 GPa. The sample was finally separated into crystalline and amorphous fractions beyond 4.7 GPa. During the decompression, the phase-mixed material restored the original structure in two distinct pathways depending on the peak pressures. Being monitored using a laser-excited photoluminescence technique under each applied pressure, it was determined that the bandgap reduced with an increase of the pressure till 0.3 GPa and then enlarged with an increase of the pressure up to 2.7 GPa. This work lays the foundation for understanding pressure-induced phase transitions and bandgap tuning of MAPbI3, enriching potentially the toolkit for engineering perovskites related photovoltaic devices. |
| first_indexed | 2024-10-01T04:00:04Z |
| format | Journal Article |
| id | ntu-10356/145008 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:00:04Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1450082023-07-14T16:00:48Z Pressure-induced phase transitions and bandgap-tuning effect of methylammonium lead iodide perovskite Jiang, Shaojie Fang, Yanan Li, Ruipeng White, Timothy John Wang, Zhongwu Baikie, Tom Fang, Jiye School of Materials Science and Engineering Energy Research Institute @ NTU (ERI@N) Engineering::Materials Phase Transformation Photovoltaic Pressure-induced crystallographic transitions and optical behavior of MAPbI3 (MA=methylammonium) were investigated using in-situ synchrotron X-ray diffraction and laser-excited photoluminescence spectroscopy. We observed that the tetragonal phase that presents under ambient pressure transformed to a ReO3-type cubic phase at 0.3 GPa, which further converted into a putative orthorhombic structure at 2.7 GPa. The sample was finally separated into crystalline and amorphous fractions beyond 4.7 GPa. During the decompression, the phase-mixed material restored the original structure in two distinct pathways depending on the peak pressures. Being monitored using a laser-excited photoluminescence technique under each applied pressure, it was determined that the bandgap reduced with an increase of the pressure till 0.3 GPa and then enlarged with an increase of the pressure up to 2.7 GPa. This work lays the foundation for understanding pressure-induced phase transitions and bandgap tuning of MAPbI3, enriching potentially the toolkit for engineering perovskites related photovoltaic devices. National Research Foundation (NRF) Accepted version This work was partially supported by NRF-CRP14-2014-03 and Custom Electronics, Inc. CHESS was supported by the NSF award DMR-1332208. Bandgap calculations were contributed by Hai Xiao, Jason Crowley and William A. Goddard III from Materials and Process Simulation Center (MSC) and Joint Center for Artificial Photosynthesis (JCAP), California Institute of Technology. S.J. acknowledges the support from Binghamton University. 2020-12-08T07:03:57Z 2020-12-08T07:03:57Z 2018 Journal Article Jiang, S., Fang, Y., Li, R., White, T. J., Wang, Z., Baikie, T., & Fang, J. (2018). Pressure-induced phase transitions and bandgap-tuning effect of methylammonium lead iodide perovskite. MRS Advances, 3(32), 1825-1830. doi:10.1557/adv.2018.154 2059-8521 https://hdl.handle.net/10356/145008 10.1557/adv.2018.154 32 3 1825 1830 en NRF-CRP14-2014-03 MRS Advances © 2018 Materials Research Society. All rights reserved. This paper was published in MRS Advances and is made available with permission of Materials Research Society. application/pdf |
| spellingShingle | Engineering::Materials Phase Transformation Photovoltaic Jiang, Shaojie Fang, Yanan Li, Ruipeng White, Timothy John Wang, Zhongwu Baikie, Tom Fang, Jiye Pressure-induced phase transitions and bandgap-tuning effect of methylammonium lead iodide perovskite |
| title | Pressure-induced phase transitions and bandgap-tuning effect of methylammonium lead iodide perovskite |
| title_full | Pressure-induced phase transitions and bandgap-tuning effect of methylammonium lead iodide perovskite |
| title_fullStr | Pressure-induced phase transitions and bandgap-tuning effect of methylammonium lead iodide perovskite |
| title_full_unstemmed | Pressure-induced phase transitions and bandgap-tuning effect of methylammonium lead iodide perovskite |
| title_short | Pressure-induced phase transitions and bandgap-tuning effect of methylammonium lead iodide perovskite |
| title_sort | pressure induced phase transitions and bandgap tuning effect of methylammonium lead iodide perovskite |
| topic | Engineering::Materials Phase Transformation Photovoltaic |
| url | https://hdl.handle.net/10356/145008 |
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