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Issue 18, 2012
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Achieving high open-circuit voltage in the PPV-CdHgTe bilayer photovoltaic devices on the basis of the heterojunction interfacial modification

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Abstract

On the basis of the surface modification of CdHgTe nanocrystals (NCs), a bilayer photovoltaic device composed of poly(p-phenylene-vinylene) (PPV) and CdHgTe NC heterojunction is prepared. The energy bands bend to the vacuum level through tuning the dipole moment of the CdHgTe NCs at the heterojunction interface and 0.3 eV energy band shifting is detected by the ultraviolet photoelectron spectrometer (UPS) measurement. As a result, open-circuit voltage (Voc) of the photodiode can reach 1.4 V under AM 1.5G illumination (100 mW cm−2).

Graphical abstract: Achieving high open-circuit voltage in the PPV-CdHgTe bilayer photovoltaic devices on the basis of the heterojunction interfacial modification

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Publication details

The article was received on 07 Feb 2012, accepted on 08 Mar 2012 and first published on 09 Mar 2012


Article type: Paper
DOI: 10.1039/C2JM30726J
Citation: J. Mater. Chem., 2012,22, 9161-9165
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    Achieving high open-circuit voltage in the PPV-CdHgTe bilayer photovoltaic devices on the basis of the heterojunction interfacial modification

    H. Wei, H. Sun, H. Zhang, W. Yu, F. Zhai, Z. Fan, W. Tian and B. Yang, J. Mater. Chem., 2012, 22, 9161
    DOI: 10.1039/C2JM30726J

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