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{\rm TiO}_{2} Nanowires UV Photodetectors With Ir Schottky Contacts

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7 Author(s)
Tsung-Ying Tsai ; Institute of Microelectronics and Department of Electrical Engineering, Center for Micro/Nano Science and Technology, Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan, Taiwan ; Shoou-Jinn Chang ; Wen-Yin Weng ; Sin-Hui Wang
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The authors present the fabrication of a TiO2 nanowire ultraviolet (UV) photodetector (PD) with Iridium Schottky contact electrodes. UV-to-visible rejection ratio of the sample is around 107 when biased at 5 V, and the fabricated PD is visible-blind with a sharp cutoff at 390 nm. With an incident light wavelength of 390 nm and an applied bias of 5 V, the measured responsivity of the PD is 9.73 × 10-4 A/W.

Published in:

IEEE Photonics Technology Letters  (Volume:24 ,  Issue: 18 )