Low-Dark-Current $\hbox{TiO}_{2}$ MSM UV Photodetectors With Pt Schottky Contacts

Inorganic Lead Halide Perovskite Single Crystals: Phase‐Selective Low‐Temperature Growth, Carrier Transport Properties, and Self‐Powered Photodetection

“…First, we studied the I–V characteristics of the device in the dark; at 0 V, a very low dark current of 10 pA was observed ( Figure a), which is a direct result of the ultralow intrinsic carrier concentration. Low dark current is vital for photodetectors to achieve high signal‐to‐noise ratio and operational reliability . Under white light illumination of 10 mW cm −2 (Figure a), the zero‐bias photocurrent increases by five orders of magnitude to ≈1 µA.…”

High-performance 4H-SiC-based p-i-n ultraviolet photodiode and investigation of its capacitance characteristics

“…Ultraviolet (UV) photodiodes based on wide bandgap semiconductors have been attracting a great deal of attention for commercial and military applications in chemical sensing, flame detection, ozone-hole sensing, short-range communication, and missile plume sensing due to their superior physical properties [1,2]. Recently, a great deal of research has been carried out to develop highperformance 4H-SiC UV photodiodes with varieties of device structures, such as Schottky [3,4], metal-semiconductor-metal [5,6], p-n junction [7], p-i-n junction [8], and avalanche photodiodes [9].…”

Fabrication of UV Photodetector on TiO2/Diamond Film

“…In order to investigate if sample A is depended on only TiO 2 film, typical spectral responses of TiO 2 detectors reported in references 13 and 19 are used for comparison. In reference 13 , the highest responsivity is at a light wavelength of 250 nm, and the responsivity decreases when the wavelength is above or less than 250 nm. In reference 19 , the highest responsivity is at 340 nm, and the responsivity tends to decrease when light wavelength becomes shorter.…”

“…TiO 2 is another wide bandgap semiconductor, which is actively developed as detectors to be applied in the field of gas sensor, photocatalysis and solar cells 12 . Recently, TiO 2 based photodetector has been fabricated by magnetron sputtering method, indicating very low dark current and high responsivity 13 14 . Thus, it is easy to think that combining TiO 2 with diamond may provide a way to enhance the responsivity.…”