Influence of Hydrogen on the Electrical Properties of Pd/InP Structures
- Authors: Shutaev V.A.1, Sidorov V.G.2, Grebenshchikova E.A.1, Vlasov L.K.1, Pivovarova A.A.1, Yakovlev Y.P.1
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Affiliations:
- Ioffe Institute
- IBSG Co., Ltd
- Issue: Vol 53, No 10 (2019)
- Pages: 1389-1392
- Section: Semiconductor Structures, Low-Dimensional Systems, and Quantum Phenomena
- URL: https://journals.rcsi.science/1063-7826/article/view/207238
- DOI: https://doi.org/10.1134/S106378261910018X
- ID: 207238
Cite item
Abstract
The influence of hydrogen on the electrical properties of Pd/n-InP and Pd/oxide/n-InP structures is studied. It is found that a variation in the cutoff voltage \(\Delta {{U}_{{{\text{cut-off}}}}}\) in the current–voltage characteristics of the structures under study upon exposure to hydrogen with concentrations of 0–1 vol % in a nitrogen–hydrogen mixture is described by the exponential dependence: \(\Delta {{U}_{{{\text{cut-off}}}}}\) = a[1 – exp(–b ⋅ NH)], where NH is the hydrogen concentration (vol %), and a and b are constants dependent on the type of structures. It is shown that a decisive influence on how the potential-barrier height changes in the Pd/InP and Pd/oxide/InP structures in the presence of H2 in a gas medium is exerted by a change in the Pd work function in an atmosphere of hydrogen. It is found that, in the structures under study, tunneling and thermal-tunneling charge-transport mechanisms operate at 90–300 K in the presence of hydrogen and without it. With increasing hydrogen concentration in the gas mixture, the predominance of the tunneling charge-transport mechanism becomes more pronounced.
About the authors
V. A. Shutaev
Ioffe Institute
Author for correspondence.
Email: vadimshutaev@mail.ru
Russian Federation, St. Petersburg, 194021
V. G. Sidorov
IBSG Co., Ltd
Email: vadimshutaev@mail.ru
Russian Federation, St. Petersburg, 194021
E. A. Grebenshchikova
Ioffe Institute
Email: vadimshutaev@mail.ru
Russian Federation, St. Petersburg, 194021
L. K. Vlasov
Ioffe Institute
Email: vadimshutaev@mail.ru
Russian Federation, St. Petersburg, 194021
A. A. Pivovarova
Ioffe Institute
Email: vadimshutaev@mail.ru
Russian Federation, St. Petersburg, 194021
Yu. P. Yakovlev
Ioffe Institute
Email: vadimshutaev@mail.ru
Russian Federation, St. Petersburg, 194021