Recently, the anomalous photovoltaic effect of ferroelectric has attracted much attention in the field of solar photovoltaics. Ferroelectric photovoltaic (FEPV) devices, utilizing the bulk photovoltaic effect (BPVE), exhibit distinct underlying mechanisms compared to the conventional photovoltaic devices based on p-n junctions. BPVE refers to the generation of stable photocurrent and photovoltage over the bandgap in a single-phase material that lacks inversion symmetry. However, the intrinsic mechanism of the BPVE is still unclear despite its great potential for applications. Herein, the theoretical development and recent progress of the FEPV effect are reviewed, and the intrinsic mechanism and theoretical modeling of BPVE are discussed. The theoretical comprehension of BPVE phenomenon with respect to the ballistic model and shift current mechanisms, as well as the available experimental evidence in support of the mechanism are summarized. Finally, the opportunities and challenges for future applications of BPVE are discussed.
关键词
铁电光伏效应/体光伏效应/综述/弹道模型/位移电流模型
Key words
ferroelectric photovoltaic effect/bulk photovoltaic effect/review/ballistic model/shift current model
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