Journal
NANOSCALE
Volume 7, Issue 20, Pages 9140-9146Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr01332a
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Funding
- 3M Non-Tenured Faculty Award
- National Defense Science and Engineering Graduate (NDSEG) Fellowship (Air Force Office of Scientific Research) [32 CFR 168a]
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886]
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Here we investigate the photophysical properties of Au(0)@Au(I)-thiolate nanoclusters by controlling the degree of aggregation, and measure electrochemical energy levels to design a metal nanocluster-based thin film LED (MNC-LED) structure. These efforts allow us to implement MNC-LEDs with luminance exceeding 40 cd m(-2) and external quantum efficiency exceeding 0.1% with clearly visible orange emission. It is also demonstrated that by varying the sizes of nanoclusters, the electroluminescence spectrum of the device can be tuned to the infrared emission, indicating the possibility of exploiting metal nanocluster emitters for use over a wide spectral range.
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