Molecular Orientation of Poly(3-hexylthiophene)/Fullerene Composite Thin Films

Autor: Khairul Anuar Mohamad, Fukuda Hisashi, Komatsu Natsuki, Uesugi Katsuhiro
Rok vydání: 2009
Předmět:
Zdroj: Extended Abstracts of the 2009 International Conference on Solid State Devices and Materials.
DOI: 10.7567/ssdm.2009.p-10-7
Popis: Focused on the relationship between the molecular orientation and the electrical performance of poly(3-hexylthiophene)/[6,6]-phenyl C61-butyric acid methyl ester (P3HT/PCBM) composite thin films to elucidate the effect of changing amount of PCBM in P3HT:PCBM by weight ratio in organic solution has been studies. The P3HT/PCBM composite thin films were investigated by an electron spin resonance (ESR) and X-ray diffraction (XRD) to reveal the film molecular and structure orientation. It was observed that the composite films with a small amount of PCBM were capable of altering the molecular structure of P3HT. It was also observed that the presence of a small amount of PCBM molecules improved the device performance of P3HT thin film transistors (TFTs), which provide the mobility on the order of 10-3 cm2 V -1 s-1 with an on/off current ratio of 10-4. The threshold voltage was also higher than of pure P3HT TFTs. © 2010 The Japan Society of Applied Physics.
Databáze: OpenAIRE