Investigation of the Conduction Mechanism Insulating Solids

Abstract

Charge transport in insulating solids was studied. Fast pulse methods were used to study the drift mobility of generated carriers. The investigation of carrier mobility and charge transport in monoclinic Se crystals which consist of a lattice of puckered Se8 rings is reported. Work on CdS crystals is discussed. Experiments were carried out to investigate the effect of various electrode materials on the response to the fast excitation pulse. For the observation of carrier transits, the free carriers must be generated near a blocking electrode, but the opposite electrode should be injecting. Room temperature measurements carried out on specimens with Au (top) and In (bottom) electrodes led to an electron drift mobility of 280 sq cm/v sec. With decreasing temperature, electron drift mobility goes through a maximum and then decreases exponentially. Using crystals with exceptionally long hole life times it has been possible to measure the drift mobility of holes in CdS to be about 0.2 sq cm/v sec at room temperature.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 30, 1961
Accession Number
AD0267977

Entities

Organizations

  • University of Leicester

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Carrier Mobility
  • Cathode Followers
  • Charge Carriers
  • Crystal Lattice Vibrations
  • Crystal Lattices
  • Crystal Structure
  • Delay Lines
  • Electrical Properties
  • Electron Mobility
  • Electronic Equipment
  • Electrons
  • Free Electrons
  • Generators
  • Measurement
  • Pulse Generators
  • Scattering
  • Space Charge

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Microelectronics