Journal
APPLIED PHYSICS LETTERS
Volume 89, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2268706
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Field effect induced luminescence has been achieved by alternate tunnel injection of electrons and holes into Si nanocrystals. The emitting device is a metal-oxide-semiconductor structure with a semitransparent polycrystalline Si contact similar to 250 nm thick and a silicon-rich silicon oxide layer of about 40 nm deposited on a p-type Si substrate by plasma-enhanced chemical vapor deposition. The electroluminescence is optimized for a Si excess of 17% and annealing at 1250 degrees C for 1 h in nitrogen-rich atmosphere. The pulsed emission presents typical decay times of similar to 5 mu s and external quantum efficiencies of similar to 0.03%.
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