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Issue 17, 2014
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Arising applications of ferroelectric materials in photovoltaic devices

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The ferroelectric-photovoltaic (FE-PV) device, in which a homogeneous ferroelectric material is used as a light absorbing layer, has been investigated during the past several decades with numerous ferroelectric oxides. The FE-PV effect is distinctly different from the typical photovoltaic (PV) effect in semiconductor p–n junctions in that the polarization electric field is the driving force for the photocurrent in FE-PV devices. In addition, the anomalous photovoltaic effect, in which the voltage output along the polarization direction can be significantly larger than the bandgap of the ferroelectric materials, has been frequently observed in FE-PV devices. However, a big challenge faced by the FE-PV devices is the very low photocurrent output. The research interest in FE-PV devices has been re-spurred by the recent discovery of above-bandgap photovoltage in materials with ferroelectric domain walls, electric switchable diodes and photovoltaic effects, tip-enhanced photovoltaic effects at the nanoscale, and new low-bandgap ferroelectric materials and device design. In this feature article, we reviewed the advance in understanding the mechanisms of the ferroelectric photovoltaic effects and recent progress in improving the photovoltaic device performance, including the emerging approaches of integrating the ferroelectric materials into organic heterojunction photovoltaic devices for very high efficiency PV devices.

Graphical abstract: Arising applications of ferroelectric materials in photovoltaic devices

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Publication details

The article was received on 18 Oct 2013, accepted on 13 Nov 2013 and first published on 13 Nov 2013

Article type: Feature Article
DOI: 10.1039/C3TA14188H
Citation: J. Mater. Chem. A, 2014,2, 6027-6041
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    Arising applications of ferroelectric materials in photovoltaic devices

    Y. Yuan, Z. Xiao, B. Yang and J. Huang, J. Mater. Chem. A, 2014, 2, 6027
    DOI: 10.1039/C3TA14188H

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