Temperature-Dependent Crystallization Mechanisms of Methylammonium Lead Iodide Perovskite From Different Solvents

Hybrid perovskites are a novel type of semiconductors that show great potential for solution-processed optoelectronic devices. For all applications, the device performance is determined by the quality of the solution-processed perovskite thin films. During solution processing, the interaction of sol...

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Autores principales:	Oleksandra Shargaieva, Hampus Näsström, Jinzhao Li, Daniel M. Többens, Eva L. Unger
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	hybrid perovskites in-situ GIWAXS temperature-dependent crystallization solvate intermediate phase activation energy General Works A
Acceso en línea:	https://doaj.org/article/4dd9e042fc4a4769942746dcd2d64190
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spelling	oai:doaj.org-article:4dd9e042fc4a4769942746dcd2d641902021-11-30T12:15:09ZTemperature-Dependent Crystallization Mechanisms of Methylammonium Lead Iodide Perovskite From Different Solvents2296-598X10.3389/fenrg.2021.749604https://doaj.org/article/4dd9e042fc4a4769942746dcd2d641902021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fenrg.2021.749604/fullhttps://doaj.org/toc/2296-598XHybrid perovskites are a novel type of semiconductors that show great potential for solution-processed optoelectronic devices. For all applications, the device performance is determined by the quality of the solution-processed perovskite thin films. During solution processing, the interaction of solvent with precursor molecules often leads to the formation of solvate intermediate phases that may diverge the crystallization pathway from simple solvent evaporation to a multi-step formation process. We here investigate the crystallization of methylammonium lead iodide (MAPbI3) from a range of commonly utilized solvents, namely dimethyl sulfoxide (DMSO), N,N-dimethylformamide (DMF), N-methylpyrrolidone (NMP), and gamma-butyrolactone (GBL) at different temperatures ranging from 40°C to >100°C by in-situ grazing-incidence wide-angle X-ray scattering (GIWAXS) measurements. For all solvents but GBL, we clearly observe the formation of solvate-intermediate phases at moderate processing temperatures. With increasing temperatures, an increasing fraction of the MAPbI3 perovskite phase is observed to form directly. From the temperature-dependence of the phase-formation and phase-decomposition rates, the activation energy to form the MAPbI3 perovskite phase from the solvate-phases are determined as a quantitative metric for the binding strength of the solvent within the solvate-intermediate phases and we observe a trend of DMSO > DMF > NMP > GBL. These results enable prediction of processing temperatures at which solvent molecules can be effectively removed.Oleksandra ShargaievaHampus NäsströmHampus NäsströmJinzhao LiDaniel M. TöbbensEva L. UngerEva L. UngerFrontiers Media S.A.articlehybrid perovskitesin-situ GIWAXStemperature-dependent crystallizationsolvate intermediate phaseactivation energyGeneral WorksAENFrontiers in Energy Research, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hybrid perovskites in-situ GIWAXS temperature-dependent crystallization solvate intermediate phase activation energy General Works A
spellingShingle	hybrid perovskites in-situ GIWAXS temperature-dependent crystallization solvate intermediate phase activation energy General Works A Oleksandra Shargaieva Hampus Näsström Hampus Näsström Jinzhao Li Daniel M. Többens Eva L. Unger Eva L. Unger Temperature-Dependent Crystallization Mechanisms of Methylammonium Lead Iodide Perovskite From Different Solvents
description	Hybrid perovskites are a novel type of semiconductors that show great potential for solution-processed optoelectronic devices. For all applications, the device performance is determined by the quality of the solution-processed perovskite thin films. During solution processing, the interaction of solvent with precursor molecules often leads to the formation of solvate intermediate phases that may diverge the crystallization pathway from simple solvent evaporation to a multi-step formation process. We here investigate the crystallization of methylammonium lead iodide (MAPbI3) from a range of commonly utilized solvents, namely dimethyl sulfoxide (DMSO), N,N-dimethylformamide (DMF), N-methylpyrrolidone (NMP), and gamma-butyrolactone (GBL) at different temperatures ranging from 40°C to >100°C by in-situ grazing-incidence wide-angle X-ray scattering (GIWAXS) measurements. For all solvents but GBL, we clearly observe the formation of solvate-intermediate phases at moderate processing temperatures. With increasing temperatures, an increasing fraction of the MAPbI3 perovskite phase is observed to form directly. From the temperature-dependence of the phase-formation and phase-decomposition rates, the activation energy to form the MAPbI3 perovskite phase from the solvate-phases are determined as a quantitative metric for the binding strength of the solvent within the solvate-intermediate phases and we observe a trend of DMSO > DMF > NMP > GBL. These results enable prediction of processing temperatures at which solvent molecules can be effectively removed.
format	article
author	Oleksandra Shargaieva Hampus Näsström Hampus Näsström Jinzhao Li Daniel M. Többens Eva L. Unger Eva L. Unger
author_facet	Oleksandra Shargaieva Hampus Näsström Hampus Näsström Jinzhao Li Daniel M. Többens Eva L. Unger Eva L. Unger
author_sort	Oleksandra Shargaieva
title	Temperature-Dependent Crystallization Mechanisms of Methylammonium Lead Iodide Perovskite From Different Solvents
title_short	Temperature-Dependent Crystallization Mechanisms of Methylammonium Lead Iodide Perovskite From Different Solvents
title_full	Temperature-Dependent Crystallization Mechanisms of Methylammonium Lead Iodide Perovskite From Different Solvents
title_fullStr	Temperature-Dependent Crystallization Mechanisms of Methylammonium Lead Iodide Perovskite From Different Solvents
title_full_unstemmed	Temperature-Dependent Crystallization Mechanisms of Methylammonium Lead Iodide Perovskite From Different Solvents
title_sort	temperature-dependent crystallization mechanisms of methylammonium lead iodide perovskite from different solvents
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/4dd9e042fc4a4769942746dcd2d64190
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_version_	1718406619268644864

Temperature-Dependent Crystallization Mechanisms of Methylammonium Lead Iodide Perovskite From Different Solvents

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