INFRARED REFLECTANCE SPECTRA OF SB-DOPED SNO2 CERAMICS

被引：7

作者：

RASTOMJEE, CS

COX, PA

EGDELL, RG

KEMP, JP

FLAVELL, WR

机构：

[1] UNIV OXFORD, S PARKS RD, OXFORD OX1 3QR, ENGLAND

[2] UNIV MANCHESTER, INST SCI & TECHNOL, DEPT CHEM, MANCHESTER M60 1QD, LANCS, ENGLAND

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1991年 / 1卷 / 03期

关键词：

ANTIMONY-DOPED TIN OXIDE CERAMIC; INFRARED REFLECTION SPECTROSCOPY; DEPLETION LAYER;

D O I：

10.1039/jm9910100451

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Infrared specular reflectance spectra of Sn(1-x)Sb(x)O2 ceramics have been measured over a range of bulk doping levels extending up to x = 0.03. At low doping levels conduction electrons screen out coupling of the infrared radiation to bulk phonon modes in a way expected from a model in which reflectivity is calculated from the bulk dielectric function. However, at higher doping levels a reflectivity minimum develops at ca. 800 cm-1. This is interpreted in terms of a model where a surface layer with low carrier concentration sits on top of an undepleted bulk.

引用

页码：451 / 455

页数：5