Low-temperature synthesis of Ge nanocrystals in zeolite Y

被引：21

作者：

Miguez, H ^{[1
]}

Fornes, V ^{[1
]}

Meseguer, F ^{[1
]}

Marquez, F ^{[1
]}

Lopez, C ^{[1
]}

机构：

[1] CSIC,INST CIENCIA MAT,E-28049 MADRID,SPAIN

来源：

APPLIED PHYSICS LETTERS | 1996年 / 69卷 / 16期

关键词：

D O I：

10.1063/1.117520

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A method for obtaining Ge nanocrystals has been developed using the porous structure of zeolite Y as a matrix. Samples were obtained by reduction of GeO2 nanocrystals, previously grown in zeolite alpha cages, in H-2 at 470 degrees C. This is apparently the lowest GeO2 reduction temperature reported and is probably due to the influence of the host. Ge crystallites so formed present an absorption edge at 2.2 eV, which is shifted similar to 1.4 eV with respect to the bulk value, A softening and an asymmetric broadening of the Raman peak were also observed. We can estimate an average diameter of 3 nm for the, Ge nanocrystals from both results. (C) 1996 American Institute of Physics.

引用

页码：2347 / 2349

页数：3

共 17 条

[11] VISIBLE PHOTOLUMINESCENCE OF GE MICROCRYSTALS EMBEDDED IN SIO2 GLASSY MATRICES [J].