Non-Toxic Gold Nanoclusters for Solution-Processed White Light-Emitting Diodes

Yu Chiang Chao*, Kai Ping Cheng, Ching Yi Lin, Yu Li Chang, Yi Yun Ko, Tzu Yin Hou, Cheng Yi Huang, Walter H. Chang, Cheng An J. Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


Solution-processed optoelectronic devices are attractive because of the potential low-cost fabrication and the compatibility with flexible substrate. However, the utilization of toxic elements such as lead and cadmium in current optoelectronic devices on the basis of colloidal quantum dots raises environmental concerns. Here we demonstrate that white-light-emitting diodes can be achieved by utilizing non-toxic and environment-friendly gold nanoclusters. Yellow-light-emitting gold nanoclusters were synthesized and capped with trioctylphosphine. These gold nanoclusters were then blended with the blue-light-emitting organic host materials to form the emissive layer. A current efficiency of 0.13 cd/A was achieved. The Commission Internationale de l’Eclairage chromaticity coordinates of (0.27, 0.33) were obtained from our experimental analysis, which is quite close to the ideal pure white emission coordinates (0.33, 0.33). Potential applications include innovative lighting devices and monitor backlight.

Original languageEnglish
Article number8860
JournalScientific reports
Issue number1
Publication statusPublished - 2018 Dec 1

ASJC Scopus subject areas

  • General


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