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Bright, multicoloured light-emitting diodes based on quantum dots
文献类型：期刊论文
| 作者 | Sun, Qingjiang; Wang, Y. Andrew; Li, Lin Song; Wang, Daoyuan; Zhu, Ting; Xu, Jian; Yang, Chunhe; Li, Yongfang |
| 刊名 | NATURE PHOTONICS
 |
| 出版日期 | 2007-12-01 |
| 卷号 | 1期号:12页码:717-722 |
| ISSN号 | 1749-4885 |
| 英文摘要 | Quantum-dot-based LEDs are characterized by pure and saturated emission colours with narrow bandwidth, and their emission wavelength is easily tuned by changing the size of the quantum dots. However, the brightness, efficiency and lifetime of LEDs need to be improved to meet the requirements of commercialization in the near future. Here, we report red, orange, yellow and green LEDs with maximum luminance values of 9,064, 3,200, 4,470 and 3,700 cd m(-2), respectively, the highest values reported so far. Solution-processable core-shell quantum dots with a CdSe core and a ZnS or CdS/ZnS shell were used as emissive layers in the devices. By optimizing the thicknesses of the constituent layers of the devices, we were able to develop quantum-dot-based LEDs with improved electroluminescent efficiency (1.1-2.8 cd A(-1)), low turn-on voltages ( 3-4 V) and long operation lifetimes. These findings suggest that such quantum-dot-based LEDs will be promising for use in flat-panel displays. |
| 语种 | 英语 |
| 出版者 | NATURE PUBLISHING GROUP |
| WOS记录号 | WOS:000251282800015 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/60431]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Yongfang |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China 2.Univ Arkansas, Ocean NanoTech, Fayetteville, AR 72701 USA 3.Penn State Univ, Dept Engn Sci & Mech, University Pk, PA 16802 USA |
| 推荐引用方式 GB/T 7714 | Sun, Qingjiang,Wang, Y. Andrew,Li, Lin Song,et al. Bright, multicoloured light-emitting diodes based on quantum dots[J]. NATURE PHOTONICS,2007,1(12):717-722. |
| APA | Sun, Qingjiang.,Wang, Y. Andrew.,Li, Lin Song.,Wang, Daoyuan.,Zhu, Ting.,...&Li, Yongfang.(2007).Bright, multicoloured light-emitting diodes based on quantum dots.NATURE PHOTONICS,1(12),717-722. |
| MLA | Sun, Qingjiang,et al."Bright, multicoloured light-emitting diodes based on quantum dots".NATURE PHOTONICS 1.12(2007):717-722. |
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来源：化学研究所
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