Anisotropic emission of orientation-controlled mixed-dimensional perovskites for light-emitting devices
Perovskite light-emitting diodes (PeLEDs) are attracting increasing attention owing to their impressive efficiencies and high luminance across the full visible light range. Further improvement of the external quantum efficiency (EQE) of planar PeLEDs is limited by the light out-coupling efficiency....
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materiomics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847823000345 |
| _version_ | 1797783622535610368 |
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| author | Yuhui Qi Yang Liu Chen Lin Yunzhou Deng Peng Bai Yunan Gao Haiming Zhu Zhizhen Ye Yizheng Jin |
| author_facet | Yuhui Qi Yang Liu Chen Lin Yunzhou Deng Peng Bai Yunan Gao Haiming Zhu Zhizhen Ye Yizheng Jin |
| author_sort | Yuhui Qi |
| collection | DOAJ |
| description | Perovskite light-emitting diodes (PeLEDs) are attracting increasing attention owing to their impressive efficiencies and high luminance across the full visible light range. Further improvement of the external quantum efficiency (EQE) of planar PeLEDs is limited by the light out-coupling efficiency. Introducing perovskite emitters with directional emission in PeLEDs is an effective way to improve light extraction. Here, we report that it is possible to achieve directional emission in mixed-dimensional perovskites by controlling the orientation of the emissive center in the film. Multiple characterization methods suggest that our mixed-dimensional perovskite film shows highly orientated transition dipole moments (TDMs) with the horizontal ratio of over 88%, substantially higher than that of the isotropic emitters. The horizontally dominated TDMs lead to PeLEDs with exceptional high light out-coupling efficiency of over 32%, enabling a high EQE of 18.2%. |
| first_indexed | 2024-03-13T00:28:31Z |
| format | Article |
| id | doaj.art-e25033ae68ca45a583ae452f1d0b4006 |
| institution | Directory Open Access Journal |
| issn | 2352-8478 |
| language | English |
| last_indexed | 2024-03-13T00:28:31Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj.art-e25033ae68ca45a583ae452f1d0b40062023-07-11T04:06:28ZengElsevierJournal of Materiomics2352-84782023-07-0194762767Anisotropic emission of orientation-controlled mixed-dimensional perovskites for light-emitting devicesYuhui Qi0Yang Liu1Chen Lin2Yunzhou Deng3Peng Bai4Yunan Gao5Haiming Zhu6Zhizhen Ye7Yizheng Jin8Key Laboratory of Excited-State Materials of Zhejiang Province, State Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, ChinaState Key Laboratory of Silicon Materials, School of Materials and Engineering, Zhejiang University, Hangzhou, 310027, China; Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Institute of Wenzhou, Zhejiang University, Wenzhou, 325006, China; Corresponding author. State Key Laboratory of Silicon Materials, School of Materials and Engineering, Zhejiang University, Hangzhou, 310027, China.State Key Laboratory of Silicon Materials, School of Materials and Engineering, Zhejiang University, Hangzhou, 310027, ChinaState Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Hangzhou, 310027, ChinaChina State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, 100871, ChinaChina State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, 100871, ChinaKey Laboratory of Excited-State Materials of Zhejiang Province, State Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, ChinaState Key Laboratory of Silicon Materials, School of Materials and Engineering, Zhejiang University, Hangzhou, 310027, China; Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Institute of Wenzhou, Zhejiang University, Wenzhou, 325006, China; Corresponding author. State Key Laboratory of Silicon Materials, School of Materials and Engineering, Zhejiang University, Hangzhou, 310027, China.Key Laboratory of Excited-State Materials of Zhejiang Province, State Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China; Corresponding author.Perovskite light-emitting diodes (PeLEDs) are attracting increasing attention owing to their impressive efficiencies and high luminance across the full visible light range. Further improvement of the external quantum efficiency (EQE) of planar PeLEDs is limited by the light out-coupling efficiency. Introducing perovskite emitters with directional emission in PeLEDs is an effective way to improve light extraction. Here, we report that it is possible to achieve directional emission in mixed-dimensional perovskites by controlling the orientation of the emissive center in the film. Multiple characterization methods suggest that our mixed-dimensional perovskite film shows highly orientated transition dipole moments (TDMs) with the horizontal ratio of over 88%, substantially higher than that of the isotropic emitters. The horizontally dominated TDMs lead to PeLEDs with exceptional high light out-coupling efficiency of over 32%, enabling a high EQE of 18.2%.http://www.sciencedirect.com/science/article/pii/S2352847823000345Perovskite light-emitting diodesMixed dimensional peorvskiteTransition dipole momentEmission orientationLight outcoupling |
| spellingShingle | Yuhui Qi Yang Liu Chen Lin Yunzhou Deng Peng Bai Yunan Gao Haiming Zhu Zhizhen Ye Yizheng Jin Anisotropic emission of orientation-controlled mixed-dimensional perovskites for light-emitting devices Journal of Materiomics Perovskite light-emitting diodes Mixed dimensional peorvskite Transition dipole moment Emission orientation Light outcoupling |
| title | Anisotropic emission of orientation-controlled mixed-dimensional perovskites for light-emitting devices |
| title_full | Anisotropic emission of orientation-controlled mixed-dimensional perovskites for light-emitting devices |
| title_fullStr | Anisotropic emission of orientation-controlled mixed-dimensional perovskites for light-emitting devices |
| title_full_unstemmed | Anisotropic emission of orientation-controlled mixed-dimensional perovskites for light-emitting devices |
| title_short | Anisotropic emission of orientation-controlled mixed-dimensional perovskites for light-emitting devices |
| title_sort | anisotropic emission of orientation controlled mixed dimensional perovskites for light emitting devices |
| topic | Perovskite light-emitting diodes Mixed dimensional peorvskite Transition dipole moment Emission orientation Light outcoupling |
| url | http://www.sciencedirect.com/science/article/pii/S2352847823000345 |
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