LOW-FREQUENCY SERS FROM AG COLLOIDS IN ALKALI-HALIDE CRYSTALS

被引：7

作者：

ABEL, HB

机构：

[1] Physikalisches Institut, Universität Münster

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1990年 / 161卷 / 01期

关键词：

D O I：

10.1002/pssb.2221610144

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Thermally and photochemically prepared Ag colloids in various alkali halides show a low‐frequency mode (LFM) between 3 and 8 cm−1. By stepwise annealing the crystal the LFM band maximum is shifted to lower wave numbers. The average size of the Ag colloids is determined from the LFM spectrum. The independence of the LFM on the polarization of the exciting laser light indicates predominantly spherically shaped Ag colloids. The influence of temperature on the LFM is investigated both, on Stokes and anti‐Stokes side. After dividing the LFM intensities by the Bose function the reduced SERS signal is found to be temperature independent and mirror symmetric concerning the Stokes shift. Copyright © 1990 WILEY‐VCH Verlag GmbH & Co. KGaA

引用

页码：435 / 445

页数：11

共 17 条

[1] ADDITIONAL RESULTS ON SERS FROM AG COLLOIDS IN ALKALI-HALIDE CRYSTALS [J].