OPTICAL-ABSORPTION STUDIES IN MOLYBDENUM TRIOXIDE THIN-FILMS

Authors
SABHAPATHI VK HUSSAIN OM REDDY PS REDDY KTR UTHANNA S NAIDU BS REDDY PJ
Citation
Vk. Sabhapathi et al., OPTICAL-ABSORPTION STUDIES IN MOLYBDENUM TRIOXIDE THIN-FILMS, Physica status solidi. a, Applied research, 148(1), 1995, pp. 167-173
Citations number
18
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica status solidi. a, Applied research → ACNP
ISSN journal
00318965
Volume
148
Issue
1
Year of publication
1995
Pages
167 - 173
Database
ISI
SICI code
0031-8965(1995)148:1<167:OSIMTT>2.0.ZU;2-8
Abstract
Thin films of molybdenum trioxide are prepared by the electron beam ev aporation technique onto glass substrates maintained at temperatures i n the range 303 to 523 K. The effect of substrate temperature and oxyg en partial pressure on the structure and optical properties of MoO3 fi lms is investigated. The as-deposited films show alpha-beta mixed phas e. Both the films formed at 523 K in an oxygen partial pressure of 26. 6 x 10(-3) Pa and the films formed at 523 K and heat treated in air ex hibit the orthorhombic alpha-phase with optical band gap 3.25 and 3.2 eV, respectively.