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DOI | 10.1038/s41467-018-07206-w |
Color-stable highly luminescent sky-blue perovskite light-emitting diodes | |
Xing, Jun1,2,8; Zhao, Yongbiao3; Askerka, Mikhail2; Quan, Li Na2; Gong, Xiwen2; Zhao, Weijie1; Zhao, Jiaxin1; Tan, Hairen2; Long, Guankui2; Gao, Liang2,4,5; Yang, Zhenyu2; Voznyy, Oleksandr2; Tang, Jiang4,5; Lu, Zheng-Hong3; Xiong, Qihua1,6,7; Sargent, Edward H.2 | |
2018-08-30 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2018 |
卷号 | 9 |
文章类型 | Article |
语种 | 英语 |
国家 | Singapore; Canada; Peoples R China |
英文摘要 | Perovskite light-emitting diodes (PeLEDs) have shown excellent performance in the green and near-infrared spectral regions, with high color purity, efficiency, and brightness. In order to shift the emission wavelength to the blue, compositional engineering (anion mixing) and quantum-confinement engineering (reduced-dimensionality) have been employed. Unfortunately, LED emission profiles shift with increasing driving voltages due to either phase separation or the coexistence of multiple crystal domains. Here we report color-stable sky-blue PeLEDs achieved by enhancing the phase monodispersity of quasi-2D perovskite thin films. We selected cation combinations that modulate the crystallization and layer thickness distribution of the domains. The perovskite films show a record photoluminescence quantum yield of 88% at 477 nm. The corresponding PeLEDs exhibit stable sky-blue emission under high operation voltages. A maximum luminance of 2480 cd m(-2) at 490 nm is achieved, fully one order of magnitude higher than the previous record for quasi-2D blue PeLEDs. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000443155900001 |
WOS关键词 | ORGANOMETAL HALIDE PEROVSKITE ; SOLAR-CELLS ; LAYERED PEROVSKITES ; HYBRID PEROVSKITE ; EFFICIENT ; ELECTROLUMINESCENCE ; NANOPLATELETS ; FILMS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204076 |
专题 | 资源环境科学 |
作者单位 | 1.Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore; 2.Univ Toronto, Dept Elect & Comp Engn, 10 Kings Coll Rd, Toronto, ON M5S 3G4, Canada; 3.Univ Toronto, Dept Mat Sci & Engn, 184 Coll St, Toronto, ON M5S 3E4, Canada; 4.HUST, WNLO, Wuhan 430074, Hubei, Peoples R China; 5.HUST, Sch Opt & Elect Informat, Wuhan 430074, Hubei, Peoples R China; 6.Nanyang Technol Univ, Sch Elect & Elect Engn, Nanoelect Ctr Excellence, NOVITAS, Singapore 639798, Singapore; 7.CNRS UNS NUS NTU, Int Joint Res Unit, MajuLab, UMI 3654, Singapore 639798, Singapore; 8.NPU, SIFE, 127 West Youyi Rd, Xian 710072, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Xing, Jun,Zhao, Yongbiao,Askerka, Mikhail,et al. Color-stable highly luminescent sky-blue perovskite light-emitting diodes[J]. NATURE COMMUNICATIONS,2018,9. |
APA | Xing, Jun.,Zhao, Yongbiao.,Askerka, Mikhail.,Quan, Li Na.,Gong, Xiwen.,...&Sargent, Edward H..(2018).Color-stable highly luminescent sky-blue perovskite light-emitting diodes.NATURE COMMUNICATIONS,9. |
MLA | Xing, Jun,et al."Color-stable highly luminescent sky-blue perovskite light-emitting diodes".NATURE COMMUNICATIONS 9(2018). |
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