Crystal Structure of DMF-Intermediate Phases Uncovers the Link Between CH3NH3PbI3 Morphology and Precursor Stoichiometry | Sciact - CRIS-system of Boreskov Institute of Catalysis

Crystal Structure of DMF-Intermediate Phases Uncovers the Link Between CH3NH3PbI3 Morphology and Precursor Stoichiometry Full article

Journal

The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455

Output data

Year: 2017, Volume: 121, Number: 38, Pages: 20739-20743 Pages count : 5 DOI: 10.1021/acs.jpcc.7b08468

Tags

Design for testability; Morphology; Perovskite

Authors

Petrov Andrey A. ¹ , Sokolova Iuliia P. ¹ , Belich Nikolai A. ¹ , Peters Georgy S. ² , Dorovatovskii Pavel V. ² , Zubavichus Yan V. ² , Khrustalev Victor N. ³ , Petrov Andrey V. ⁴ , Grätzel Michael ⁵ , Goodilin Eugene A. ^1,6 , Tarasov Alexey B. ^1,6

Affiliations

1	Laboratory of New Materials for Solar Energetics, Department of Materials Science, Lomonosov Moscow State University
2	National Research Center “Kurchatov Unstitute”
3	Department of Inorganic Chemistry, Peoples’ Friendship University of Russia (RUDN University)
4	Institute of Chemistry, Saint-Petersburg State University
5	Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering École Polytechnique Fedérale de Lausanne (EPFL)
6	Laboratory of Inorganic Materials, Department of Chemistry, Lomonosov Moscow State University

We found for the first time a new origin of selection of perovskite crystallization pathways from DMF solutions containing MAI and PbI2 to present here a comprehensive study of a full set of essential intermediate phases determining the perovskite’s morphology. For all three discovered structurally different intermediate phases forming at a given precursor ratio, we refined their crystal structures by synchrotron X-ray radiation and investigated dynamics and phase assemblage in the course of decomposition. As a result, we revealed a clear correlation between the composition of the intermediate phases, peculiarities of their crystal structure, and the morphology of the final perovskite films. Using the DFT method we calculated formation enthalpies of these intermediate phases and explained the preferential precipitation of DMSO-adduct rather than DMF-adduct in an antisolvent approach. This finding opens up a possibility of design-on-demand of perovskite materials using simple soft chemistry approaches.

Petrov A.A. , Sokolova I.P. , Belich N.A. , Peters G.S. , Dorovatovskii P.V. , Zubavichus Y.V. , Khrustalev V.N. , Petrov A.V. , Grätzel M. , Goodilin E.A. , Tarasov A.B.
Crystal Structure of DMF-Intermediate Phases Uncovers the Link Between CH3NH3PbI3 Morphology and Precursor Stoichiometry
The Journal of Physical Chemistry C. 2017. V.121. N38. P.20739-20743. DOI: 10.1021/acs.jpcc.7b08468 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Aug 24, 2017
Accepted:	Sep 4, 2017
Published online:	Sep 18, 2017
Published print:	Sep 28, 2017

Web of science:	WOS:000412150500021
Scopus:	2-s2.0-85030547674
Elibrary:	31110466
Chemical Abstracts:	2017:1437289
Chemical Abstracts (print):	167:490720
OpenAlex:	W2751745528

DB	Citing
Web of science	143
Scopus	143
OpenAlex	149