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Adv Mater. 2016 Sep;28(33):7123-8. doi: 10.1002/adma.201601238. Epub 2016 Jun 9.

Effect of Internal Electric Fields on Charge Carrier Dynamics in a Ferroelectric Material for Solar Energy Conversion.

Author information

1
Centre for Plastic Electronics, Department of Chemistry, Imperial College London, London, SW7 2AZ, UK.
2
Department of Chemistry, Chung-Ang University, Seoul, 06974, Republic of Korea.
3
Materials Research Institute, School of Engineering and Materials, Queen Mary University of London, London, E1 4NS, UK.

Abstract

Spontaneous polarization is shown to enhance the lifetimes of photogenerated species in BaTiO3 . This is attributed to polarization-induced surface band bending acting as a thermal barrier to electron/hole recombination. The study indicates that the efficiencies of solar cells and solar fuels devices can be enhanced by the use of ferroelectric materials.

KEYWORDS:

barium titanate; ferroelectrics; recombination; solar energy

PMID:
27278901
DOI:
10.1002/adma.201601238
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