超稳定有机光导材料分散体系的构建及高光敏单层光导器件  

Composition of super-stable organic photoconductive dispersion and high performance single-layered device

作　　者：李云梦 王世荣[1,2] 李祥高[1,2] 肖殷[1,2] 

机构地区：[1]天津大学化工学院,天津300072 [2]天津化学化工协同创新中心,天津300072

出　　处：《功能材料》2016年第1期1145-1152,1158,共9页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA030307);天津市科技支撑计划重点资助项目(13ZCZDGX00900);天津市应用基础及前沿技术研究计划资助项目(12JCYBJC30600)

摘　　要：将载流子产生与传输功能集成到一层的高性能正电性薄膜器件是新型激光有机光导体的发展趋势。由于成膜树脂、传输材料分子和载流子产生材料粒子之间的相互作用,使得成膜之前的分散体系极易团聚而产生沉降现象,导致光导器件的性能劣化。本文以聚苯乙烯-丙烯酰胺(PSAM)、聚苯乙烯(PS)、聚乙烯吡咯烷酮(PVP)和硬酯酸酰胺(SR)分别在二氯乙烷中对Y-酞菁氧钛(Y-TiOPc)粒子进行表面处理,获得稳定的分散体系,然后再与溶解空穴及电子传输材料的聚碳酸酯二氯乙烷溶液混合得到有机光导材料分散液。通过测试Y-TiOPc的粒径、ξ电位、光透过率和反射率,以及原子力显微成像分析等表征分散体系的稳定性。结果表明,采用该方法可获得长期稳定的PSAM@Y-TiOPc/TPD-m-TPD/DMDBQ/PC有机光导材料分散体系,制备的单层正电性有机光导器件具有优异的光导性能,V0=656.72V,E1/2=0.16μJ/cm2,Rd=29.10V/s,Vr=71.47V。Positive single-layered device is the research hotspot in the field of laser organic photoreceptor because of its high performance.The aggregation of Y-TiOPc,that occurs due to the interaction of film-forming resin,charge-transport molecules and charge-generation material particles,leads to performance deterioration of the device.In this paper,poly(acrylamide-co-styrene)(PSAM),polystyrene(PS),polyvinyl pyrrolidone(PVP)and stearamide(SR)were used for the surface treatment of Y-TiOPc in dichloroethane,respectively.And then the Y-TiOPc dispersion was mixed with the solution of polycarbonate in dichloroethane containing hole-transport materials and electron-transport materials to obtain a functional suspension.Particle size,ξpotential,transmittance,reflectance,and roughness were determined to investigate the stability of the dispersion.The results indicated that PSAM@Y-TiOPc particles could be well dispered in dichloroethane.And the positive single-layered device exhibited excellent photoconductivity,V20=656.72 V,E1/2=0.16μJ/cm,Rd=29.10V/s,Vr=71.47 V.

关 键 词：YGTiOPc 有机光导材料分散体系 光导器件 

分 类 号：TQ314[化学工程—高聚物工业] TQ577