Light induced diffusion driven self assembly of Ag nanoparticles in a-Se/Ag bi-layer thin film with ultrafast optical response

被引：21

作者：

Bapna, Mukund ^{[1
]}

Sharma, Rituraj ^{[1
]}

Barik, A. R. ^{[1
]}

Khan, Pritam ^{[1
]}

Kumar, Rakesh Ranjan ^{[1
]}

Adarsh, K. V. ^{[1
]}

机构：

[1] Indian Inst Sci Educ & Res, Dept Phys, Bhopal 462023, India

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 21期

关键词：

SILVER NANOPARTICLES; RELAXATION;

D O I：

10.1063/1.4807934

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this Letter, we demonstrate that femtosecond light-induced interdiffusion of Ag driven by the electrostatic attraction between photo-excited Ag+ ions and negatively charged amorphous layer can act as an efficient single step method for hybrid integration of spatially ordered and interconnected nanoparticles on the surface of amorphous films. Such self assembled complex hybrid structures of silver nanoparticles via bottom-up nano-construction method on a-Se thin film show an ultrafast optical response over an unusually broad wavelength range that can be used to construct optical modulators operating at switching speed of similar to 5 ps. (C) 2013 AIP Publishing LLC.

引用

页数：4

共 26 条

[1] SILVER PHOTODISSOLUTION IN AMORPHOUS-CHALCOGENIDE THIN-FILMS [J].