Abstract Large area processing of organic photovoltaic cells and modules is a key step towards commercialization. At the same time, the scale-up of fabrication entails careful evaluation and selection of solvents, and optimization of processing parameters. It has been proven that using proper processing additives in polymer:PCBM bulk-heterojunction solution is one of the most effective strategies to improve the performance of organic photovoltaic cells. Here we report a new transition solvent strategy of using non-halogenated solvents to fabricate PDTSTPD: PC71BM based active layers. This strategy uses a combination of miscible good main solvent such as 1,2,4-trimethylbenzene and coadditives such as diphenyl ether (DPE) and 1-methylnaphtalene (MeN) for middle molecular weight PDTSTPD, or 1,8-diiodooctane (DIO) and MeN for high molecular weight PDTSTPD to tune the nano-scale morphology of the active layer during the film drying process. Inverted organic photovoltaic cells with an active area of 1cm2 on PET substrate fabricated by a blade coating process using the formulated ink have demonstrated a power conversion efficiency up to 5 %.

中文翻译：

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使用无卤主溶剂刮涂工艺的有机光伏活性层油墨配方

摘要 有机光伏电池和模块的大面积加工是迈向商业化的关键一步。同时，制造的放大需要仔细评估和选择溶剂，以及优化工艺参数。已经证明，在聚合物：PCBM 本体异质结溶液中使用适当的加工添加剂是提高有机光伏电池性能的最有效策略之一。在这里，我们报告了一种使用非卤化溶剂制造 PDTSTPD 的新过渡溶剂策略：基于 PC71BM 的活性层。该策略使用可混溶的良好主溶剂（如 1,2,4-三甲苯）和共添加剂（如二苯醚 (DPE) 和 1-甲基萘 (MeN)）的组合，用于中等分子量的 PDTSTPD，或 1, 8-二碘辛烷 (DIO) 和 MeN 用于高分子量 PDTSTPD，以在薄膜干燥过程中调整活性层的纳米级形态。PET 基板上的活性面积为 1cm2 的倒置有机光伏电池通过刮涂工艺使用配制的墨水制成，其功率转换效率高达 5%。