| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Szafrański, Marek
Adam Mickiewicz University in Poznań
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024Structural and optical properties of methylhydrazinium lead bromide perovskites under pressurecitations
- 2024Polyiodides of amino acids. Betainium triiodidecitations
- 2023Electrical polarization switching in bulk single-crystal GaFeO$_3$
- 2022Above-room-temperature ferroelectricity and piezoelectric activity of dimethylglycinium-dimethylglycine chloridecitations
- 2019Vitrification and New Phases in the Water:Pyrimidine Binary Eutectic Systemcitations
- 2019Band Gap Engineering in MASnBr3and CsSnBr3 Perovskites: Mechanistic Insights through the Application of Pressurecitations
- 2018A giant 2-dimensional dielectric response in a compressed hydrogen-bonded hybrid organic-inorganic saltcitations
- 2016Mechanism of Pressure-Induced Phase Transitions, Amorphization, and Absorption-Edge Shift in Photovoltaic Methylammonium Lead Iodidecitations
- 2014Effect of high pressure on the supramolecular structures of guanidinium based ferroelectricscitations
- 2014Quasistatic disorder of NH⋯N bonds and elastic-properties relationship in 2-phenylimidazole crystalscitations
- 2014Origin of metastable properties in the ferroelectric phase of tetraguanidinium dichloro-sulfatecitations
- 2013Strong negative thermal expansion and relaxor ferroelectricity driven by supramolecular patternscitations
- 2011Crystal structures, phase transitions, and pressure-induced ferroelectricity in [C(NH<inf>2</inf>)<inf>3</inf>]<inf>5</inf>SO <inf>4</inf>(SO<inf>3</inf>-OC<inf>2</inf>H<inf>5</inf>)<inf>2</inf>Fcitations
- 2008Anomalous protonic-glass evolution from ordered phase in NH...N hydrogen-bonded dabcoHBF ferroelectriccitations
- 2007Impossibility of pressure-induced crossover from ferroelectric to nonergodic relaxor state in a Pb (Mg1 3 Nb2 3) 0.7 Ti0.3 O3 crystal: Dielectric spectroscopic studycitations
- 2007Crystal structure and phase transitions in perovskite-like C(NH<inf>2</inf>)<inf>3</inf>SnCl<inf>3</inf>citations
- 2006Molecular interactions in crystalline dibromomethane and diiodomethane, and the stabilities of their high-pressure and low-temperature phasescitations
- 2006Disproportionation of pyrazine in NH<sup>+</sup>⋯ hydrogen-bonded complexes: New materials of exceptional dielectric responsecitations
- 2005Structural implications of anomalous thermal expansion and glass-like dielectric response in pyridinium halogenoauratescitations
- 2004High-pressure peculiarities in compositionally ordered Pb(Sc <inf>1/2</inf>Nb<inf>1/2</inf>)O<inf>3</inf>citations
- 2002Dielectric and structural properties of dipyridinium iodide triiodidecitations
- 2001Microscopic instabilities related to H<inf>3</inf>O<sup>+</sup> dynamics in monoguanidinium dioxonium trinitratecitations
- 2000Pressure-induced decoupling of the order-disorder and displacive contributions to the phase transition in diguanidinium tetrachlorostannatecitations
Places of action
| Organizations | Location | People |
|---|
article
Mechanism of Pressure-Induced Phase Transitions, Amorphization, and Absorption-Edge Shift in Photovoltaic Methylammonium Lead Iodide
Abstract
<p>Our single-crystal X-ray diffraction study of methylammonium lead triiodide, MAPbI<sub>3</sub>, provides the first comprehensive structural information on the tetragonal phase II in the pressure range to 0.35 GPa, on the cubic phase IV stable between 0.35 and 2.5 GPa, and on the isostructural cubic phase V observed above 2.5 GPa, which undergoes a gradual amorphization. The optical absorption study confirms that up to 0.35 GPa, the absorption edge of MAPbI<sub>3</sub> is red-shifted, allowing an extension of spectral absorption. The transitions to phases IV and V are associated with the abrupt blue shifts of the absorption edge. The strong increase of the energy gap in phase V result in a spectacular color change of the crystal from black to red around 3.5 GPa. The optical changes have been correlated with the pressure-induced strain of the MAPbI<sub>3</sub> inorganic framework and its frustration, triggered by methylammonium cations trapped at random orientations in the squeezed voids.</p>