QUANTUM-SIZE EFFECTS IN NANOCRYSTALLINE SEMICONDUCTING TIO2 LAYERS PREPARED BY ANODIC OXIDATIVE HYDROLYSIS OF TICL3

被引：160

作者：

KAVAN, L

STOTO, T

GRATZEL, M

FITZMAURICE, D

SHKLOVER, V

机构：

[1] SWISS FED INST TECHNOL,CH-1015 LAUSANNE,SWITZERLAND

[2] SWISS FED INST TECHNOL,CH-8092 ZURICH,SWITZERLAND

[3] NATL UNIV IRELAND UNIV COLL DUBLIN,DUBLIN 4,IRELAND

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 37期

关键词：

D O I：

10.1021/j100139a038

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：

The TiO2 layers prepared by anodic oxidative hydrolysis of TiCl3 on electrically conducting supports (Pt, C, SnO2, etc.) consist of extremely small particles (1-2 nm), partly crosslinked into 2-30-nm big aggregates. Particle size influences the UV absorption spectra, flatband potential, and anodic photocurrent action spectra as expected for size-quantization effects. Upon heating, the particles grew, but if the layer thickness is below ca. 30-100 nm, size effects remain apparent even after annealing at 450-degrees-C.

引用

页码：9493 / 9498

页数：6