Mixed P3HT/PCBM Organic Thin-Film Transistors： Relation between Morphology and Electrical Characteristics

作     者：Khairul Anuar Mohamad Afishah Alias Ismail Saad Bablu Kumar Gosh Katsuhiro Uesugi Hisashi Fukuda 

作者机构：Nanoelectronics Device and Materials Research Group Universiti Malaysia Sabah Sabah 88400 Malaysia Muroran Institute of Technology Muroran 050-8585 Japan 

出 版 物：《Journal of Chemistry and Chemical Engineering》 (化学与化工（英文版）)

年 卷 期：2014年第8卷第5期

页      面：476-481页

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：有机薄膜晶体管 表面形态 电气特性 混合 紫外可见分光光度计 共混物薄膜 ESR分析 3-己基噻吩 

摘      要：The mixed P3HT (poly(3-hexylthiophene)) and [6,6]-PCBM (phenyl C 61 -butyric acid methyl ester) organic thin films were investigated for electronic structure using UV-Vis spectrophotometer and PESA (photo-electron spectroscopy in air). Furthermore, ESR (electron spin resonance) and AFM (atomic force microscopy) were used to investigate the surface morphology and molecular orientation, respectively. ESR analysis indicated the molecular orientation of the P3HT crystalline in the blend thin films, which the crystalline oriented normal to the substrate with distribution of 35o. AFM images indicated that the surface morphology of P3HT film was affected by the presence of PCBM nanoparticles. Solution-processed OTFTs (organic thin-film transistors) based on P3HT/PCBM blend thin film in a top source-drain contact structure was fabricated, and the electrical characteristics of the devices were also investigated. A unipolar property with p-channel characteristics were obtained in glove box measurement.