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Toward High Efficiency Water Processed Organic Photovoltaics: Controlling the Nanoparticle Morphology with Surface Energies
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2023-05-17 , DOI: 10.1002/aenm.202300249
Hugo Laval 1 , Alexandre Holmes 2 , Matthew A. Marcus 3 , Benjamin Watts 4 , Gwenaël Bonfante 5 , Marc Schmutz 6 , Elise Deniau 2, 7 , Robin Szymanski 1 , Christine Lartigau‐Dagron 2 , Xiaoxue Xu 8 , Julie M. Cairney 9, 10 , Kazuhiko Hirakawa 5 , Fumiyasu Awai 11 , Takaya Kubo 11 , Guillaume Wantz 1 , Antoine Bousquet 2 , Natalie P. Holmes 9, 10, 12 , Sylvain Chambon 1, 5
Affiliation  

Here efficient organic photovoltaic devices fabricated from water-based colloidal dispersions with donor:acceptor composite nanoparticles achieving up to 9.98% power conversion efficiency (PCE) are reported. This high efficiency for water processed organic solar cells is attributed to morphology control by surface energy matching between the donor and the acceptor materials. Indeed, due to a low interfacial energy between donor and the acceptor, no large phase separation occurs during the nanoparticle formation process as well as upon thermal annealing. Indeed, synchrotron-based scanning transmission X-ray microscopy reveals that the internal morphology of composite nanoparticles is intermixed as well as the active layer morphology after thermal treatment. The PCE of this system reaches 85% that of devices prepared from chlorinated solvent. The gap between water-based inks and organic solvent-based inks gets narrower, which is promising for the development of eco-friendly processing and fabrication of organic photovoltaics.

中文翻译:

迈向高效水处理有机光伏:用表面能控制纳米颗粒形态

据报道,由水基胶体分散体与供体:受体复合纳米粒子制成的高效有机光伏器件实现了高达 9.98% 的功率转换效率 (PCE)。水处理有机太阳能电池的这种高效率归因于供体和受体材料之间表面能匹配的形态控制。事实上,由于供体和受体之间的低界面能,在纳米颗粒形成过程以及热退火过程中不会发生大的相分离。事实上,基于同步加速器的扫描透射X射线显微镜揭示了复合纳米颗粒的内部形态以及热处理后的活性层形态是混合的。该体系的PCE达到氯化溶剂制备器件的85%。
更新日期:2023-05-17
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