P4K-1 Application of Slanted Finger Inter-Digital Transducer SAW Devices to Plural Ultraviolet Photodetectors

Author

Huang, Tsai-Ju ; Ma, Chein-Ching ; Yu, Jhih-Ming

Author_Institution

Nat. Taiwan Univ., Taipei

fYear

2007

fDate

28-31 Oct. 2007

Firstpage

2095

Lastpage

2098

Abstract

This research introduces plural photodetectors by employing a slanted SAW device with several proximity photoconductive areas. The optical response can be carried out by a photoconductive ZnO overlayer on the LiNbO₃ SAW device. Response of each sensing point can be distinguished according to the corresponding frequency. These devices show high sensitivity and good reproducibility for detecting the intensity of UV light. The 1-point, 2-point and 3-point devices are also applied to construct the power distribution of a light field.

Keywords

lithium compounds; photoconducting materials; photodetectors; surface acoustic wave transducers; ultraviolet detectors; zinc compounds; 1-point devices; 2-point devices; 3-point devices; LiNbO₃; SAW devices; ZnO; light field power distribution; plural ultraviolet photodetectors; proximity photoconductive overlayer; slanted finger inter-digital transducer; Fingers; Frequency; Optical devices; Optical sensors; Photoconducting devices; Photodetectors; Reproducibility of results; Surface acoustic wave devices; Transducers; Zinc oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2007. IEEE

Conference_Location

New York, NY

ISSN

1051-0117

Print_ISBN

978-1-4244-1384-3

Electronic_ISBN

1051-0117

Type

conf

DOI

10.1109/ULTSYM.2007.527

Filename

4410100