Optical properties of dip coated titanium-di-oxide (TiO2) thin films annealed at different temperatures

被引：8
作者：
Biswas, Sayari [1 ]
Kar, Asit Kumar [1 ]
机构：
[1] Indian Sch Mines, Indian Inst Technol, Micro & Nanosci Lab, Dept Appl Phys, Dhanbad 826004, Jharkhand, India
来源：
MATERIALS RESEARCH EXPRESS | 2018年 / 5卷 / 02期
关键词：
TiO2 thin film; autoclaved sol; hydrothermal method; dip coating; REACTIVE EVAPORATION; ACID-SOLUTION; SOL; PHOTOCATALYST; MORPHOLOGY; OXIDATION;
D O I：
10.1088/2053-1591/aaad8c
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Titanium dioxide (TiO2) thin films were synthesized by hydrothermal assisted sol-gel dip coating method on quartz substrate. The sol was prepared by hydrothermal method at 90 degrees C. Dip coating method was used to deposit the thin films. Later films were annealed at four different temperatures - 600 degrees C, 800 degrees C, 1000 degrees C and 1200 degrees C. XRD study showed samples annealed at 600 degrees Care almost amorphous. At 800 degrees C, film turns into anatase phase and with further increment of annealing temperature they turn into rutile phase. Transmission spectra of thin films show sharp rise in the violet-ultraviolet transition region and a maximum transmittance of similar to 60% was observed in the visible region for the sample annealed at the lowest temperature. Band gap of the prepared films varies from 2.9 eV to 3.5 eV.
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页数：6
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