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slot-die coated large-area flexible all-polymer solar cells by nonhalogenated solvent

Nano Research 2023年第12期16卷 13008-13013页

作者： Yi-Fan Shen Jianqi Zhang Chenyang Tian Dingding Qiu Zhixiang Wei CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Sino-Danish Center for Education and Research Sino-Danish CollegeUniversity of Chinese Academy of SciencesBeijing 100049China

The slot-die coating is recognized as the most compatible method for the roll-to-roll(R2R)processing of large-area flexible organic solar cells(OSCs).However,the photovoltaic performance of the large-area flexible all-polymer solar cells was significantly lagging behind that of polymer donors with small molecule non-fullerene acceptors devices.In this work,the 1 cm^(2) flexible device of an all-polymer system,PTQ10:PYF-T-o,fabricated by slot-die coating,achieves an excellent efficiency of 11.24%via controlling the coating temperatures.It is found that,compared with the donor,the crystallinity of PYF-T-o plays a crucial role in device performance.The all-polymer flexible devices show superior mechanical bending stability,maintaining an efficiency of over 95%of the initial value during a 1000-cycle bending test.

关键词： organic solar cells slot-die coating non-halogenated solvent flexible large-area devices morphology control

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Fully Roll‑to‑Roll Processed Efficient Perovskite Solar Cells via Precise Control on the Morphology of PbI_(2):CsI Layer

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Nano-Micro Letters 2022年第5期14卷 110-121页

作者： Hengyue Li Chuantian Zuo Dechan Angmo Hasitha Weerasinghe Mei Gao Junliang Yang Hunan Key Laboratory of Nanophotonics and Devices School of Physics and ElectronicsCentral South UniversityChangsha 410083People’s Republic of China Flexible Electronics Laboratory CSIRO ManufacturingClaytonVIC 3168Australia

Perovskite solar cells(PSCs)have attracted tremendous attention as a promising alternative candidate for clean energy generation.Many attempts have been made with various deposition techniques to scale-up manufacturing.slot-die coating is a robust and facile deposition technique that can be applied in large-area roll-to-roll(R2R)fabrication of thin film solar cells with the advantages of high material utilization,low cost and high throughput.Herein,we demonstrate the encouraging result of PSCs prepared by slot-die coating under ambient environment using a twostep sequential process whereby PbI_(2):CsI is slot-die coated first followed by a subsequent slot-die coating of organic cations containing solution.A porous PbI_(2):CsI film can promote the rapid and complete transformation into perovskite film.The crystallinity and morphology of perovskite films are significantly improved by optimizing nitrogen blowing and controlling substrate temperature.A power conversion efficiency(PCE)of 18.13%is achieved,which is promising for PSCs fabricated by two-step fully slot-die-coated devices.Furthermore,PSCs with a 1 cm2 area yield a champion PCE of 15.10%.Moreover,a PCE of 13.00%is obtained on a flexible substrate by the roll-to-roll(R2R)coating,which is one of the highest reported cells with all layers except for metal electrode fabricated by R2R process under ambient condition.

关键词： Perovskite solar cells slot-die coating Roll-to-roll Ambient condition Flexible

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High-Performance Perovskite Solar Cells Fabricated via Two-step slot-die coating in Ambient Condition

High-Performance Perovskite Solar Cells Fabricated via Two-s...

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第七届新型太阳能电池材料科学与技术学术研讨会

作者： Hengyue Li Mei Gao Junliang Yang State Key Laboratory of Powder Metallurgy School of Physics and ElectronicsCentral South University Flexible Electronics Laboratory CSIRO Manufacturing

Perovskite solar cells(PSCs) have made significant progress and attracted tremendous attention as a promising candidate for the generation of clean energy due to their intrinsic properties of long carrier diffusion lengths,high absorption coefficients,flexible bandgap tuning and defect tolerance.slot-die coating is a robust deposition technique which can be applied in large-area,roll-to-roll(R2R) printing of perovskite with high material utilization,low cost and high throughput.Herein,we demonstrate the encouraging result of perovskite solar cells prepared by slot-die coating under ambient condition.A power conversion efficiency(PCE) of 18.36% has been achieved,which is one of the highest performance for perovskite films fabricated by two-step slot-die coating in air.The fully slot-die coating process was also explored leading to solar cells devices with a max PCE of 18.13%.Furthermore,devices with 1 cm area yield a champion PCE of 15.1%.

