title: Visible-blind, ultraviolet-sensitive photodetector based on SrTiO3 single crystal.
abstract: High-sensitivity and visible-blind ultraviolet (UV) photoconductive detectors based on SrTiO(3) single crystal with interdigitated electrodes are reported. The responsivities of photovoltage and photocurrent can reach 2.13x10(5) V/W and 213 mA/W, respectively, at 330 nm at ambient temperature, and the corresponding quantum efficiency eta reaches 80.2%. The dark current is lower than 50 pA at 10 V bias, and the UV/visible contrast ratio is about four orders of magnitude with a sharp cutoff at 390 nm. The experimental results demonstrate that SrTiO(3) single crystal has potentially wide applications in UV detection.
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China.
authors.forename: J
authors.initials: J
authors.lastname: Xing
authors.forename: K
authors.initials: K
authors.lastname: Zhao
authors.forename: H B
authors.initials: HB
authors.lastname: Lu
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: G Z
authors.initials: GZ
authors.lastname: Liu
authors.forename: K J
authors.initials: KJ
authors.lastname: Jin
authors.forename: M
authors.initials: M
authors.lastname: He
authors.forename: C C
authors.initials: CC
authors.lastname: Wang
authors.forename: G Z
authors.initials: GZ
authors.lastname: Yang