Synthesis of blue luminescent Si nanoparticles using atmospheric-pressure microdischarges

被引：180

作者：

Sankaran, RM ^{[1
]}

Holunga, D ^{[1
]}

Flagan, RC ^{[1
]}

Giapis, KP ^{[1
]}

机构：

[1] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA

来源：

NANO LETTERS | 2005年 / 5卷 / 03期

关键词：

D O I：

10.1021/nl0480060

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Silicon nanoparticles are synthesized from a mixture of argon/silane in a continuous flow atmospheric-pressure microdischarge reactor. Particles nucleate and grow to a few nanometers (1-3 nm) in diameter before their growth is abruptly terminated in the short residence time microreactor. Narrow size distributions are obtained as inferred from size classification and imaging. As-grown Si nanoparticles collected in solution exhibit room-temperature photoluminescence that peaks at 420 nm with a quantum efficiency of 30%; the emission is stable for months in ambient air.

引用

页码：537 / 541

页数：5

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