Computational study of power conversion and luminous efficiency performance for semiconductor quantum dot nanophosphors on light-emitting diodes

Optics Express
Talha ErdemHilmi Volkan Demir

Abstract

We present power conversion efficiency (PCE) and luminous efficiency (LE) performance levels of high photometric quality white LEDs integrated with quantum dots (QDs) achieving an averaged color rendering index of ≥90 (with R9 at least 70), a luminous efficacy of optical radiation of ≥380 lm/W(opt) a correlated color temperature of ≤4000 K, and a chromaticity difference dC <0.0054. We computationally find that the device LE levels of 100, 150, and 200 lm/W(elect) can be achieved with QD quantum efficiency of 43%, 61%, and 80% in film, respectively, using state-of-the-art blue LED chips (81.3% PCE). Furthermore, our computational analyses suggest that QD-LEDs can be both photometrically and electrically more efficient than phosphor based LEDs when state-of-the-art QDs are used.

Citations

Dec 17, 2015·Nanoscale·Chin-Wei SherHao-Chung Kuo
Apr 20, 2012·Optics Express·Ping ZhongMinhao Zhang
Apr 11, 2013·Optics Express·Snjezana Soltic, Andrew Chalmers
Jul 15, 2016·Optics Express·Jiun-Yi LienSue-Lein Wang
Oct 4, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Mohamed Abdel-SalamKwang-Hyun Baek

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