ZnO-Based Solar Blind Ultraviolet-C Photodetectors Using SiZnO Absorption Layer

Abstract

The p-ZnO:LiNO 3 /i-SiZnO/n-ZnO:In (p-i-n) ZnO-based solar blind ultraviolet-C photodetectors were deposited by vapor cooling condensation system. In view of the high performances of the deposited ZnO-based films, the solar blind performance was resulted due to very low photoresponse in the visible (VIS) wavelength range. The ultraviolet (270 nm)/VIS (420 nm) rejection ratio of 1.01 × 10 4 was obtained. The dominant noise was flicker noise. Furthermore, the photoresponsivity of 0.260 A/W, the noise equivalent power of 3.54 × 10 −12 W, and the specific detectivity of 2.67 × 10 11 cmHz 1/2 /W were obtained, when the photodetectors operated at a reverse bias voltage of −5 V.

A High-Performance UVA Photodetector Based on Polycrystalline Perovskite MAPbCl3/TiO2 Nanorods Heterojunctions

“…Ultraviolet (UV) photodetectors are widely used in ultraviolet communication, flame detection and biological cell canceration detection [ 1 , 2 , 3 , 4 ]. Recently, various kinds of structures for UV photodetectors have been fabricated, such as Metal-Semiconductor-Metal (MSM) [ 5 , 6 , 7 ], PN junction [ 8 , 9 , 10 ], Schottky [ 11 , 12 ] and heterojunction [ 13 , 14 ].…”

Embedded Al-Doped ZnO Grating Strips underneath MgNiO Photoconductor-Structured Ultraviolet Photodetectors

“…In view of the inherent advantages of wide bandgap energy, stable chemical properties, and stable thermal properties, the metal oxide materials were widely used for fabricating UVPDs, solar cells and electronic devices in the recent years. [4][5][6][7][8] Among the metal oxide materials, the MgNiO material is the promising candidate due to its easy tuning of the optical bandgap energy for changing the associated sensing cutoff wavelength. 9 Since the NiO material and the MgO material have the same rock-salt cubic structure and have the similar lattice constant, various MgNiO compositions could be obtained using several deposition methods.…”