Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
DOI: https://doi.org/10.29363/nanoge.hopv.2022.176
Publication date: 20th April 2022
Perovskite solar cells (PSC) are known as the record breaker technology among emerging photovoltaics, achieving up to 25.5% of power conversion efficiency (PCE) [1]. One of the major benefits of PSCs is the opportunity of employment of flexible substrates, which expand the potential applications of this technology. Recently, flexible perovskite solar cells (flex-PSCs) achieved over 20% PCE on small scale[2,3] and up to 15.5% PCE on 100 cm2 modules [2], with the perovskite layer only deposited via blade coating and the remaining layers by spin coating.
To demonstrate flex-PSC on large scale and make the technology appealing to industry, reliable and sustainable fabrication routes, compatible with high throughput roll-to-roll manufacture, must be developed. Thus far, most studies of flex-PSCs are focusing on small-scale fabrication methods and hazardous solvents such as dimethylformamide (DMF), n-methyl-2-pyrrolidone (NMP), and 2-methoxyethanol (2-ME).
Here, we present flex-PSC with device architecture of PET/ITO/SnO2/Cs0.1FA0.9Pb(I0.94Br0.06)3/ PTAA/Au, in which both the electron transport layer and the absorber are deposited by blade coating method on 5 ×7 cm2 flexible substrates. Notably, the perovskite layer is deposited in ambient air via a double-step air-flow assisted doctor blading method, starting from our previous work[4] and changing solvent system, using a DMF-free solvent system by using only dimethyl sulfoxide (DMSO). By fine-tuning the coating parameters, we obtained promising results in terms of PCE reaching 12.7% for 2.5 × 2.5 cm2 dimension cells obtained from cutting large-area substrates. In addition, to demonstrate the scalability of this double-step perovskite deposition method, we deposited films on flexible 10 × 10 cm2 substrates.
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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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