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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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Flavell, Wendy R.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Toward Water-Resistant, Tunable Perovskite Absorbers Using Peptide Hydrogel Additives
- 2023Elucidating the mechanism of self healing in hydro gel lead halide perovskite composites for use in photovoltaic devices
- 2022Surface stability of ionic-liquid-passivated mixed-cation perovskite probed with in-situ photoelectron spectroscopycitations
- 2021Inelastic background modelling applied to Hard X-ray Photoelectron Spectroscopy of deeply buried layers: a comparison of synchrotron and lab-based (9.25 keV) measurementscitations
- 2020Spatially and temporally resolved degradation in antisolvent treated perovskite films
- 2020Spatially and temporally resolved degradation in antisolvent treated perovskite films
- 2019Air-Stable Methylammonium Lead Iodide Perovskite Thin Films Fabricated via Aerosol-Assisted Chemical Vapor Deposition from a Pseudohalide Pb(SCN)2 Precursorcitations
- 2018Ambient-Air-Stable Inorganic Cs2SnI6 Double Perovskite Thin Films via Aerosol-Assisted Chemical Vapour Depositioncitations
- 2012Growth and characterization of strained and alloyed type-II ZnTe/ZnSe core-shell nanocrystalscitations
- 2011Controlled synthesis of tuned bandgap nanodimensional alloys of PbS xSe1-xcitations
- 2007Electronic properties of the interface between p-CuI and anatase-phase n-Ti O2 single crystal and nanoparticulate surfaces: A photoemission studycitations
- 2005Resonant photoemission of transition metal perovskitescitations
- 2003Local investigation of electronic structure modulation in BaPbxBi1-xO3 via highly spatially resolved low-loss electron energy loss spectroscopy.
- 2003Investigations of chemical and electronic inhomogeneities in BaPb 1-xBixO3 via highly spatially resolved electron energy loss spectroscopycitations
- 2002Electronic structure and reactivity of TM-doped La1-xSrxCoO3 (TM = Ni, Fe) catalystscitations
- 2001X-ray powder diffraction and EXAFS studies on SnAPO-5 and Cu:SnAPO-5citations
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article
Electronic properties of the interface between p-CuI and anatase-phase n-Ti O2 single crystal and nanoparticulate surfaces: A photoemission study
Abstract
We present a study of the growth of the p -type inorganic semiconductor CuI on n -type Ti O2 anatase single crystal (101) surfaces and on nanoparticulate anatase surfaces using synchrotron radiation photoemission spectroscopy. Core level photoemission data obtained using synchrotron radiation reveal that both the substrate (Ti O2) and the overlayer (CuI) core levels shift to a lower binding energy to different degrees following the growth of CuI on Ti O2. Valence band photoemission data show that the valence band maximum of the clean substrate differs from that of the dosed surface which may be interpreted qualitatively as due to the introduction of a new density of states within the band gap of Ti O2 as a result of the growth of CuI. The valence band offset for the heterojunction n-Ti O2 p-CuI has been measured using photoemission for both nanoparticulate and single crystal Ti O2 surfaces, and the band energy alignment for these heterojunction interfaces is presented. With the information obtained here, it is suggested that the interface between p-CuI and single crystal anatase-phase n-Ti O2 is a type-II heterojunction interface, with significant band bending. The measured total band bending matches the work function change at the interface, i.e., there is no interface dipole. In the case of the nanoparticulate interface, an interface dipole is found, but band bending within the anatase nanoparticles remains quite significant. We show that the corresponding depletion layer may be accommodated within the dimension of the nanoparticles. The results are discussed in the context of the functional properties of dye-sensitized solid state solar cells. © 2007 American Institute of Physics.