Issue 18, 2012

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

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

Article information

Article type
Paper
Submitted
07 Feb 2012
Accepted
08 Mar 2012
First published
09 Mar 2012

J. Mater. Chem., 2012,22, 9161-9165

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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