Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 141, Issue 37, Pages 14520-14523Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.9b06815
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Funding
- Murata science foundation
- JSPS [JP17H05350, JP17H05137, 18J20896]
- MEXT, Japan [16H02269, 16K05738, 18K19050, 18H05208]
- E-IMR project
- Grants-in-Aid for Scientific Research [16K05738, 18J20896, 18K19050, 16H02269] Funding Source: KAKEN
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The bulk photovoltaic effect (BPVE) is a promising optoelectronic phenomenon for generating a steady-state photocurrent without a bias voltage. Nevertheless, the simple and rational design of materials exhibiting the BPVE remains an important topic in the relevant fields. Here, we report the observation of the BPVE in a simple chiral-polar pair of layered perovskitetype lead iodides in the crystal space group of P1 (#1), which were synthesized by assembling R- and S-chiral organic cations, respectively. The sign of the zero-bias photocurrent is altered by the R/S-chirality of the assembled cations, which define the direction of electric polarization derived from the electric dipole moment of each chiral organic cation aligned in a crystal. The strategy of chirality control in a crystal is expected to be useful when searching for BPVE materials.
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