Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Organic-inorganic lead halide perovskites(PS) are highly interesting materials that have attracted much attention in the last years because of the high efficiency values obtained in PS based solar cells(~20%), low cost and easy fabrication. Besides photovoltaic applications, PS's derivatives can be exploited as light emitting materials for LEDs due to their outstanding electrical and photoluminescent properties that make them excellent candidates for the development of low-cost, pure color and easy-to-be-processed displays. Nevertheless, understanding and controlling the crystal growth and morphology, as well as the chemical composition of the films are crucial parameters to be optimized in order to obtain superb quality PS films and high performance opto-electronic devices.
This work aims at preparing and characterizing efficient LEDs produced through thermal evaporation of a lead precursor and the subsequent reaction with a methylammonium derivative to form the PS layer. In general, solution-processed strategies yield low homogeneity and poor surface coverage films, as well as morphological defects that induce charge recombination pathways, thus limiting the efficiency of the ultimate devices significantly. On the contrary, our methodology allows a careful control of the PS thickness, crystal size and bandgap tunability; while ensuring low porosity and minimizing the formation of pinholes, which are essential issues to be overcome for the preparation high-performing devices.
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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.
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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.
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