Slot-Die-Coated Ternary Organic Photovoltaics for Indoor Light Recycling
Slot-Die-Coated Ternary Organic Photovoltaics for Indoor Light Recycling
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DOI：
10.1021/acsami.0c11809
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发表时间：
2020-09-30
影响因子：
9.5
通讯作者：
Welch, Gregory C.
中科院分区：
文献类型：
--
作者：
Farahat, Mahmoud E.;Laventure, Audrey;Welch, Gregory C.
基于槽模涂层（SD）三元共混物的高效有机光伏（OPVs）用于低强度室内光采集。对于在空气和环保溶剂中加工的活性层，我们的设备性能（在1个太阳和低光强度下）是氟-二噻吩-苯并噻唑供体聚合物基opv的最高报告值。将n环苝二亚胺二聚体受体加入给体聚合物（FBT）和富勒烯受体（PC61BM）的共混物中，得到三元体异质结共混物。在1个太阳光照下，基于SD三元的器件的功率转换效率（PCE）从6.8提高到7.7%。我们观察到器件的短路电流密度和开路电压的增强。在低光强发光器件照明（约2000勒克斯）下，基于三元的器件的PCE为14.0%，最大功率密度为79 μ W/cm(2)，而基于二元的器件的PCE为12.0%，最大功率密度为68 μ W/cm(2)。在相同光照条件下，自旋涂覆（SC）器件的PCE为15.5%，最大功率密度为88 μ W/cm2。总的来说，这些结果证明了SD三元混合系统在室内光采集方面的卓越前景，以及基于行业相关的微型模块涂层方法优化活性层的必要性。
Efficient organic photovoltaics (OPVs) based on slot-die-coated (SD) ternary blends were developed for low-intensity indoor light harvesting. For active layers processed in air and from eco-friendly solvents, our device performances (under 1 sun and low light intensity) are the highest reported values for fluoro-dithiophenyl-benzothiadiazole donor polymer-based OPVs. The N-annulated perylene diimide dimer acceptor was incorporated into a blend of donor polymer (FBT) and fullerene acceptor (PC61BM) to give ternary bulk heterojunction blends. SD ternary-based devices under 1 sun illumination showed enhanced power conversion efficiency (PCE) from 6.8 to 7.7%. We observed enhancement in the short-circuit current density and open-circuit voltage of the devices. Under low light intensity light-emitting device illumination (ca. 2000 lux), the ternary-based devices achieved a PCE of 14.0% and a maximum power density of 79 mu W/cm(2) compared to a PCE of 12.0% and a maximum power density of 68 mu W/cm(2) for binary-based devices. Under the same illumination conditions, the spin-coated (SC) devices showed a PCE of 15.5% and a maximum power density of 88 mu W/cm2. Collectively, these results demonstrate the exceptional promise of a SD ternary blend system for indoor light harvesting and the need to optimize active layers based on industry-relevant coating approaches toward mini modules.