On the Thermal and Thermodynamic (In)Stability of Methylammonium Lead Halide Perovskites
Open Access
- 22 August 2016
- journal article
- research article
- Published by Springer Science and Business Media LLC in Scientific Reports
- Vol. 6 (1), 31896
- https://doi.org/10.1038/srep31896
Abstract
The interest of the scientific community on methylammonium lead halide perovskites (MAPbX3, X = Cl, Br, I) for hybrid organic-inorganic solar cells has grown exponentially since the first report in 2009. This fact is clearly justified by the very high efficiencies attainable (reaching 20% in lab scale devices) at a fraction of the cost of conventional photovoltaics. However, many problems must be solved before a market introduction of these devices can be envisaged. Perhaps the most important to be addressed is the lack of information regarding the thermal and thermodynamic stability of the materials towards decomposition, which are intrinsic properties of them and which can seriously limit or even exclude their use in real devices. In this work we present and discuss the results we obtained using non-ambient X-ray diffraction, Knudsen effusion-mass spectrometry (KEMS) and Knudsen effusion mass loss (KEML) techniques on MAPbCl3, MAPbBr3 and MAPbI3. The measurements demonstrate that all the materials decompose to the corresponding solid lead (II) halide and gaseous methylamine and hydrogen halide, and the decomposition is well detectable even at moderate temperatures (~60 °C). Our results suggest that these materials may be problematic for long term operation of solar devices.This publication has 27 references indexed in Scilit:
- Synthesis and crystal chemistry of the hybrid perovskite (CH3NH3)PbI3 for solid-state sensitised solar cell applicationsJournal of Materials Chemistry A, 2013
- Electron impact total ionization cross sections for halogens and their hydridesInternational Journal of Mass Spectrometry, 2010
- Solar cell efficiency tables (Version 34)Progress In Photovoltaics, 2009
- Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic CellsJournal of the American Chemical Society, 2009
- The dissociation energy of the new diatomic molecules SiPb and GePbThe Journal of Chemical Physics, 2007
- Texture, residual stress and structural analysis of thin films using a combined X-ray analysisThin Solid Films, 2004
- Calorimetric and IR spectroscopic studies of phase transitions in methylammonium trihalogenoplumbates (II)†Journal of Physics and Chemistry of Solids, 1990
- Alkylammonium lead halides. Part 1. Isolated PbI64− ions in (CH3NH3)4PbI6•2H2OCanadian Journal of Chemistry, 1987
- Reaction Kinetics in Differential Thermal AnalysisAnalytical Chemistry, 1957
- Thermodynamic Properties of the Three Crystalline Forms of Methylammonium ChlorideJournal of the American Chemical Society, 1946