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Progress on Modulation Bandwidth of Quantum-dot LED in Visible Light Communication
增强出版- Chinese Journal of Luminescence Vol. 43, Issue 4, Pages: 598-607(2022)
- 作者机构：
1.广东海洋大学 电子与信息工程学院，广东 湛江 524000
2.广东海洋大学深圳研究院 科技发展中心，广东 深圳 518120
3.南方科技大学工学院 电子与电气工程系，广东 深圳 518055
- 作者简介：
- 基金信息：National Natural Science Foundation of China(61875082);Supported by Youth Talent Program by Education Department of Guangdong Province(2020KQCX026)
DOI：10.37188/CJL.20220041
CLC：
扫 描 看 全 文
Hua XIAO, Wan-li CHEN, Xiang-tian XIAO, et al. Progress on Modulation Bandwidth of Quantum-dot LED in Visible Light Communication. [J]. Chinese Journal of Luminescence 43(4):598-607(2022)
Hua XIAO, Wan-li CHEN, Xiang-tian XIAO, et al. Progress on Modulation Bandwidth of Quantum-dot LED in Visible Light Communication. [J]. Chinese Journal of Luminescence 43(4):598-607(2022) DOI： 10.37188/CJL.20220041.
摘要
可见光通信(Visible light communication,VLC)作为无线通信领域中与无线射频通信互补的一种空间通信技术，近年来吸引了众多研究人员的关注。除了通信链路的电路设计、调制模式之外，调制带宽是照明光源能否实现高质量VLC的关键因素。区别于传统有机LED、聚合物LED及以GaN/InGaN为代表的无机LED等照明光源，量子点LED(QLED)具备响应速度快、色纯度好、发光效率高、可同时用于光致发光和电致发光等优势，是一种理想的用于可见光通信的固态光源器件。然而，目前对QLED用于VLC的调制带宽机理研究较少，尤其是针对多色QLED以及电致发光QLED。本文从量子点的光转换机制出发，系统综述了不同QLED的调制机理，并对光致发光和电致发光QLED调制带宽的限制因素进行了总结和分析，为QLED在VLC中的应用提供了理论依据。
Abstract
As one of the wireless communication technologies, visible light communication(VLC) acts as a complement to radio frequency communication, and has attracted many researchers' attention in recent years. Except for electrical circuit designing and modulation mode designing in communication links, modulation bandwidth is one of the key factors to realize high-quality VLC. Different from traditional organic LEDs, polymer LEDs, and inorganic LEDs(such as GaN/InGaN LEDs), quantum-dot LEDs(QLEDs) show fast response, high color purity, high luminous efficiency, and they can realize photoluminescence and electroluminescence simultaneously. QLED is an ideal solid-state light source for VLC, however, literatures seldom report the mechanism of modulation bandwidth of QLED in VLC, especially the modulation bandwidth of multi-color QLED and electroluminescent QLED. Based on the light conversion mechanism of quantum dots, we systematically review the modulation mechanism of different QLEDs, and analyze the limitation of the modulation bandwidth of photoluminescence and electroluminescence QLEDs. This study lays the theoretical foundation for the application of QLEDs in VLC.
关键词
可见光通信发光二极管量子点调制带宽
Keywords
visible light communicationlight-emitting diodequantum dotmodulation bandwidth
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