TITLE:
Fabrication of High Color Rendering Index White Light Emitting Diodes from Gold Nanoclusters
AUTHORS:
Yeeu-Chang Lee, Chieh Chen, Cheng-An J. Lin, Cheng-Yi Huang, Chia-Hui Lin
KEYWORDS:
Gold Nanocluster, White Light Emitting Diodes, Color Rendering Index, Color Temperature
JOURNAL NAME:
Optics and Photonics Journal,
Vol.13 No.11,
November
30,
2023
ABSTRACT: We demonstrated gold nanoclusters as color tunable emissive light converters for the application of white light emitting diodes (WLEDs). A blue LED providing 460 nm to excite gold nanoclusters mixed with UV curable material generates broad bandwidth emission at the visible range. Increasing the amount of gold nanoclusters, the correlated color temperature of WLEDs tuned from cold white to warm white, and also results in the variation of color rendering index (CRI). The highest CRI in the experiment is 92.