Growth of Arsenic-Doped Hg1– xCdxTe (x ~ 0.4) Epilayers by Metalorganic Chemical Vapor Deposition
- Авторы: Evstigneev V.S.1, Chilyasov A.V.1, Moiseev A.N.1, Kostyunin M.V.1
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Учреждения:
- Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences
- Выпуск: Том 55, № 10 (2019)
- Страницы: 984-988
- Раздел: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/158773
- DOI: https://doi.org/10.1134/S0020168519100029
- ID: 158773
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Аннотация
We have studied arsenic incorporation from tris(dimethylamino)arsine into epitaxial Hg1– xCdxTe (x ~ 0.4) layers grown by the metalorganic chemical vapor deposition interdiffused multilayer process (MOCVD-IMP) on GaAs (310), (100), and (111)B substrates. CdTe was grown from dimethylcadmium and diethyltellurium vapors, and HgTe, from diisopropyltellurium and mercury vapors. Arsenic incorporation into the layers has been shown to depend on the crystallographic orientation of their growth, increasing in the order (111)B < (100) < (310). The addition of tris(dimethylamino)arsine during CdTe sublayer growth in an excess of diethyltellurium has been shown to have no significant effect on the macroscopic composition of the HgCdTe layers. The arsenic-doped HgCdTe layers have p-type conductivity. The fraction of electrically active arsenic in the layers depends on its concentration and rises from 15 to 85% in going from the (111)B to (100) and to (310) orientation. Additional two-step annealing ensures a near 100% arsenic activation in the HgCdTe layers.
Об авторах
V. Evstigneev
Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences
Автор, ответственный за переписку.
Email: evstigneev@ihps.nnov.ru
Россия, ul. Tropinina 49, Nizhny Novgorod, 603951
A. Chilyasov
Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences
Email: evstigneev@ihps.nnov.ru
Россия, ul. Tropinina 49, Nizhny Novgorod, 603951
A. Moiseev
Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences
Email: evstigneev@ihps.nnov.ru
Россия, ul. Tropinina 49, Nizhny Novgorod, 603951
M. Kostyunin
Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences
Email: evstigneev@ihps.nnov.ru
Россия, ul. Tropinina 49, Nizhny Novgorod, 603951
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