Details

Autor(en) / Beteiligte

• Koh, T.-W
• Hiszpanski, A. M
• Sezen, M
• Naim, A
• Galfsky, T
• Trivedi, A
• Loo, Y.-L
• Menon, V
• Rand, B. P

Titel

Metal nanocluster light-emitting devices with suppressed parasitic emission and improved efficiency: exploring the impact of photophysical propertiesElectronic supplementary information (ESI) available. See DOI: 10.1039/c5nr01332a

Erscheinungsjahr

2015-05

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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. Nanoclusters with different degrees of aggregation are synthesized and their electrochemical energy levels are measured to implement light-emitting devices with luminance >40 cd m −2 and EQE >0.1%, with suppressed parasitic emission.