Aqueous solution epitaxy of CdS layers on CuInSe2
| Autor: | Ayodhya N. Tiwari, Hans Zogg, M. Krejci, M. J. Furlong, Daniel Lincot, R. Cortes, M.-C. Bernard, Michel Froment |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Reflection high-energy electron diffraction
Aqueous solution Chemistry Inorganic chemistry Condensed Matter Physics Epitaxy Isotropic etching Cadmium sulfide Inorganic Chemistry chemistry.chemical_compound Chemical engineering Materials Chemistry Thin film High-resolution transmission electron microscopy Chemical bath deposition |
| Zdroj: | Journal of Crystal Growth. 193:114-122 |
| ISSN: | 0022-0248 |
| DOI: | 10.1016/s0022-0248(98)00503-x |
| Popis: | Epitaxial CdS thin films have been deposited from an aqueous ammonia solution containing cadmium ions and thiourea as precursors on single crystalline CuInSe2 films prepared by MBE on Si(1 1 1) and GaAs(1 0 0) substrates. The structure and quality of the films were investigated by RHEED, glancing angle XRD and HRTEM in cross-section. The films are cubic on (1 0 0) substrates, and mixed cubic and hexagonal on (1 1 1) substrates due to the presence of stacking faults parallel to the substrate. The growth is under surface kinetic control with an activation energy of 85 kJ mol−1. Epitaxy improves with increasing temperature and an epitaxial transition temperature at approx. 60°C is demonstrated in the selected experimental conditions. The epitaxy is very sensitive to the preparation of the surface. Beneficial effects of in situ or ex situ chemical etching are found. Similarities between aqueous solution and vapor-phase chemical depositions are pointed out. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect