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Formic acid: an accelerator and quality promoter for nonseeded growth of CH3NH3PbI3 single crystals

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Abstract

With the aid of formic acid, CH3NH3PbI3 single crystal of 9 mm in length was directly harvested within 3 days via a nonseeded solution temperature-lowering (STL) method. It showed a record-narrow full width at half maximum of 13 arcsec for the high-resolution X-ray rocking curve, a low trap-state density of 3.1 × 109 cm−3, a high carrier mobility of 162 cm2 V−1 s−1 and high moisture stability. The addition of formic acid could suppress the oxidation of iodide ions in a conventional STL process, resulting in rapid growth of high-quality CH3NH3PbI3 single crystals.

Graphical abstract: Formic acid: an accelerator and quality promoter for nonseeded growth of CH3NH3PbI3 single crystals

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Publication details

The article was received on 13 Sep 2017, accepted on 08 Dec 2017 and first published on 15 Dec 2017


Article type: Communication
DOI: 10.1039/C7CC07154J
Citation: Chem. Commun., 2018, Advance Article
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    Formic acid: an accelerator and quality promoter for nonseeded growth of CH3NH3PbI3 single crystals

    Q. Lv, Z. Lian, Q. Li, J. Sun and Q. Yan, Chem. Commun., 2018, Advance Article , DOI: 10.1039/C7CC07154J

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