原位聚合聚(3,4-乙烯二氧噻吩)：π共轭聚电解质应用于聚合物太阳能电池空穴传输层  

In situ Polymerization of PEDOT:π-Conjugated Polyelectrolyte and Application as Hole Transport Layer in Polymer Solar Cells

作　　者：肖玉娟 何倩楠 周环宇 徐海涛 谈利承 陈义旺 

机构地区：[1]南昌大学化学学院,南昌330031 [2]江西省新能源化学重点实验室/高分子研究所,南昌330031

出　　处：《高分子学报》2018年第2期257-265,共9页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号51672121,51425304); 江西省科技合作领域重点研发计划(项目号20161BBH80044)资助项目

摘　　要：以带磺酸基团的π共轭聚电解质为模板,采用化学氧化还原方法制备了在水相中稳定分散的聚(3,4-乙烯二氧噻吩)(PEDOT)与聚电解质的复合物,并用作聚合物太阳能电池的空穴传输层.通过傅里叶变换红外光谱(FTIR)、紫外可见光谱(UV-Vis)、紫外光电子能谱(UPS)、原子力显微镜(AFM)、透射电子显微镜(TEM)和接触角等对聚(3,4-乙烯二氧噻吩):聚苯乙烯磺酸(PEDOT:PSS)和复合物薄膜的形貌和光电性能进行测试与表征.结果表明,相比于PEDOT:PSS,PEDOT:聚电解质复合物作为空穴传输层,具有合适的能级结构、高达95%的透光率(30 nm)、更疏水的表面形貌以及更高的空穴迁移率,有利于与活性层形成欧姆接触并提高空穴的注入和收集效率,进而提高器件的光伏性能.Poly（3,4-ethylenedioxythiophene）（PEDOT） is usually dispersed in water by incorporating polystyrene sulfonate（PSS） as a charge compensator and a template for polymerization.The polymerization behavior of 3,4-ethylenedioxythiophene（EDOT） without assistance of insulating PSS was explored.Due to their semiconducting and hydrophilic characteristics,π-conjugated polyelectrolytes with sulfonic acid groups,namely PCPDT-T and PCPDT-2T,were used as template for in situ oxidative polymerization of PEDOT.The obtained PEDOT：polyelectrolyte composites showed good dispersibility in aqueous solution,which was used as hole transport layer（HTL） in polymer solar cells（PSCs）.The morphologies and photoelectric properties of PEDOT：PSS and PEDOT：polyelectrolyte composites were characterized by Fourier transform infrared spectroscopy,ultraviolet-visible spectroscopy,ultraviolet photoelectron spectroscopy,atomic force microscopy,transmission electron microscopy and contact angle test,respectively.PEDOT：polyelectrolyte composites displayed suitable energy level,transmittance up to 95%（30 nm）,hydrophobic surface morphology,as well as superior hole mobility,which were in favour of forming ？ contact with the active layer and increasing the injection and collection efficiency of the holes.Thus,improving the device photovoltaic performance.The current density-voltage（J-V） characteristics of the PSCs with the structure of Glass/ITO/HTL/PTB7-Th：PC71 BM/PFN/Al were measured under one standard sun by solar simulator with an Air Mass 1.5 global（AM 1.5 G） and an irradiation intensity of 100 mW/cm^2.Compared to the photovoltaic characteristics for PEDOT：PSS based device,PSCs with PEDOT：T（1：2） as HTL yielded the highest power conversion efficiency（PCE） of 8.6% with a short current density（JSC） of 18.07 m A/cm^2,open circuit voltage（VOC） of 0.77 and fill factor（FF） of 61.31%,respectively.Compared to that of PEDOT：PSS,the obvious increased JSC for PEDOT：polyelectrolyte compos

关 键 词：聚(3 4-乙烯二氧噻吩) 聚电解质 原位聚合 聚合物太阳能电池 复合材料 

分 类 号：O633.5[理学—高分子化学] TM914.4[理学—化学]