Electrophysical Characteristics of the Pentacene-based MIS Structures with a SiO2 Insulator
- Авторы: Novikov V.A.1, Voitsekhovskii A.V.1,2, Nesmelov S.N.1, Dzyadukh S.M.1, Kopylova T.N.2, Degtyarenko K.M.2, Chernikov E.V.2, Kalygina V.M.1
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Учреждения:
- National Research Tomsk State University
- V. D. Kuznetsov Siberian Physical-Technical Institute at Tomsk State University
- Выпуск: Том 62, № 1 (2019)
- Страницы: 90-99
- Раздел: Article
- URL: https://bakhtiniada.ru/1064-8887/article/view/241463
- DOI: https://doi.org/10.1007/s11182-019-01687-y
- ID: 241463
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Аннотация
In a wide range of frequencies and temperatures, the admittance of MIS structures based on pentacene organic films, formed by thermal evaporation in vacuum on SiO2 and SiO2/Ga2O3 substrates, was experimentally investigated. The capacitance-voltage characteristics of MIS structures with a SiO2 insulator have virtually no hysteresis. It is shown that at temperatures of 150–300 K, an inversion layer is formed in the structures at large positive bias voltages. The concentration of holes in pentacene, determined from the capacitive measurements, exceeds 1018 cm–3 and is practically independent of temperature and frequency. The experimental frequency dependences of the admittance of MIS structures with the SiO2 insulator are in good agreement with the results of calculations performed using the method of equivalent circuits. For structures with a Ga2O3 layer, the negative differential conductance of the insulating layer was detected, which requires the complication of the equivalent circuit. The possibility of using the low-temperature admittance measurements for studying the traps in the pentacene film bulk is shown.
Об авторах
V. Novikov
National Research Tomsk State University
Автор, ответственный за переписку.
Email: novikovvadim@mail.ru
Россия, Tomsk
A. Voitsekhovskii
National Research Tomsk State University; V. D. Kuznetsov Siberian Physical-Technical Institute at Tomsk State University
Email: novikovvadim@mail.ru
Россия, Tomsk; Tomsk
S. Nesmelov
National Research Tomsk State University
Email: novikovvadim@mail.ru
Россия, Tomsk
S. Dzyadukh
National Research Tomsk State University
Email: novikovvadim@mail.ru
Россия, Tomsk
T. Kopylova
V. D. Kuznetsov Siberian Physical-Technical Institute at Tomsk State University
Email: novikovvadim@mail.ru
Россия, Tomsk
K. Degtyarenko
V. D. Kuznetsov Siberian Physical-Technical Institute at Tomsk State University
Email: novikovvadim@mail.ru
Россия, Tomsk
E. Chernikov
V. D. Kuznetsov Siberian Physical-Technical Institute at Tomsk State University
Email: novikovvadim@mail.ru
Россия, Tomsk
V. Kalygina
National Research Tomsk State University
Email: novikovvadim@mail.ru
Россия, Tomsk
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