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

Morris, Madeleine R; Pendlebury, Stephanie R; Hong, Jongin; Dunn, Steve; Durrant, James R · Adv Mater · 2016

basic_science · Level V

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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.