Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Perovskite solar cells (PSCs) are the fastest growing technology in the solar cell research. They have gained a tremendous interest in the R&D community, due to an incredible boost in their power conversion efficiencies (from 9 % to over 20 %) during the last three years1,2. Current challenges of PSCs research include the discovery of alternative cell constituents to reduce fabrication costs, enhancement of the overall efficiency and stability, optimization of the different properties of the films constituting the devices.In the mesoscopic perovskite cell architecture, the introduction of a thin titania (TiO2) compact layer between the fluorine-doped tin oxide (FTO) electrode and the mesoporous TiO2 scaffold is needed as hole-blocking layer, preventing holes formed in the perovskite or hole-transporting layer from reaching the FTO, thus short-circuiting the cell. Blocking layer optimization has been drawing increasing attention as it can strongly affect the performance of the perovskite-based solar cell devices.3,4 The main aim of this work is a thorough morphology characterization (thickness, roughness and crystal structure) of a set of TiO2 compact layers produced by different sol-gel methods and applied by spin-coating. Precursors for the compact layer films are TiCl4 2M water solution, and Ti-isopropoxide in absolute ethanol or in anhydrous isopropanol solution.Our ultimate goal is to the correlate the choice of the compact layer to the photovoltaic performance of mesoscopic PSCs, to their stability, and hysteresis behavior. The performance of the PSCs does not differ much when a different compact layer is employed, as expected due to the similar fabrication of the titania layers. However, TiCl4-containing cells exhibit a longer lifetime, and a negligible hysteresis. The results have been supported by the outcomes of the morphological analysis and of the time-resolved photoluminescence experiments.
References:
1. H.S. Kim, C.R. Lee, J.H. Im, K.B. Lee, T. Moehl, A. Marchioro, S.J. Moon, R.H. Baker, J.H. Yum, J.E. Moser, M. Grätzel, N.G. Park, Scientific Reports | 2:591|DOI:10.1038/srep00591.
2. W.S. Yang, J.H. Noh, N.J. Jeon, Y.C. Kim, S. Ryu, J. Seo, S.I. Seok, Science 348, 2015, 1234-1237.
3. Y. Wu, X. Yang, H. Chen, K. Zhang, C. Qin, J. Liu, W. Peng, A. Islam, E. Bi, F. Ye, M. Yin, P. Zhang, L. Han, Applied Physics Express 7, 2014, 052301.
4. K. Wojciechowski, M. Saliba, T. Leijtens, A. Abate, H. J. Snaith, Energy Envirom. Sci. 7, 2014, 1142.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
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.