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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Kronik, Leeor
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2021Mechanism and Timescales of Reversible p‐Doping of Methylammonium Lead Triiodide by Oxygencitations
- 2021Mechanism and Timescales of Reversible p‐Doping of Methylammonium Lead Triiodide by Oxygencitations
- 2019Constructing the Electronic Structure of CH3NH3PbI3 and CH3NH3PbBr3 Perovskite Thin Films from Single-Crystal Band Structure Measurementscitations
- 2018Effect of Internal Heteroatoms on Level Alignment at Metal/Molecular Monolayer/Si Interfacescitations
- 2017Biologically Controlled Morphology and Twinning in Guanine Crystalscitations
- 2016Valence and Conduction Band Densities of States of Metal Halide Perovskitescitations
- 2016Enhanced Magnetoresistance in Molecular Junctions by Geometrical Optimization of Spin-Selective Orbital Hybridizationcitations
- 2016High Chloride Doping Levels Stabilize the Perovskite Phase of Cesium Lead Iodidecitations
- 2016Optical phonons in methylammonium lead halide perovskites and implications for charge transportcitations
- 2015Multiscale approach to the electronic structure of doped semiconductor surfacescitations
- 2015"Guanigma"citations
- 2015"guanigma":The Revised Structure of Biogenic Anhydrous Guaninecitations
- 2013Effect of molecule-surface reaction mechanism on the electronic characteristics and photovoltaic performance of molecularly modified Sicitations
- 2010Hg/Molecular Monolayer-Si Junctionscitations
- 2006Spin-polarized electronic structure of Mn-IV-V2 chalcopyritescitations
- 2005Size-dependent spintronic properties of dilute magnetic semiconductor nanocrystalscitations
- 2004Electronic structure and spin polarization of MnGaPcitations
- 2002Electronic structure and spin polarization of MnxGa1-xNcitations
- 2001Electronic structure and spin polarization of Mn-containing dilute magnetic III-V semiconductorscitations
- 2000Frontier orbital model of semiconductor surface passivation
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article
Valence and Conduction Band Densities of States of Metal Halide Perovskites
Abstract
<p>We report valence and conduction band densities of states measured via ultraviolet and inverse photoemission spectroscopies on three metal halide perovskites, specifically methylammonium lead iodide and bromide and cesium lead bromide (MAPbI<sub>3</sub>, MAPbBr<sub>3</sub>, CsPbBr<sub>3</sub>), grown at two different institutions on different substrates. These are compared with theoretical densities of states (DOS) calculated via density functional theory. The qualitative agreement achieved between experiment and theory leads to the identification of valence and conduction band spectral features, and allows a precise determination of the position of the band edges, ionization energy and electron affinity of the materials. The comparison reveals an unusually low DOS at the valence band maximum (VBM) of these compounds, which confirms and generalizes previous predictions of strong band dispersion and low DOS at the MAPbI<sub>3</sub> VBM. This low DOS calls for special attention when using electron spectroscopy to determine the frontier electronic states of lead halide perovskites.</p>