关键词： Perovskite solar cells slot-die coating Ambient condition

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Layer-by-layer slot-die coated high-efficiency organic solar cells processed using twin boiling point solvents under ambient condition

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Nano Research 2021年第11期14卷 4236-4242页

作者： Yu Yang Erming Feng Hengyue Li Zichao Shen Wanrong Liu Jingbo Guo Qun Luo Jidong Zhang Guanghao Lu Changqi Ma Junliang Yang Hunan Key Laboratory for Super-microstructure and Ultrafast Process School of Physics and ElectronicsCentral South UniversityChangsha410083China Frontier Institute of Science and Technology Xi’an Jiaotong UniversityXi’an710054China Printable Electronics Research Center Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou215123China Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchun130022China

Layer-by-layer (LbL) strategy has been developed to form bulk heterojunction (BHJ) structure for processing efficient organic solar cells (OSCs). Herein, LbL slot-die coating with twin boiling point solvents (TBPS) strategy was developed to fabricate highly efficient OSCs, which matches with large-scale, high throughput roll-to-roll (R2R) industrialized mass process. The TBPS strategy could produce high-quality thin film without any additive, leading to the optimized vertical phase separation with interpenetrating nanostructures, as well as the enhanced charge transport and extraction. Thus, the power conversion efficiency up to 14.42% was achieved for [(2,6-(4,8-bis(5-(2-ethylhexyl-3-fluoro)thiophen-2-yl)-benzo [1,2-b:4,5-b′]dithiophene))-alt-(5,5-(1′,3′-di-2-thienyl-5′,7′-bis(2-ethylhexyl)benzo[1′,2′-c:4′,5′-c′]dithiophene-4,8-dione)]:2,2′-((2Z,2′Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2″,3″:4″,5″]thieno[2′,3′:4,5]pyrrolo[3,2-g]thieno[2′,3′:4,5]thieno[3,2-b]indole-2,10-diyl)bis(methanylylidene)) bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile (PM6:Y6) OSCs fabricated via sequentially LbL slot-die coating using the TBPS strategy under ambient condition. The research provides a potential route for industrialized production of high-efficiency and large-area OSC devices.

关键词： organic solar cells slot-die coating twin boiling point solvent layer-by-layer(LbL) vertical phase separation

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Flexible perovskite solar cells based on green,continuous roll-to-roll printing technology

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Journal of Energy Chemistry 2018年第4期27卷 971-989页

作者： Wei Zi Zhiwen Jin Shengzhong Liu Baomin Xu Energy-saving Building Materials Innovative Collaboration Center of Henan Province.Xinyang Normal University Xinyang 464000HenanChina Department of Materials Science and Engineering.Southern University of Science and Technology Shenzhen 518055GuangdongChina Dalian Institute of Chemical Physics.Dalian National Laboratory for Clean Energy Chinese Academy of SciencesDalian 116023.LiaoningChina Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of EducationShaanxi Engineering Lab for Advanced Energy TednologySchool of Materials Science and EngineeringShaanxi Normal University.Xi'an 710119ShaanxiChina

By designing and fabricating thin film electronic devices on a flexible substrate instead of more commonly used rigid substrate, flexible electronics produced has opened a field of special applications. In this article, we first reviewed available products that may be used as flexible substrates, their characteristics and unique advantages as supporting material for flexible electronic devices. Secondly, flexible perovskite solar cell is examined in detail, with special focus on its potential large-scale fabrication processes. In particular, a comprehensive review is provided on low cost solution printing techniques that is viewed highly as a viable tool for potential commercialization of the perovskite solar cells. Furthermore, a summary is given on green processing for the solution printing production of flexible perovskite devices.

关键词： Flexible substrate Perovskite solar cell Doctor blading slot-die coating Inkier printing

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Fully Roll-to-Roll Processed Efficient Perovskite Solar Cells via Precise Control on the Morphology of PbI2:CsI Layer

Fully Roll-to-Roll Processed Efficient Perovskite Solar Cell...

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第九届新型太阳能材料科学与技术学术研讨会

作者： Hengyue Li Chuantian Zuo Dechan Angmo Hasitha Weerasinghe Mei Gao Junliang Yang School of Physics and Electronics Central South University Flexible Electronics Laboratory CSIRO Manufacturing

Flexible perovskite solar cells(f-PSCs) have attracted tremendous attention as a promising alternative candidate for clean energy generation due to their advantages of light weight and flexibility [1]. slot-die coating is a robust and facile deposition technique that can be applied in large-area roll-to-roll(R2 R) fabrication of thin film solar cells with the advantages of high material utilization, low cost and high throughput [2]. Herein, we demonstrate the encouraging result of f-PSCs prepared by slot-die coating under ambient environment using a two-step sequential process whereby PbI:CsI is slot-die coated first followed by a subsequent slot-die coating of organic cations containing solution. A PCE of 13.00% was obtained on a flexible substrate by the R2 R coating, which is one of the highest reported cells with all layers except for metal electrode fabricated by R2 R process under ambient condition [3].

关键词： Perovskite solar cells slot-die coating roll-to-roll ambient condition flexible

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