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Title: White-blue electroluminescence from a Si quantum dot hybrid light-emitting diode

A silicon (Si) quantum dot (QD)-based hybrid inorganic/organic light-emitting diode (LED) was fabricated via solution processing. This device exhibited white-blue electroluminescence at a low applied voltage of 6 V, with 78% of the effective emission obtained from the Si QDs. This hybrid LED produced current and optical power densities 280 and 350 times greater than those previously reported for such device. The superior performance of this hybrid device was obtained by both the prepared Si QDs and the optimized layer structure and thereby improving carrier migration through the hybrid LED and carrier recombination in the homogeneous Si QD layer.
Authors:
;  [1] ;  [1] ;  [2]
  1. Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-hiroshima 739-8526 (Japan)
  2. (N-BARD), Hiroshima University, Higashi-hiroshima 739-8526 (Japan)
Publication Date:
OSTI Identifier:
22402447
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 20; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTROLUMINESCENCE; HYBRIDIZATION; LAYERS; LIGHT EMITTING DIODES; QUANTUM DOTS; RECOMBINATION; SILICON