硅
化学
纳米颗粒
光致发光
纳米技术
蚀刻(微加工)
纳米晶
光电子学
化学物理
材料科学
有机化学
图层(电子)
作者
Jörg Martin,Frank Cichos,Iu Y. Chan,F. Huisken,Christian von Borczyskowski
标识
DOI:10.1560/wbd9-dn73-kehx-8dnl
摘要
Abstract Silicon nanocrystals have been prepared from gas‐phase pyrolysis and electrochemical etching of silicon. Confocal and wide‐field optical microscopy have been performed on size‐selected ensembles and single silicon nanocrystals. Single particles exhibit photoluminescence blinking effects that are interrelated with photo‐induced (reversible) bleaching effects of the ensemble. The blinking dynamics follow a power law statistic of on‐ and off‐times, revealing that even single nanoparticles are subject to strong disorder effects. This is supported by optically detected magnetic resonance (ODMR) experiments on silicon nanoparticles achieved for the first time via microscopic techniques.
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