Proceedings of 13th Conference on Hybrid and Organic Photovoltaics (HOPV21)
Publication date: 11th May 2021
Energy consumption of building sector has been increasing rapidly due to population growth, improved levels of wealth and lifestyle changes. Moreover, the buildings and buildings construction sectors combined are responsible for 40 % of total carbon dioxide emissions. In order to reduce CO2 emission, energy generation from fossil fuel has to be replaced with renewable energy. Therefore, demands of the Building Integration Photovoltaics (BIPV), which makes possible the power generation from roofs, windows or facades have increased. In order to integrate PV into windows or facades of buildings, semitransparency or transparency of the solar cells is essential. The organometallic halide perovskite (PK) solar cells can be semitransparent by tuning their thickness and with transparent contact. Moreover, PK solar cells have achieved a very high efficiency (>25 % certified efficiency) and could be processed with low costs. Hence, PK solar cells satisfy almost all the requirement for BIPV applications.
In this talk we present our work on the semitransparent PK modules fully laser patterned. We optimized thickness and transmittance of sputtered ITO/Ag/ITO multilayers for transparent contact. The ITO/Ag/ITO multilayers have high transmittance of 75 % in visible region from 400nm to 800nm and very low sheet resistance of 4-5Ω/□. Combination of thin NiO layer and semiconducting polymer significantly reduced shunts on large area substrates and patterning by femtosecond laser increased geometric fill factor (GFF) over 95% compared to nanosecond laser. Finally, semitransparent perovskite modules achieved a power conversion efficiency of 15.6 % with an aperture area of 13.68 cm2. Moreover, there is almost no efficiency difference between semitransparent modules and 1 cm2 cells.
The authors gratefully acknowledge the financial support from the Korea Electric Power Coporation (South Korea) and EU Horizon 2020 grant H2020-LCE-2015-16-53296 CHEOPS.
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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.