A lead-halide perovskite molecular ferroelectric semiconductor

Wei-Qiang Liao, Yi Zhang, Chun-Li Hu, Jiang-Gao Mao, Heng-Yun Ye, Peng-Fei Li, Songping D. Huang and Ren-Gen Xiong ()
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Wei-Qiang Liao: Ordered Matter Science Research Center, Southeast University
Yi Zhang: Ordered Matter Science Research Center, Southeast University
Chun-Li Hu: Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences
Jiang-Gao Mao: Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences
Heng-Yun Ye: Ordered Matter Science Research Center, Southeast University
Peng-Fei Li: Ordered Matter Science Research Center, Southeast University
Songping D. Huang: Kent State University
Ren-Gen Xiong: Ordered Matter Science Research Center, Southeast University

Nature Communications, 2015, vol. 6, issue 1, 1-7

Abstract: Abstract Inorganic semiconductor ferroelectrics such as BiFeO3 have shown great potential in photovoltaic and other applications. Currently, semiconducting properties and the corresponding application in optoelectronic devices of hybrid organo-plumbate or stannate are a hot topic of academic research; more and more of such hybrids have been synthesized. Structurally, these hybrids are suitable for exploration of ferroelectricity. Therefore, the design of molecular ferroelectric semiconductors based on these hybrids provides a possibility to obtain new or high-performance semiconductor ferroelectrics. Here we investigated Pb-layered perovskites, and found the layer perovskite (benzylammonium)2PbCl4 is ferroelectric with semiconducting behaviours. It has a larger ferroelectric spontaneous polarization Ps=13 μC cm−2 and a higher Curie temperature Tc=438 K with a band gap of 3.65 eV. This finding throws light on the new properties of the hybrid organo-plumbate or stannate compounds and provides a new way to develop new semiconductor ferroelectrics.

Date: 2015
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DOI: 10.1038/ncomms8338

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