1. Narrowband ultraviolet photodetector based on MgZnO and NPB heterojunction.
- Author
-
Hu Z, Li Z, Zhu L, Liu F, Lv Y, Zhang X, and Wang Y
- Subjects
- 1-Naphthylamine chemistry, Electrons, 1-Naphthylamine analogs & derivatives, Benzidines chemistry, Magnesium Compounds chemistry, Optical Devices, Oxides chemistry, Ultraviolet Rays, Zinc Compounds chemistry, Zinc Oxide chemistry
- Abstract
An ultraviolet photodetector was fabricated based on Mg0.07Zn0.93O heterojunction. N, N'-bis (naphthalen-1-y1)-N, N'-bis(pheny) benzidine was selected as the hole transporting layer. I-V characteristic curves of the device were measured in the dark and under the illumination of 340 nm UV light with density of 1.33 mW/cm2. The device showed a low dark current of about 3×10(-10) A and a high photo-dark current ratio of 1×10(5) at -2 V bias. A narrowband photoresponse was observed from 300 to 400 nm and centered at 340 nm with a full width at half-maximum of only 30 nm. The maximum peak response is at 340 nm, which is 0.192 A/W at the bias of -1 V.
- Published
- 2012
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