Observation of net stimulated emission in CsPbBr₃ thin films prepared by pulsed laser deposition
Inorganic halid perovskites, such as CsPbX3 (X = Br, Cl, or I), have attracted a great deal of attention for next generation on-chip optoelectronic devices for which high quality thin films are essential. So far, most utilized fabrication techniques for halide perovskite films have been based on sol...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2022
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| Online Access: | https://hdl.handle.net/10356/159917 |
| _version_ | 1811695724189974528 |
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| author | Cheng, Shijia Chang, Qing Wang, Zeng Xiao, Lian Chia, Elbert E. M. Sun, Handong |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Cheng, Shijia Chang, Qing Wang, Zeng Xiao, Lian Chia, Elbert E. M. Sun, Handong |
| author_sort | Cheng, Shijia |
| collection | NTU |
| description | Inorganic halid perovskites, such as CsPbX3 (X = Br, Cl, or I), have attracted a great deal of attention for next generation on-chip optoelectronic devices for which high quality thin films are essential. So far, most utilized fabrication techniques for halide perovskite films have been based on solution synthesized methods, taking advantage of cost effectiveness and flexibility. Conventional solution processed thin films suffer from pinholes, poor morphology and/or low mole fraction when embedded in glass or polymer matrixes, unavoidably limiting their application-level. Herein, we report the fabrication of high crystalline and coverage CsPbBr3 thin films by using a single-step physical technique – pulsed laser deposition (PLD). As-fabricated thin films demonstrate stimulated emission with low pump threshold at room temperature. Systematic investigations suggest that the mechanism of stimulated emission in our CsPbBr3 thin films originates from exciton−exciton inelastic scattering. These results not only shed light on high performance all-inorganic CsPbBr3 perovskite films for various optoelectronic devices, but also enrich the comprehension of stimulated emission mechanism of all-inorganic CsPbBr3 perovskite materials. |
| first_indexed | 2024-10-01T07:28:01Z |
| format | Journal Article |
| id | ntu-10356/159917 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:28:01Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1599172022-07-05T08:54:21Z Observation of net stimulated emission in CsPbBr₃ thin films prepared by pulsed laser deposition Cheng, Shijia Chang, Qing Wang, Zeng Xiao, Lian Chia, Elbert E. M. Sun, Handong School of Physical and Mathematical Sciences MajuLab Science::Physics Exciton−Exciton Inelastic Scattering Pulsed Laser Deposition Inorganic halid perovskites, such as CsPbX3 (X = Br, Cl, or I), have attracted a great deal of attention for next generation on-chip optoelectronic devices for which high quality thin films are essential. So far, most utilized fabrication techniques for halide perovskite films have been based on solution synthesized methods, taking advantage of cost effectiveness and flexibility. Conventional solution processed thin films suffer from pinholes, poor morphology and/or low mole fraction when embedded in glass or polymer matrixes, unavoidably limiting their application-level. Herein, we report the fabrication of high crystalline and coverage CsPbBr3 thin films by using a single-step physical technique – pulsed laser deposition (PLD). As-fabricated thin films demonstrate stimulated emission with low pump threshold at room temperature. Systematic investigations suggest that the mechanism of stimulated emission in our CsPbBr3 thin films originates from exciton−exciton inelastic scattering. These results not only shed light on high performance all-inorganic CsPbBr3 perovskite films for various optoelectronic devices, but also enrich the comprehension of stimulated emission mechanism of all-inorganic CsPbBr3 perovskite materials. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) This work was supported by A*STAR under project AME-IRG-A20E5c0083 and Singapore Ministry of Education through the Academic Research Fund under project MOE Tier 1 RG95/19 (S). E.E.M.C. acknowledges support from Singapore Ministry of Education AcRF Tier 2 (Grant No. MOE2019-T2-1-097). 2022-07-05T08:54:21Z 2022-07-05T08:54:21Z 2021 Journal Article Cheng, S., Chang, Q., Wang, Z., Xiao, L., Chia, E. E. M. & Sun, H. (2021). Observation of net stimulated emission in CsPbBr₃ thin films prepared by pulsed laser deposition. Advanced Optical Materials, 9(17), 2100564-. https://dx.doi.org/10.1002/adom.202100564 2195-1071 https://hdl.handle.net/10356/159917 10.1002/adom.202100564 2-s2.0-85107740583 17 9 2100564 en AME-IRG-A20E5c0083 RG95/19 MOE2019-T2-1-097 Advanced Optical Materials © 2021 Wiley-VCH GmbH. All rights reserved. |
| spellingShingle | Science::Physics Exciton−Exciton Inelastic Scattering Pulsed Laser Deposition Cheng, Shijia Chang, Qing Wang, Zeng Xiao, Lian Chia, Elbert E. M. Sun, Handong Observation of net stimulated emission in CsPbBr₃ thin films prepared by pulsed laser deposition |
| title | Observation of net stimulated emission in CsPbBr₃ thin films prepared by pulsed laser deposition |
| title_full | Observation of net stimulated emission in CsPbBr₃ thin films prepared by pulsed laser deposition |
| title_fullStr | Observation of net stimulated emission in CsPbBr₃ thin films prepared by pulsed laser deposition |
| title_full_unstemmed | Observation of net stimulated emission in CsPbBr₃ thin films prepared by pulsed laser deposition |
| title_short | Observation of net stimulated emission in CsPbBr₃ thin films prepared by pulsed laser deposition |
| title_sort | observation of net stimulated emission in cspbbr₃ thin films prepared by pulsed laser deposition |
| topic | Science::Physics Exciton−Exciton Inelastic Scattering Pulsed Laser Deposition |
| url | https://hdl.handle.net/10356/159917 |
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