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Fabrication of n-TiO2 hollow spheres monolayer-based UV detectors with different-sized nanospheres

Title
Fabrication of n-TiO2 hollow spheres monolayer-based UV detectors with different-sized nanospheres
Author
박진섭
Keywords
n-TiO2; photodetector; nanosphere monolayer; transferable film
Issue Date
2018-11
Publisher
IOP PUBLISHING LTD
Citation
SEMICONDUCTOR SCIENCE AND TECHNOLOGY, v. 33, no. 12, Article no. 125018
Abstract
In this paper, we report on an ultraviolet (UV) photodetector based on a pn junction structure hollow anatase n-TiO2 nanosphere monolayer film on a p-GaN template. In order to form and transfer the well-arrayed hollow TiO2 nanosphere monolayer film onto polydimethylsiloxane (PDMS), a facile rubbing method and polyvinyl alcohol (PVA) aqueous solution was used. To investigate the effects of different-sized hollow TiO2 nanospheres, anatase-TiO2 spheres of various diameters were prepared by combining template synthesis and thermal treatment. The responsiveness of the fabricated UV photodetectors using anatase n-TiO2 monolayer/p-GaN was increased from 0.17 to 0.21 A W-1 upon reducing the size of the anatase-phased hollow n-TiO2 spheres from 660 to 360 nm. Our suggested transferable anatase-TiO2 monolayer film is a new n-type single-layer material for electronic and optical device fields developed through the universal usage of displaceable material for targeted hetero-templates.
URI
https://iopscience.iop.org/article/10.1088/1361-6641/aaeb78http://repository.hanyang.ac.kr/handle/20.500.11754/120571
ISSN
0268-1242; 1361-6641
DOI
10.1088/1361-6641/aaeb78
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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