Quantum dots (QDs) as emerging light-converting materials show the advantage of enhancing color quality of white light-emitting diode (WLED). However, WLEDs employing narrow-emitting monochromic QDs usually present unsatisfactory color rendering in the orange region. Herein, composite orange-red QDs (composite-QDs) are developed through mixing CdSe/ZnS-based orange QDs (O-QDs) and red QDs (R-QDs) to compensate the orange-red light for WLEDs. We investigated the effect of self-absorption and fluorescence resonance energy transfer (FRET) process in composite-QDs on the spectral controllability and fluorescent quenching in WLEDs. The concentration and donor/acceptor ratios were also taken into account to analyze the FRET efficiency and help identify suitable composite-QDs for color compensation in the orange-red light region. As the result, the optimized composite-QDs effectively improve the color rendering index of the WLED compared with monochromatic QDs.

中文翻译：

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WLED应用中橙红色量子点复合色补偿效应的研究。

作为新兴的光转换材料的量子点（QD）具有增强白色发光二极管（WLED）的颜色质量的优势。但是，采用窄发射单色QD的WLED通常在橙色区域呈现不令人满意的显色性。在此，通过混合基于CdSe / ZnS的橙色QD（O-QDs）和红色QD（R-QDs）来开发复合橙红色QD（复合QD），以补偿WLED的橙红色光。我们研究了复合QD中自吸收和荧光共振能量转移（FRET）过程对WLED的光谱可控性和荧光猝灭的影响。还考虑了浓度和供体/受体比率，以分析FRET效率，并帮助确定合适的复合QD用于橙红光区域中的颜色补偿。作为结果，