制作
材料科学
光电子学
原位
钙钛矿(结构)
环境科学
计算机科学
工程类
物理
气象学
化学工程
医学
病理
替代医学
作者
Tianliang Yao,Zhi Yang,Linyuan Gu,Ji‐Song Yao,Shalong Wang,Wenxuan Fan,Yingyi Nong,Jizhong Song
标识
DOI:10.1002/lpor.202400758
摘要
Abstract Designing fast‐response and efficient color converter is of significance for indoor white light‐emitting diode (WLED) lighting and visible light communication (i.e., Light Fidelity, LiFi) application. Green‐emitting CsPbBr 3 quantum dots combined with red organic emitters are promising candidates. However, organic emitters cannot offer an adequate red emission intensity when they have a low weight fraction in the color converter. Herein, a multi‐site contacted CsPbBr 3 /organic color converter is fabricated with an efficient red emission via an in situ solid‐phase fabrication technique. It is found that the multi‐site contacted color converter has a 2.1 times higher red emission intensity compared to the physically mixed hybrid due to a more efficient energy transfer from CsPbBr 3 to organic emitters. Resultantly, the multi‐site contacted WLED exhibits a color rendering index (CRI) of 86 and a luminous efficacy (LE) of 100 lm W −1 , which are much higher than the physically mixed hybrid with a CRI of 49 and a LE of 60 lm W −1 . In addition, WLEDs present a superior visible light communication capability, evidenced by an opened‐eye diagram at the data rate of 5 Mbps. This study indicates the design and fabrication of perovskite/organic color converter are significant for constructing efficient and fast‐response WLEDs for the indoor LiFi application.
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