Radiation damage and electron radiation induced recovery in ZnTe

Abstract

Ar ion radiation produced defects in ZnTe crystals and their annealing are investigated using transmission electron microscopy. The defects are identified to be densely distributed small dislocation loops. Under electron beam irradiation, these dislocation loops are seen to reduced in density considerably. This electron beam induced defect annealing is explained qualitatively in terms of the non-radiative recombination of excited electron on the defects.

Key Words:

• Radiation damage
• defect annealing
• transmission electron microscopy
• dislocation loops
• nonradiative recombination