Optical and structural changes of silver nanoparticles during photochromic transformation

被引：46

作者：

Dahmen, C ^{[1
]}

Sprafke, AN ^{[1
]}

Dieker, H ^{[1
]}

Wuttig, M ^{[1
]}

von Plessen, G ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Phys 1, D-52056 Aachen, Germany

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 01期

关键词：

D O I：

10.1063/1.2163268

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Silver nanoparticles embedded in titanium oxide change their color upon irradiation with visible light. Here we investigate the origin of this photochromic effect. The color change is found to result chiefly from a reduction of the optical extinction peak of the photoexcited particle plasmons. From a comparison with x-ray diffraction experiments, we conclude that this reduction is caused by a photoinduced decrease of the mean size of the silver nanocrystals. (c) 2006 American Institute Physics.

引用

页数：3

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