微通道搅拌优化空穴注入用PEDOT:PSS制备及材料表征

Preparation of PEDOT:PSS for Hole Injection by Microchannel Stirring and the Material Characterization

改进了聚(3,4-乙烯基二氧噻吩)/聚(苯乙烯磺酸盐)(PEDOT:PSS)的合成技术。采用对甲苯磺酸铁[(Fe(OTs)_(3))]作为催化剂,并在反应中引入磷酸三乙酯作为水溶性助剂并辅助催化反应且消泡稳黏,以优化PEDOT:PSS的成膜性能。同时,利用微通道搅拌方法制备了均匀粒径(<50 nm)的OE-004 PEDOT:PSS分散液,然后将OE-004应用于器件表征以全面评估OE-004与Clevios P VP AI 4083的性能差异并验证其适用性。研究结果表明,OE-004材料因更均匀的粒径尺寸和优化的微观配比,在PM6:L8-BO器件中表现出与Clevios P VP AI 4083基本一致的优秀空穴传输性能,实现了17.72%的最佳光电转换效率。器件复合过程研究表明OE-004呈现出良好的空穴提取和传输能力,在抑制器件内部的单分子复合或陷阱辅助复合方面表现出色。这些结果清晰验证了OE-004在有机太阳能电池中的适用性,其优异性能为空穴用PEDOT:PSS提供了理想的国产产品。

This study improved the synthesis technology of poly(3,4-vinyldioxythiophene)/poly(styrene sulfonate)(PEDOT:PSS).The film formation performance of PEDOT:PSS was optimized by using iron p-toluenesulfonate as a catalyst and introducing triethyl phosphate as a water-soluble additive with auxiliary catalytic,defoaming and stabilizing viscosity effect.A dispersion of OE-004 PEDOT:PSS with uniform particle size(<50 nm)was prepared using a micro-channel stirring method.OE-004 was subsequently employed for device characterization to assess performance disparities with Clevios P VP AI 4083 and validate its applicability.The results demonstrate that OE-004 can be utilized in PM6:L8-BO devices,exhibiting excellent hole transport performance that is largely consistent with Clevios P VP AI 4083,yielding the highest photoelectric conversion efficiency of 17.72%.The investigation into the recombination process reveals that OE-004 possesses effective hole extraction and transport capabilities,along with outstanding performance in suppressing single-molecule recombination or trap-assisted recombination within the device.These findings unequivocally validate the suitability of OE-004 in organic solar cells.OE-004 exhibits outstanding performance and serves as an ideal domestic product for PEDOT:PSS.