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DOI | 10.1038/s41467-018-02871-3 |
Efficient green light-emitting diodes based on quasi-two-dimensional composition and phase engineered perovskite with surface passivation | |
Yang, Xiaolei1,2; Zhang, Xingwang1,3; Deng, Jinxiang2; Chu, Zema1; Jiang, Qi1,3; Meng, Junhua1,3; Wang, Pengyang1,3; Zhang, Liuqi1,3; Yin, Zhigang1,3; You, Jingbi1,3 | |
2018-02-08 | |
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 | Peoples R China |
英文摘要 | Perovskite light-emitting diodes (LEDs) are attracting great attention due to their efficient and narrow emission. Quasi-two-dimensional perovskites with Ruddlesden-Popper-type layered structures can enlarge exciton binding energy and confine charge carriers and are considered good candidate materials for efficient LEDs. However, these materials usually contain a mixture of phases and the phase impurity could cause low emission efficiency. In addition, converting three-dimensional into quasi-two-dimensional perovskite introduces more defects on the surface or at the grain boundaries due to the reduction of crystal sizes. Both factors limit the emission efficiency of LEDs. Here, firstly, through composition and phase engineering, optimal quasi-two-dimensional perovskites are selected. Secondly, surface passivation is carried out by coating organic small molecule trioctylphosphine oxide on the perovskite thin film surface. Accordingly, green LEDs based on quasi-two-dimensional perovskite reach a current efficiency of 62.4 cd A(-1) and external quantum efficiency of 14.36%. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000424451300015 |
WOS关键词 | BRIGHTLY LUMINESCENT ; NANOCRYSTALS ; PHOTOLUMINESCENCE ; BR ; CL ; TRANSPORT ; EMISSION ; CELLS |
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/203666 |
专题 | 资源环境科学 |
作者单位 | 1.Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, Beijing 100083, Peoples R China; 2.Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China; 3.Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Xiaolei,Zhang, Xingwang,Deng, Jinxiang,et al. Efficient green light-emitting diodes based on quasi-two-dimensional composition and phase engineered perovskite with surface passivation[J]. NATURE COMMUNICATIONS,2018,9. |
APA | Yang, Xiaolei.,Zhang, Xingwang.,Deng, Jinxiang.,Chu, Zema.,Jiang, Qi.,...&You, Jingbi.(2018).Efficient green light-emitting diodes based on quasi-two-dimensional composition and phase engineered perovskite with surface passivation.NATURE COMMUNICATIONS,9. |
MLA | Yang, Xiaolei,et al."Efficient green light-emitting diodes based on quasi-two-dimensional composition and phase engineered perovskite with surface passivation".NATURE COMMUNICATIONS 9(2018). |
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