Abstract
Electrode buffer layer has been extensively studied to improve the performance of organic field-effect transistor (OFET). Here, poly(methylmethacrylate) (PMMA) was employed as an electrode buffer layer between poly(3-hexylthiophene) (P3HT) layer and gold electrodes in OFETs. These OFETs exhibited nearly five-fold enhancement of hole mobility. Through atomic force microscope and grazing-incidence X-ray diffraction analyses, the performance enhancement was attributed to the uniformity and hydrophobicity of PMMA surface, which led to a remarkable reduction of contact resistance at P3HT/electrode interface. This study provides a facile strategy for the performance enhancement of OFET and insights into the essentiality of buffer layers.
Original language | English (US) |
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Article number | 111607 |
Journal | Applied Physics Letters |
Volume | 102 |
Issue number | 11 |
DOIs | |
State | Published - Mar 18 2013 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)