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Stable and conductive lead halide perovskites facilitated by X-type ligands

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Abstract

Lead halide perovskites exhibit outstanding optoelectronic and optical properties. However, some applications of perovskites are hindered by their instability in polar environments; thus, how to balance stability with conductivity is a great challenge. Here, we report a new approach of using X-type ligands to address this issue. Surface treatments containing multi-step ligand exchanges and ion filling were necessary to obtain X-type ligand-protected perovskites. Performances of this material show that: (1) the crystal structure of perovskites is stable in ethanol; (2) surface defects can be fixed by a photoactivation process and photoluminescence intensity can be enhanced to 136%; and (3) electronic devices fabricated from such materials show stabilility even after washing with ethanol. X-type ligand-protected perovskites with high stability and good conductivity are promising new materials for wide applications in electronic and optoelectronics devices.

Graphical abstract: Stable and conductive lead halide perovskites facilitated by X-type ligands

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Publication details

The article was received on 27 Mar 2017, accepted on 01 May 2017 and first published on 04 May 2017


Article type: Paper
DOI: 10.1039/C7NR02125A
Citation: Nanoscale, 2017, Advance Article
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    Stable and conductive lead halide perovskites facilitated by X-type ligands

    L. Ruan, W. Shen, A. Wang, Q. Zhou, H. Zhang and Z. Deng, Nanoscale, 2017, Advance Article , DOI: 10.1039/C7NR02125A

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