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Issue 12, 2018
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A new antimony-based organic–inorganic hybrid absorber with photoconductive response

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Abstract

Organic–inorganic hybrid perovskites (most notably CH3NH3PbI3) have recently been demonstrated as high-performance and low cost hybrid materials for photovoltaic application because of their prominent light-absorbing capacity and excellent optoelectronic properties. However, some serious concerns, including the potential toxicity of lead and chemical/phase instability of such hybrid perovskites, have become bottlenecks for their commercialization. In this study, through utilizing an alternative trivalent cation Sb3+ with the ns2np0 electronic configuration, we designed a new lead-free hybrid material, [tert-butylammonium]4[Sb4I16]·2H2O (1), which adopts a zero-dimensional architecture consisting of corner-sharing SbI6 octahedra. It is noteworthy that 1 shows evident light-absorbance with a narrow optical bandgap of ∼2.06 eV, along with positive temperature-dependent conductivity and notable photo-conductive response. Moreover, 1 displays phase stability under ambient conditions, which is superior to that of CH3NH3PbI3. The obtained results suggest the potential of 1 as a light absorbing material for photovoltaic applications.

Graphical abstract: A new antimony-based organic–inorganic hybrid absorber with photoconductive response

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Publication details

The article was received on 25 Aug 2018, accepted on 04 Oct 2018 and first published on 04 Oct 2018


Article type: Research Article
DOI: 10.1039/C8QI00902C
Citation: Inorg. Chem. Front., 2018,5, 3028-3032
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    A new antimony-based organic–inorganic hybrid absorber with photoconductive response

    A. Khan, S. Han, X. Liu, K. Tao, D. Dey, J. Luo and Z. Sun, Inorg. Chem. Front., 2018, 5, 3028
    DOI: 10.1039/C8QI00902C

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