Ferroelectric photovoltaics are receiving a new interest owing to the possible presence of an internal field extending all over the material and the bulk photovoltaic effect (BPE) associated to their non-centrosymmetric character. The BPE in ferroelectrics has been focused on BiFeO3 with a bandgap of 2.7 eV, implying limited responsivity at the visible range. Hexagonal manganites h-ReMnO3 (Re = Lu, Y, etc.) with a narrower bandgap (≈ 1.5 eV) could be promising candidates where BPE had not been documented, and this is the first objective.
Non-centrosymmetry can be intrinsic to the photoabsorber and can be engineered by designing the device. The nonpolar LaFeO3 (bandgap ≈ 2.4 eV) is a good candidate to explore its photoresponsivity to analyze the role of band alignment on photovoltage and compare its photoresponsivity to polar materials.
Josep Fontcuberta, MULFOX group, ICMAB-CSIC
Ignasi Fina, MULFOX group, ICMAB-CSIC
President: Sylvia Matzen, Paris-Saclay University, France
Secretary: Mariona Coll Bau, Institut de Ciència de Materials de Barcelona, ICMAB-CSIC
Vocal: Akash Bhatnagar, Schott AG, Germany
University: Universitat Autònoma de Barcelona (UAB) PhD Programme: Materials Science PhD Programme
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