Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics (AP-HOPV17)
Publication date: 7th November 2016
The use of organic/inorganic perovskite and especially CH3NH3PbI3 as solar cells material constitutes one of the main breakthrough of this last five years in solar energy research. A lot attention has since been devoted to the development and improvement of these organic/inorganic perovskite materials and alternative chemistry have been proposed i.e. different nature of the halide (X), the metal (B), or the cation group (A), combination with hole conductors as well as the development and optimization of novel fabrication/deposition techniques bringing efficiency up to 22.1%. While these materials are usually characterized through their structure (XRD) and performance within solar cell communities, not so much attention is devoted to their chemical composition and, specifically at the surface. Photoelectron spectroscopy (PES) can easily fulfill this task. In addition to chemical information, PES provides an overall picture of the electronic structure of the perovskite in relation to its scaffold layer (e.g. TiO2, Al2O3), when studied with hard X-rays and calculations methods. Through various examples following the evolution of the perovskite from MAPbI3 to the quadruple cations system [1], we will show how PES can be used to investigate lead based perovskite materials prepared with various anion (I-, Br-, Cl-) or cation (Rb+, Cs+, MA+, FA+). [2][3] By probing different surface sensitivity by coupling soft and hard X-ray PES, we will also show that the outermost surface (first nanometers) can be significantly different from the bulk.[4] Finally, PES work performed on bismuth based materials will also be presented in this communication.[5]
[1] M. Saliba, T. Matsui, K. Domanski, J.-Y. Seo, A. Ummadisingu, S. M. Zakeeruddin, J.-P. Correa Baena, W. R. Tress, A. Abate, A. Hagfeldt, M. Grätzel, Science, 2016, DOI: 10.1126/science.aah5557
[2] R. Lindblad, N. K. Jena, B. Philippe, J. Oscarsson, D. Bi, A. Lindblad, S. Mandal, B. Pal, D. D. Sarma, O. Karis, H. Siegbahn, E. M. J. Johansson, M. Odelius, H. Rensmo J. Phys. Chem. C, 2014, 119, 1818-1825
[3] S. M. Jain, B. Philippe, E. M. J. Johansson, B.-w. Park, H. Rensmo, T. Edvinsson, G. Boschloo, J. Mater. Chem. A, 2016, DOI: 10.1039/c5ta08745g
[4] T. J. Jacobsson, J.-P. Correa-Baena, E. Halvani Anaraki, B. Philippe, S. D. Stranks, M. E. F. Bouduban, W. Tress, K. Schenk, J. Teuscher, J.-E. Moser, H. Rensmo, A. Hagfeldt, J. Am. Chem. Soc., 2016, 138, 10331–10343
[5] B. W. Park, B. Philippe,
X. Zhang, H. Rensmo, G. Boschloo, E. M. J. Johansson, Adv. Mater., 2015, 6806-6813
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.