Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
Abstract
Vanadium oxide (s-V2O5) thin films have been employed as a hole extraction layer (HEL) in polymer bulk heterojunction solar cells (OPV). V2O5 films were fabricated by a spin-coating solutions of vanadium oxitriisopropoxide precursor at room temperature in air. Significantly, the deposition method does not requirethermal annealing or plasma treatment. Absorption spectroscopy shows that s-V2O5 oxide layer is highly transparent (> 97 % for a 4 nm film) in the visible range with a band gap of 2.75 eV. The electronic structure of s-V2O5 film has been studied byultraviolet photoelectron spectroscopy and shows a work function of 5.2 eV resulting in effective hole extraction with minimum barrier. OPVs withs-V2O5hole extraction layer, and active layer of PFD2TBT8:PC70BMand an electron extraction layer of Ca show an efficiency of 6.3 (± 0.2) %. A range of alternative hole extraction layers (PEDOT, thermally deposited V2O5 and MoO3, and solution deposited MoO3) have been studied with the best competing devices yielding 6.0 (± 0.2) % efficiency. In addition the lifetime stability of different hole extraction layers devices under outdoor conditions for 10 weekswill be presented.
1. K. Zilberberg, S. Trost, J. Meyer, A. Kahn, A. Behrendt, D. Luetzenkirchen-Hecht, R. Frahm and T. Riedl, Inverted organic solar cells with sol-gel processed high work-function vanadium oxide hole-extraction layers, Advanced Functional Materials 21 (2011), no. 24, 4776-4783. 2. I. Hancox, L. A. Rochford, D. Clare, M. Walker, J. J. Mudd, P. Sullivan, S. Schumann, C. F. McConville and T. S. Jones, Optimization of a high work function solution processed vanadium oxide hole-extracting layer for small molecule and polymer organic photovoltaic cells, Journal of Physical Chemistry C 117 (2013), no. 1, 49-57. 3. Z. A. Tan, W. Q. Zhang, C. H. Cui, Y. Q. Ding, D. P. Qian, Q. Xu, L. J. Li, S. S. Li and Y. F. Li, Solution-processed vanadium oxide as a hole collection layer on an ito electrode for high-performance polymer solar cells, Physical Chemistry Chemical Physics 14 (2012), no. 42, 14589-14595. 4. D. C. Watters, J. Kingsley, H. Yi, T. Wang, A. Iraqi and D. Lidzey, Optimising the efficiency of carbazole co-polymer solar-cells by control over the metal cathode electrode, Organic Electronics 13 (2012), no. 8, 1401-1408. 5. E. S. R. Bovill, J. Griffin, T. Wang, J. W. Kingsley, H. Yi, A. Iraqi, A. R. Buckley and D. G. Lidzey, Air processed organic photovoltaic devices incorporating a moox anode buffer layer, Applied Physics Letters 102 (2013), no. 18. 6. J. Griffin, D. C. Watters, H. Yi, A. Iraqi, D. Lidzey and A. R. Buckley, The influence of moox anode stoicheometry on the performance of bulk heterojunction polymer solar cells, Advanced Energy Materials 3 (2013), no. 7, 903-908. 7. B. Mustafa, J. Griffin, A. S. Alsulami, D. Lidzey and A. R. Buckley, Solution Processed Nickel Oxide Anodes for Organic Photovoltaic Devices, Applied Physics Letters, has been accepted
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.