Schottky Diode Ultraviolet Detector Based on $ \hbox{TiO}_{2}$ Nanowire Array
2011; Institute of Electrical and Electronics Engineers; Volume: 33; Issue: 1 Linguagem: Inglês
10.1109/led.2011.2173896
ISSN1558-0563
AutoresHaifeng Zhang, Shengping Ruan, Hailong Li, Min Zhang, Kaibo Lv, Caihui Feng, Weiyou Chen,
Tópico(s)Nanoplatforms for cancer theranostics
ResumoIn this letter, a Schottky diode ultraviolet (UV) detector based on TiO 2 nanowire (NW) array with Ag electrode is fabricated. The TiO 2 NW array was prepared via a low-temperature hydrothermal method and characterized by means of X-ray diffraction, scanning electron microscope, and XPS. The Schottky barrier character of Ag/TiO 2 contact was researched in detail. At -5-V bias, the dark current of the detector was less than 35 nA. Under the irradiation of 350-nm UV light, a high responsivity of 3.1 A/W was achieved due to the internal gain. The Schottky diode detector with simple fabrication process, low cost, and superior performance would provide a new way in fabricating UV imaging arrays.
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