Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
Perovskite-based solar cells are emerging as low cost and efficient light-to-electricity conversion devices. Understandingthe charge transfer dynamics at different time scales in the newly emerging perovskite solar cells is essential for further optimization. Here, we present our investigations on the charge separation and charge injection dynamics at the CH3NH3PbI3 perovskite/metal oxide interface by using time-resolved photoluminescence (TRPL) and laser flash photolysis measurements. TRPL results showed a clear and fast decay (~ 100 ps and ~ 1 ns decay times) that is almost independent of the metal oxide material (either TiO2 or Al2O3) at the interface [see the upper part of the figure], while the transient absorption signal continued to be detectable up to few milliseconds [bottom part of the figure]. The data indicate the fast separation of electron-hole pairs within the perovskite material, but electrons and holes are long-living after their separation. Low-temperature time-resolved as well as time-integrated PL measurements will be discussed in this presentation. The effect of perovskite deposition methods (namely sequential deposition and single-step spin coating) on the interfacial charge dynamics will also be highlighted. The data on the UV-damage and photostability of the perovskite material will also be discussed.
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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.
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