Spacer cation engineering in Ruddlesden-Popper perovskites for efficient red light-emitting diodes with recommendation 2020 color coordinates
Ruddlesden-Popper perovskites (RPPs) have been demonstrated as a very promising approach for tuning the emission color of perovskite light-emitting diodes (PeLEDs). However, achieving high-performance red PeLEDs with recommendation 2020 color coordinates is still challenging due to the lack of reaso...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Online Access: | https://hdl.handle.net/10356/164634 |
| _version_ | 1826120279657545728 |
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| author | Qing, Jian Ramesh, Sankaran Liu, Xiao-Ke Wang, Heyong Yu, Hongling Kuang, Chaoyang Hou, Lintao Zhang, Wenjing Sum, Tze Chien Gao, Feng |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Qing, Jian Ramesh, Sankaran Liu, Xiao-Ke Wang, Heyong Yu, Hongling Kuang, Chaoyang Hou, Lintao Zhang, Wenjing Sum, Tze Chien Gao, Feng |
| author_sort | Qing, Jian |
| collection | NTU |
| description | Ruddlesden-Popper perovskites (RPPs) have been demonstrated as a very promising approach for tuning the emission color of perovskite light-emitting diodes (PeLEDs). However, achieving high-performance red PeLEDs with recommendation 2020 color coordinates is still challenging due to the lack of reasonable control over the properties of RPP films. Here, we demonstrate that the judicious selection of spacer cations in RPPs affords a lever for engineering their film properties, including phase distribution, energy funneling process, trap density, and carrier mobility. Four structurally related spacer cations, benzylammonium (BZA), phenylethylammonium (PEA), 3-phenyl-1-propylammonium (PPA), and phenoxyethylammonium (POEA), are studied. Owing to narrow phase distribution, efficient energy funneling, and low trap density, the POEA-based RPP films enable efficient red PeLEDs with a peak external quantum efficiency of 10.3%, a maximum brightness of 1052 cd m−2, and excellent spectral stability. Significantly, the electroluminescence spectrum represents CIE 1931 color coordinates of (0.71, 0.29), which meets the recommendation 2020 standard (0.708, 0.292). The findings provide useful guidelines for the rational design of new organic spacer cations for RPPs with high performance. |
| first_indexed | 2024-10-01T05:13:56Z |
| format | Journal Article |
| id | ntu-10356/164634 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:13:56Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1646342023-02-11T23:32:51Z Spacer cation engineering in Ruddlesden-Popper perovskites for efficient red light-emitting diodes with recommendation 2020 color coordinates Qing, Jian Ramesh, Sankaran Liu, Xiao-Ke Wang, Heyong Yu, Hongling Kuang, Chaoyang Hou, Lintao Zhang, Wenjing Sum, Tze Chien Gao, Feng School of Physical and Mathematical Sciences Interdisciplinary Graduate School (IGS) Energy Research Institute @ NTU (ERI@N) Science::Physics Perovskite Light-Emitting Diode Photoluminescence Transient Absorption Spectroscopy Ruddlesden-Popper perovskites (RPPs) have been demonstrated as a very promising approach for tuning the emission color of perovskite light-emitting diodes (PeLEDs). However, achieving high-performance red PeLEDs with recommendation 2020 color coordinates is still challenging due to the lack of reasonable control over the properties of RPP films. Here, we demonstrate that the judicious selection of spacer cations in RPPs affords a lever for engineering their film properties, including phase distribution, energy funneling process, trap density, and carrier mobility. Four structurally related spacer cations, benzylammonium (BZA), phenylethylammonium (PEA), 3-phenyl-1-propylammonium (PPA), and phenoxyethylammonium (POEA), are studied. Owing to narrow phase distribution, efficient energy funneling, and low trap density, the POEA-based RPP films enable efficient red PeLEDs with a peak external quantum efficiency of 10.3%, a maximum brightness of 1052 cd m−2, and excellent spectral stability. Significantly, the electroluminescence spectrum represents CIE 1931 color coordinates of (0.71, 0.29), which meets the recommendation 2020 standard (0.708, 0.292). The findings provide useful guidelines for the rational design of new organic spacer cations for RPPs with high performance. Agency for Science, Technology and Research (A*STAR) Published version This work is supported by the Agency For Science, Technology and Research (A*STAR), Singapore, under the National Robotics Program (NRP)-Robotics Domain Specific (RDS: Ref. [1922200001]). 2023-02-07T07:07:32Z 2023-02-07T07:07:32Z 2023 Journal Article Qing, J., Ramesh, S., Liu, X., Wang, H., Yu, H., Kuang, C., Hou, L., Zhang, W., Sum, T. C. & Gao, F. (2023). Spacer cation engineering in Ruddlesden-Popper perovskites for efficient red light-emitting diodes with recommendation 2020 color coordinates. Applied Surface Science, 616, 156454-. https://dx.doi.org/10.1016/j.apsusc.2023.156454 0169-4332 https://hdl.handle.net/10356/164634 10.1016/j.apsusc.2023.156454 616 156454 en NRP-RDS-1922200001 Applied Surface Science 10.21979/N9/X7TPFO © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). application/pdf |
| spellingShingle | Science::Physics Perovskite Light-Emitting Diode Photoluminescence Transient Absorption Spectroscopy Qing, Jian Ramesh, Sankaran Liu, Xiao-Ke Wang, Heyong Yu, Hongling Kuang, Chaoyang Hou, Lintao Zhang, Wenjing Sum, Tze Chien Gao, Feng Spacer cation engineering in Ruddlesden-Popper perovskites for efficient red light-emitting diodes with recommendation 2020 color coordinates |
| title | Spacer cation engineering in Ruddlesden-Popper perovskites for efficient red light-emitting diodes with recommendation 2020 color coordinates |
| title_full | Spacer cation engineering in Ruddlesden-Popper perovskites for efficient red light-emitting diodes with recommendation 2020 color coordinates |
| title_fullStr | Spacer cation engineering in Ruddlesden-Popper perovskites for efficient red light-emitting diodes with recommendation 2020 color coordinates |
| title_full_unstemmed | Spacer cation engineering in Ruddlesden-Popper perovskites for efficient red light-emitting diodes with recommendation 2020 color coordinates |
| title_short | Spacer cation engineering in Ruddlesden-Popper perovskites for efficient red light-emitting diodes with recommendation 2020 color coordinates |
| title_sort | spacer cation engineering in ruddlesden popper perovskites for efficient red light emitting diodes with recommendation 2020 color coordinates |
| topic | Science::Physics Perovskite Light-Emitting Diode Photoluminescence Transient Absorption Spectroscopy |
| url | https://hdl.handle.net/10356/164634 |
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