Issue 9, 2018

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

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

Supplementary files

Article information

Article type
Communication
Submitted
13 Sep 2017
Accepted
08 Dec 2017
First published
15 Dec 2017

Chem. Commun., 2018,54, 1049-1052

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, 54, 1049 DOI: 10.1039/C7CC07154J

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