Shift current bulk photovoltaic effect in polar materials—hybrid and oxide perovskites and beyond
| Autor: | Andrew M. Rappe, Fan Zheng, Steve M. Young, Fenggong Wang, Shi Liu, Liang Z. Tan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Photocurrent
Materials science Band gap Inorganic chemistry Photovoltaic system Energy conversion efficiency Oxide 02 engineering and technology Anomalous photovoltaic effect 021001 nanoscience & nanotechnology 01 natural sciences Engineering physics Ferroelectricity Computer Science Applications chemistry.chemical_compound chemistry Mechanics of Materials Modeling and Simulation 0103 physical sciences General Materials Science Current (fluid) 010306 general physics 0210 nano-technology |
| Zdroj: | npj Computational Materials. 2 |
| ISSN: | 2057-3960 |
| DOI: | 10.1038/npjcompumats.2016.26 |
| Popis: | The bulk photovoltaic effect (BPVE) refers to the generation of a steady photocurrent and above-bandgap photovoltage in a single-phase homogeneous material lacking inversion symmetry. The mechanism of BPVE is decidedly different from the typical p–n junction-based photovoltaic mechanism in heterogeneous materials. Recently, there has been renewed interest in ferroelectric materials for solar energy conversion, inspired by the discovery of above-bandgap photovoltages in ferroelectrics, the invention of low bandgap ferroelectric materials and the rapidly improving power conversion efficiency of metal halide perovskites. However, as long as the nature of the BPVE and its dependence on composition and structure remain poorly understood, materials engineering and the realisation of its true potential will be hampered. In this review article, we survey the history, development and recent progress in understanding the mechanisms of BPVE, with a focus on the shift current mechanism, an intrinsic BPVE that is universal to all materials lacking inversion symmetry. In addition to explaining the theory of shift current, materials design opportunities and challenges will be discussed for future applications of the BPVE. |
| Databáze: | OpenAIRE |
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