Document Type

Article

Publication Date

2000

DOI

10.1051/epjap:2000114

Publication Title

European Physical Journal: Applied Physics

Volume

10

Issue

1

Pages

9-14

Abstract

After deposition, by evaporation under vacuum, of Al/Cu/Te, multilayer structures, annealing at 673 K or more for half an hour, under argon flow, allows CuAlTe2 films crystallized in the chalcopyrite structure to be obtained. The optical and electrical properties are interpreted by introducing the influence of impurity foreign phases present in the films. The optical properties are sensitive to the small Al2O3 domains randomly distributed into the CuAlTe2 polycrystalline matrix. The optical band gap is slightly increased (2.35 eV) by the presence of alumina. The conductivity measurements show that a short circuit effect can be induced by a binary Cu2-xTe degenerate phase present at the surface of the films. This effect can be suppressed by KCN etching of the samples that allows the superficial foreign phase to be dissolved.

Comments

© EDP Sciences 2000.

Included with kind permission of The European Physical Journal (EPJ)

Publisher's version available at: https://doi.org/10.1051/epjap:2000114

Original Publication Citation

Benchouk, K., Benseddik, E., El Moctar, C. O., Bernede, J. C., Marsillac, S., Pouzet, J., & Khellil, A. (2000). New buffer layers, large band gap ternary compounds: CuAlTe² European Physical Journal: Applied Physics, 10(1), 9-14. doi:10.1051/epjap:2000114

ORCID

0000-0003-0826-8119 (Marsillac)

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