Kong Minseon, Kim Kyeong Seok, Nga Nguyen Van, Lee Yeonju, Jeon Yu Seong, Cho Yunsung, Kwon Younghwan, Han Yoon Soo
School of Advanced Materials and Chemical Engineering, Daegu Catholic University, Gyeongbuk 38430, Korea.
Department of Chemical Engineering, Daegu University, Gyeongbuk 38435, Korea.
Nanomaterials (Basel). 2020 Dec 15;10(12):2516. doi: 10.3390/nano10122516.
The leakage and volatilization of liquid electrolytes limit the commercialization of dye-sensitized solar cells (DSCs). As solid-state (ss) hole-transporting materials, free from leakage and volatilization, biscarbazole-based polymers with different molecular weights (PBCzA-H (21,200 g/mol) and PBCzA-L (2450 g/mol)) were applied in combination with additives to produce ssDSCs. An ssDSC with PBCzA-H showed a better short-circuit current (), open-circuit voltage (), and fill factor () than a device with PBCzA-L, resulting in 38% higher conversion efficiency. Compared to the PBCzA-L, the PBCzA-H with a higher molecular weight showed faster hole mobility and larger conductivity, leading to elevations in via rapid hole transport, via rapid hole extraction, and via lowered series and elevated shunt resistances. Thus, it is believed that PBCzA-H is a useful candidate for replacing liquid electrolytes.
液体电解质的泄漏和挥发限制了染料敏化太阳能电池（DSC）的商业化。作为无泄漏和挥发问题的固态空穴传输材料，具有不同分子量的双咔唑基聚合物（PBCzA-H（21,200 g/mol）和PBCzA-L（2450 g/mol））与添加剂组合应用于制备固态DSC。与采用PBCzA-L的器件相比，采用PBCzA-H的固态DSC表现出更好的短路电流（）、开路电压（）和填充因子（），转换效率高出38%。与PBCzA-L相比，分子量更高的PBCzA-H表现出更快的空穴迁移率和更大的电导率，通过快速的空穴传输提高了，通过快速的空穴提取提高了，通过降低串联电阻和提高并联电阻提高了。因此，人们认为PBCzA-H是替代液体电解质的有用候选材料。
