An electron-rich fused indoloindole-based poly(indoloindole-selenophene vinylene selenophene) was synthesized and characterized. Soxhlet can be obtained by continuously purifying the product with a specific solvent and obtaining a pure polymer with a high concentration. Molecular weight is affected by the vapor pressure of marginal solvent, and the polymer was fractionated using tetrahydrofuran, chloroform, and chlorobenzene. Solubility is closely related to the morphology of bulk heterojunction and device parameters. In the solution process of fabricating the organic solar cell, securement of solubility has a great effect on the performance of the device, because morphology and orientation of a photo-active layer which significantly affect charge transport in the device. Since tetrahydrofuran (THF) Soxhlet solvents have high vapor pressure and appropriate solubility parameters, THF induced the best solubility of P-IDI-SVS materials for organic solvents. And through additive optimization, the performance of the device based on P-IDI-SVS from THF-Soxhlet extraction was enhanced. This is expected to be a meaningful study because the effect on solubility of Soxhlet solvent suggests factors to be considered in the solution process in organic solar cell research. In addition, surface modified bulk heterojunction was observed using atomic force microscopy, photoluminescence, time-correlated single photon counting and Raman spectroscopy analysis.

中文翻译：

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选择性索氏萃取法可增强光伏应用中新合成的聚（吲哚并吲哚-硒烯-亚乙烯基亚硒基）供体的溶解度

合成并表征了富电子稠合的吲哚并吲哚基聚（吲哚并吲哚-硒烯亚乙烯基亚硒基）。索格利特可以通过用特定的溶剂连续纯化产物并获得高浓度的纯聚合物来获得。分子量受边际溶剂蒸气压的影响，并使用四氢呋喃，氯仿和氯苯对聚合物进行分馏。溶解度与本体异质结的形态和器件参数密切相关。在制造有机太阳能电池的溶液工艺中，溶解度的确保对器件的性能有很大影响，因为光敏层的形态和取向会显着影响器件中的电荷传输。由于四氢呋喃（THF）索氏溶剂具有较高的蒸气压和适当的溶解度参数，因此THF诱导了P-IDI-SVS材料对有机溶剂的最佳溶解度。并通过添加剂优化，增强了基于THF-索氏提取的P-IDI-SVS的设备的性能。预计这将是一项有意义的研究，因为对索氏溶剂的溶解度的影响表明了有机太阳能电池研究中溶液过程中应考虑的因素。另外，使用原子力显微镜，光致发光，时间相关的单光子计数和拉曼光谱分析观察到表面改性的本体异质结。增强了基于THF-索氏提取的P-IDI-SVS的设备的性能。预计这将是一项有意义的研究，因为对索氏溶剂的溶解度的影响表明了有机太阳能电池研究中溶液过程中应考虑的因素。另外，使用原子力显微镜，光致发光，时间相关的单光子计数和拉曼光谱分析观察到表面改性的本体异质结。增强了基于THF-索氏提取的P-IDI-SVS的设备的性能。预计这将是一项有意义的研究，因为对索氏溶剂的溶解度的影响表明了有机太阳能电池研究中溶液过程中应考虑的因素。另外，使用原子力显微镜，光致发光，时间相关的单光子计数和拉曼光谱分析观察到表面改性的本体异质结。