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High quality amorphous CuCl films and their annealing behaviour which exhibits a quantum size effect on excitons

Authors
Journal
Materials Science and Engineering B
0921-5107
Publisher
Elsevier
Publication Date
Volume
15
Issue
2
Identifiers
DOI: 10.1016/0921-5107(92)90045-b
Disciplines
  • Physics

Abstract

Abstract High quality amorphous CuCl films were obtained which are completely transparent below the absorption edge and show a sharp crystallization behaviour near 177 K. On annealing at various temperatures, the quantum size effect of excitons was observed in both the amorphous and the crystalline phases, with the confinement size being increased with increasing annealing temperature. In the amorphous phase the excitons are confined within a size defined by the short-range order, whereas grain boundaries in the crystalline phase provide confinement potential barriers.

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