Growth and Electrical Transport Properties of Organic Semiconductor Thin Films

Arvind Kumar; R. Prasad; A.K. Debnath; Ajay Singh; S. Samanta; D.K. Aswal; S.K. Gupta

doi:10.4028/www.scientific.net/SSP.209.1

Paper Titles

Growth and Electrical Transport Properties of Organic Semiconductor Thin Films
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HomeSolid State PhenomenaSolid State Phenomena Vol. 209Growth and Electrical Transport Properties of...

Growth and Electrical Transport Properties of Organic Semiconductor Thin Films

Abstract:

Hexadecafluorophthalocyanine (F₁₆CuPc) and Cobalt phthalocyanone (CoPc) thin films of different thickness (20-200nm) have been grown by Molecular Beam Epitaxy (MBE) using different deposition rate (0.2 – 1.0 Å/s). For nanowire type growth lower deposition rate and for films of smooth surface higher deposition rate are found suitable. Charge transport (J~V) of CoPc and F₁₆CuPc films is governed by bulk-limited processes with a bias dependent crossover from Ohmic to trap-free space-charge-limited conduction. The mobility (μ) values at 300 K were found 4.5 and 5.5 cm2 V−1 s−1 for CoPc and F₁₆CuPc films respectively. Mechanism of reverse rectification behavior of an organic heterojunction comprising of CoPc and F₁₆CuPc is explained by Kelvin Probe measurement.

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Solid State Phenomena (Volume 209)

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1-5

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https://doi.org/10.4028/www.scientific.net/SSP.209.1

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November 2013

Authors:

Arvind Kumar, R. Prasad, A.K. Debnath, Ajay Singh, S. Samanta, D.K. Aswal, S.K. Gupta

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Hexadecafluorophthalocyanine, Mobility, Molecular Beam Epitaxy, Space Charge Limited Conduction

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