Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
DOI: https://doi.org/10.29363/nanoge.hopv.2018.093
Publication date: 21st February 2018
Reducing Fresnel reflection losses with hole transporting layer that function as optical couplers in 4T tandems; Based on the understanding of Fresnel reflection in a full device stack, we demonstrate that parasitical energy losses can be minimized using wide-band gap semiconductors with beneficial refractive index as selective contacts. Furtheremore, and as opposed to previous reports, were the improvement of efficiency is done through energy-intensive deposition of both top and bottom electrodes, here, we demonstrate that solution-processed silver nanowires, a model composite for percolation- based electrodes, allows controlling the overall optical and electrical losses with outstanding precision by a simple spray coating process. As a result we present a solution-processed semitransparent perovskite-based solar cell with 17.1% efficiency showing 84.8% overall optical transmission averaged in the relevant range 800 nm to 1100 nm. Our devices allowed the elaboration of 4-terminal silicon/perovskite tandem devices with 26.7% efficiency.
Laminated 2T tandems, an alternative approach: We explore a multipurpose interconnection layer for the fabrication of monolithic perovskite/silicon tandem solar cells with high power conversion efficiency. The interconnection of independently processed silicon and perovskite sub-cells could be a simple add-on lamination step, alleviating the common fabrication complexity of perovskite/silicon tandem devices. We envision that this lamination concept can be extrapolated for the pairing of multiple photovoltaic technologies, creating a universal platform that facilitates mass production of tandem devices with high power conversion efficiency.
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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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