Abstract
Tunneling electron transport through CdS nanocrystal arrays fabricated by the Langmuir-Blodgett method are studied by scanning electron spectroscopy. The effect of the matrix-annealing atmosphere on tunneling transport through the nanocrystal arrays is studied. Electron capture at traps in the case of nanocrystals annealed in vacuum is detected by tunneling current-voltage characteristics analyzed using a model relating the data of tunneling spectroscopy, photoluminescence, and quantum-mechanical calculation. Analysis shows that the nanocrystal surface is passivated by an ammonia monolayer upon annealing in an ammonia atmosphere. It is found that the substrate and surrounding non-passivated nanocrystals have an effect on the electron polarization energy.
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Original Russian Text © K.A. Svit, D.Yu. Protasov, L.L. Sveshnikova, A.K. Shestakov, S.A. Teys, K.S. Zhuravlev, 2014, published in Fizika i Tekhnika Poluprovodnikov, 2014, Vol. 48, No. 9, pp. 1237–1242.
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Svit, K.A., Protasov, D.Y., Sveshnikova, L.L. et al. Tunneling transport through passivated CdS nanocrystal arrays grown by the Langmuir-Blodgett method. Semiconductors 48, 1205–1210 (2014). https://doi.org/10.1134/S1063782614090206
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DOI: https://doi.org/10.1134/S1063782614090206