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Issue 9, 2012
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Electrical and thermal properties of a carbon nanotube/polycrystalline BiFeO3/Pt photovoltaic heterojunction with CdSe quantum dots sensitization

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Abstract

Electrical and thermal properties of a carbon nanotube (CNT)/multiferroic BiFeO3 (BFO)/Pt photovoltaic heterojunction are investigated for the first time. Enhanced photovoltaic properties (Jsc ≈ 2.1 μA cm−2 and Voc ≈ 0.47 V), as compared to the traditional polycrystalline BFO with indium tin oxide (ITO) as the top electrode, are observed due to the unique properties of CNT. An equivalent electrical and thermal model is constructed based on the energy band diagram of the CNT/BFO/Pt heterojunction for the first time and the carriers' transportation behavior is depicted theoretically. The influence of CdSe quantum dots (QDs) sensitization on the photovoltaic properties is presented, and a clear improvement of ∼4 fold in photocurrent density is observed.

Graphical abstract: Electrical and thermal properties of a carbon nanotube/polycrystalline BiFeO3/Pt photovoltaic heterojunction with CdSe quantum dots sensitization

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Publication details

The article was received on 10 Jan 2012, accepted on 26 Feb 2012 and first published on 02 Mar 2012


Article type: Paper
DOI: 10.1039/C2NR30084B
Nanoscale, 2012,4, 2926-2930

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    Electrical and thermal properties of a carbon nanotube/polycrystalline BiFeO3/Pt photovoltaic heterojunction with CdSe quantum dots sensitization

    Y. Zang, D. Xie, Y. Chen, X. Wu, T. Ren, J. Wei, H. Zhu and D. Plant, Nanoscale, 2012, 4, 2926
    DOI: 10.1039/C2NR30084B

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