<link rel="stylesheet" href="styles.cf390c6bfbe7555f.css">

Browsing by Author "Hsu, Ching-Chien"

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item type:Item,
    The Effect of Oxygen Vacancy Concentration on Indium Gallium Oxide Solar Blind Photodetector
    (2018-05-01)
    Chen, Kuan-Yu
    ;
    Hsu, Ching-Chien
    ;
    Yu, Hsin-Chieh
    ;
    Peng, Yu-Ming
    ;
    Yang, Chih-Chiang
    In this paper, amorphous indium-gallium-oxide solar-blind metal-semiconductor-metal photodetectors were fabricated by using co-sputtering method. Three samples with different oxygen concentrations, namely, sample A without oxygen, sample B with 2% oxygen concentration, and sample C with 4% oxygen concentration, were investigated. The applied bias was 5 V during device characterization. The ultraviolet (UV)-to-visible rejection ratios were 39, 9.9 x 10(3), and 1.1 x 10(5) for samples A, B, and C, respectively. The dynamic responses of the decay times were 5.79/52.12 s, 1.96/30.49 s, and 0.02/0.75 s for samples A, B, and C, respectively. In summary, the 4% oxygen concentration sample exhibited excellent UV-to-visible rejection ratio and superior decay time.