Title :
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
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;
Conference_Titel :
Ultrasonics Symposium, 2007. IEEE
Conference_Location :
New York, NY
Print_ISBN :
978-1-4244-1384-3
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2007.527
