White-light-emitting Liquefiable Silicon Nanocrystals

被引：14

作者：

Ghosh, Batu ^{[1
]}

Ogawara, Makoto ^{[2
,3
]}

Sakka, Yoshio ^{[2
,3
]}

Shirahata, Naoto ^{[1
,3
,4
]}

机构：

[1] NIMS, World Premier Int Res Ctr Initiat Mat Nanoarchite, Tsukuba, Ibaraki 3050044, Japan

[2] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3050047, Japan

[3] NIMS, Tsukuba, Ibaraki 3050047, Japan

[4] Japan Sci & Technol Agcy JST, Precursory Res Embryon Sci & Technol PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

CHEMISTRY LETTERS | 2012年 / 41卷 / 10期

关键词：

MICROEMULSION SYNTHESIS; SI NANOPARTICLES; QUANTUM DOTS; PHOTOLUMINESCENT; MONOLAYERS; DIODE;

D O I：

10.1246/cl.2012.1157

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

White-light-emitting silicon nanocrystals (Si NCs) have been prepared from Si powder through a facile route including HF-HCl etching. Owing to a broad size distribution, the light emission spectrum covers the whole visible wavelength range with full width at half-maximum (FWHM) of 230 nm. Covalent attachment of octyl monolayers to the Si surface changes the physical nature of the NCs from a solid into a solvent-free liquid, and affords them high thermal stability of photoluminescence (PL) even under ambient conditions.

引用

页码：1157 / 1159

页数：3

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