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Title: Persistent photoconductivity in high resistive Zn{sub 3}P{sub 2}

Resistivity and photoconductivity of p-type Zn{sub 3}P{sub 2} polycrystals grown by closed tube vapour transport method have been investigated. Persistent photoconductivity (PPC) has been observed at temperatures T < 200 K. At 77 K, the photoconduction persists for over 10{sup 3} s after termination of the light. The PPC buildup and decay kinetics have been measured at 77 K and analyzed in the frame of large lattice-relaxed deep levels. We have determined the spectral dependence for the optical cross section and obtain an optical ionization energy of 0.83 eV.
Authors:
; ;  [1]
  1. Institute of Physics, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-360 Wrocław (Poland)
Publication Date:
OSTI Identifier:
22277967
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL GROWTH; CRYSTAL LATTICES; PHOTOCONDUCTIVITY; POLYCRYSTALS; P-TYPE CONDUCTORS; TEMPERATURE DEPENDENCE; VAPORS; VISIBLE RADIATION; ZINC PHOSPHIDES