Articles
  • Electrical properties of cobalt-doped zinc manganite ceramics for infrared detectors
  • Kyeong-Min Kima, Myung-Soo Hanb and Sung-Gap Leea,*
  • a Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University, Jinju 52828, Korea b Micro-Optics Team, Korea Photonics Technology Institute, Gwangju 61007, Korea
Abstract
Zn1.10CoxMn1.90-xO4 (0 ≤ x ≤ 0.25) specimens were prepared using a conventional solid state reaction method. We investigated the structural and electrical properties with varying amounts of Co for application in IR detectors. All specimens exhibited a very dense microstructure and the average grain size decreased slightly with an increase in the composition ratio of Co ions. The Zn1.10Co0.05Mn1.85O4 specimen shows the highest B-value of 5025 K, and the Zn1.10Co0.25Mn1.65O4 specimen shows the minimum resistivity of 100 kΩ • cm. The responsivity,s noise voltage and detectivity of the Zn1.10Co0.10Mn1.80O4 specimen are 0.03 V/W, 6.36 × 10-5V and 2.0104cmHz1/2/W, respectively.

Keywords: Zn-Co-Mn oxide, Electrical properties, Resistivity, Responsivity, Detectivity.

This Article

  • 2016; 17(8): 795-798

    Published on Aug 31, 2016