PACS 73.20.D, 81.15.F

Interface electronic properties of eterojunctions
based on nanocrystalline silicon

E.B. Kaganovich, S.I. Kirillova, E.G. Manoilov, V.E. Primachenko, S.V. Svechnikov

Institute of Semiconductor Physics of NASU, 45, prospect Nauki, 252028 Kiev, Ukraine

Semiconductor Physics, Quantum Electronics & Optoelectronics. 1999. V. 2, No 2. P.11-14. Eng. Il.:1. Ref.:14

Abstract. For investigations of electronic properties of heterojunctions nanocrystalline Si film (nc-Si)/ monocrystalline Si (c-Si) the technique of temperature dependencies of surface photovoltage was used. Two types of samples fabricated by laser ablation of c-Si target with deposition of nc-Si films onto substrates situated at a distance from the target and onto the plane of target were studied. The temperature dependencies of concentration of charge carriers captured in the traps in the heterojunction interface, and of distribution of density of surface electron states on energy were calculated. The connections between conditions of heterojunction fabrication and their electronic properties are clarified.

Keywords: silicon, nanocomposite, boundary electronic states, surface photovoltage.

Paper received 01.06.99; revised manuscript received 05.07.99; accepted for publication 12.07.99.

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