Two-photon optical properties in individual organic-inorganic perovskite microplates
Metal-halide perovskites are recently extensively investigated as light absorbing material in solar cells. The outstanding optoelectronic properties and tunable light emission of the perovskites also make them promising candidates for light emitting diodes and lasers. However, understanding the rele...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/141282 |
| _version_ | 1811680865073233920 |
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| author | Wei, Qi Du, Bin Wu, Bo Guo, Jia Li, Mingjie Fu, Jianhui Zhang, Zhipeng Yu, Jianwei Hou, Tianyu Xing, Guichuan Sum, Tze Chien Huang, Wei |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Wei, Qi Du, Bin Wu, Bo Guo, Jia Li, Mingjie Fu, Jianhui Zhang, Zhipeng Yu, Jianwei Hou, Tianyu Xing, Guichuan Sum, Tze Chien Huang, Wei |
| author_sort | Wei, Qi |
| collection | NTU |
| description | Metal-halide perovskites are recently extensively investigated as light absorbing material in solar cells. The outstanding optoelectronic properties and tunable light emission of the perovskites also make them promising candidates for light emitting diodes and lasers. However, understanding the relevant mechanisms and processes of the dependence of perovskite light emission on temperature and crystal size is still challenging. Herein, the CH3NH3PbBr3 monocrystals of different sizes are uniformly excited by two-photon absorption at 800 nm (100 fs, 1 KHz). In contrast to the reported relative large exciton binding energy (≈76 meV) and spectrum clearly resolved excitonic absorption, the light emission origin in CH3NH3PbBr3 microcrystals at room temperature is unambiguously determined to be dominated by free electron–hole bimolecular recombination. The coherent light emission threshold of CH3NH3PbBr3 microcrystal increases with temperature, which is closely related to the temperature induced transition from exciton gas to free charge carriers. In addition, the coherent light emission threshold is found to decrease with the microcrystal size, which could be well interpreted by the interaction between the optical confinement, defect density, and cavity quantum electrodynamics effect. These results presented here may facilitate the development of perovskite light emitting diodes and lasers. |
| first_indexed | 2024-10-01T03:31:50Z |
| format | Journal Article |
| id | ntu-10356/141282 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:31:50Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1412822023-02-28T19:26:30Z Two-photon optical properties in individual organic-inorganic perovskite microplates Wei, Qi Du, Bin Wu, Bo Guo, Jia Li, Mingjie Fu, Jianhui Zhang, Zhipeng Yu, Jianwei Hou, Tianyu Xing, Guichuan Sum, Tze Chien Huang, Wei School of Physical and Mathematical Sciences Science::Physics::Optics and light Microlasers Perovskites Metal-halide perovskites are recently extensively investigated as light absorbing material in solar cells. The outstanding optoelectronic properties and tunable light emission of the perovskites also make them promising candidates for light emitting diodes and lasers. However, understanding the relevant mechanisms and processes of the dependence of perovskite light emission on temperature and crystal size is still challenging. Herein, the CH3NH3PbBr3 monocrystals of different sizes are uniformly excited by two-photon absorption at 800 nm (100 fs, 1 KHz). In contrast to the reported relative large exciton binding energy (≈76 meV) and spectrum clearly resolved excitonic absorption, the light emission origin in CH3NH3PbBr3 microcrystals at room temperature is unambiguously determined to be dominated by free electron–hole bimolecular recombination. The coherent light emission threshold of CH3NH3PbBr3 microcrystal increases with temperature, which is closely related to the temperature induced transition from exciton gas to free charge carriers. In addition, the coherent light emission threshold is found to decrease with the microcrystal size, which could be well interpreted by the interaction between the optical confinement, defect density, and cavity quantum electrodynamics effect. These results presented here may facilitate the development of perovskite light emitting diodes and lasers. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Accepted version 2020-06-05T08:12:18Z 2020-06-05T08:12:18Z 2017 Journal Article Wei, Q., Du, B., Wu, B., Guo, J., Li, M., Fu, J., ... Huang, W. (2017). Two-photon optical properties in individual organic-inorganic perovskite microplates. Advanced Optical Materials, 5(24), 1700809-. doi:10.1002/adom.201700809 2195-1071 https://hdl.handle.net/10356/141282 10.1002/adom.201700809 2-s2.0-85032902461 24 5 1700809 en Advanced Optical Materials This is the peer reviewed version of the following article: Wei, Q., Du, B., Wu, B., Guo, J., Li, M., Fu, J., ... Huang, W. (2017). Two-photon optical properties in individual organic-inorganic perovskite microplates. Advanced Optical Materials, 5(24), 1700809-. doi:10.1002/adom.201700809, which has been published in final form at 10.1002/adom.201700809. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
| spellingShingle | Science::Physics::Optics and light Microlasers Perovskites Wei, Qi Du, Bin Wu, Bo Guo, Jia Li, Mingjie Fu, Jianhui Zhang, Zhipeng Yu, Jianwei Hou, Tianyu Xing, Guichuan Sum, Tze Chien Huang, Wei Two-photon optical properties in individual organic-inorganic perovskite microplates |
| title | Two-photon optical properties in individual organic-inorganic perovskite microplates |
| title_full | Two-photon optical properties in individual organic-inorganic perovskite microplates |
| title_fullStr | Two-photon optical properties in individual organic-inorganic perovskite microplates |
| title_full_unstemmed | Two-photon optical properties in individual organic-inorganic perovskite microplates |
| title_short | Two-photon optical properties in individual organic-inorganic perovskite microplates |
| title_sort | two photon optical properties in individual organic inorganic perovskite microplates |
| topic | Science::Physics::Optics and light Microlasers Perovskites |
| url | https://hdl.handle.net/10356/141282 |
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