Publication date: 1st July 2014
The extremely rapid evolution of the perovskite solar cells during the last 2 years [1-3] makes them a very appealing cost- and performance-competitive photovoltaics emerging technology. The state of the art power conversion efficiencies (15-18 %) reached by using different electron transporting materials (TiO2, ZnO, (6,6)-phenyl C61-butyric acid methyl ester –PCBM-), perovskite variants (CH3NH3PbI3-xClx, Y= Br, Cl) and device architectures (e.g. mesoscopic and planar-based junction) evidence the large versatility and wide room for further progress in the perovskite photovoltaics technology. Nevertheless, the spiro-OMeTAD or conducting polymers are commonly used as hole transporting materials (HTMs). However, the use of solution-processed inorganic HTM appears to be an appealing alternative in terms of cost and device robustness. Among the few reports on inorganic HTM [4-9], CuSCN [8,9] appears to be one of the most promising candidates (i.e. devices with power conversion efficiencies of 12.4 %). A piece of work on the use of CuSCN as HTM in perovskite solar cells with different architectures, including perovskite films processed by different techniques, will be presented here. A comparative analysis of the solar cell performance with respect to reference devices with spiro-OMeTAD and without HTM will be shown in order to emphasize the CuSCN role and influence in the perovskite solar cell performance. A correlation between the differences in the device performance and properties of the HTM as well as the perovskite/HTM interface will be introduced. In particular, some advanced processing strategies to improve the perovskite/CuSCN interface will be proposed. A critical analysis about the influence of pinholes in the perovskite film and consequent TiO2/CuSCN local interfaces will be also shown. All in all, an overview about the potentiality of CuSCN as hole selective contact in perovskite photovoltaics technology and crucial information for its successful integration will be given.
References:
[1] H-S. Kim et al., Sci. Rep. 2 (2012) 591-598.
[2] M.M. Lee et al., Sicence 338 (2012) 643-647.
[3]http://www.nrel.gov/ncpv/images/efficiency_chart.jpg
[4] J.A Christians et al., J. Am. Chem. Soc. 2014, 136, 758−764
[5] J-Y. Jeng et al. Adv. Mater 2014. DOI: 10.1002/adma.201306217
[6] A.S. Subbiah et al., J. Phys. Chem. Lett., 2014, DOI: 10.1021/jz500645n
[7] K-C. Wang et al., Sci. Rep. 2014, 4, 4756; DOI:10.1038/srep04756
[8]P. Qin et al., Nat. Commun. 2014, 5:3834 doi: 10.1038/ncomms4834.
[9] S. Chavhan et al., 2014, J. Mater. Chem A. (submitted)
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.