Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics (AP-HOPV17)
Publication date: 7th November 2016
Back-contact concepts have originally been developed in the field of silicon solar cells, where their implementation has resulted in significant efficiency gains, compared to conventional contacting architectures. Charge collection in these devices is typically facilitated by a set of two interdigitated finger electrode arrays, co-located on the backside of the silicon wafer. In this work we use an analogue concept to construct back-contact perovskite solar cells (bc-PSCs). The main advantage of back-contact concepts is that optical transmission losses arising from the top charge collection electrode can be avoided. In PSCs these losses typically occur in the thin conducting oxide (TCO) layer of the substrate used for their assembly. Here we present a novel quasi-interdigitated electrode design, which has not previously been applied to photovoltaic devices. We use this to fabricate the first reported bc-DSCs with charge selective collection electrodes. Characterization of our bc-PSCs with confocal photoluminescence and photocurrent mapping techniques reveals that the photocurrent collection efficiency is most efficient in areas that are in close vicinity to both, the electron and hole collecting electrodes. This suggests that further efficiency improvements can be expected by reducing the typical feature size of the array (pitch) below the 2 microns used for this study. Furthermore we will present a novel strategy to fabricate bc-PSCs based on interdigitated metal electrodes by selectively introducing ultra-thin work-function modifying layers to both electrodes prior to the deposiiton of perovskite.
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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.
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.