Abstract
Abstract 5,6,11,12-Tetrachlorotetracene is a p-type semiconductor with high hole mobility due to its face-to-face molecular packing and improved electronic coupling. In this study, we demonstrate for the first time the solution processing of 5,6,11,12-tetrachlorotetracene with crystal alignment for the application of organic thin film transistors (OTFTs). Enhanced crystal orientation is achieved by confining the solvent evaporation in a restricted space, which introduces a capillary force and effectively aligns the 5,6,11,12-tetrachlorotetracene crystals. At the same time, a double solvent approach (chloroform/methanol) is utilized to tune the crystal size. The addition of polar hydroxyl groups from methanol weakens the interaction between the less polar 5,6,11,12-tetrachlorotetracene solutes and chloroform solvent, and leads to the formation of supramolecular aggregation. The aggregation acts as nucleation seeds for the crystallization of 5,6,11,12-tetrachlorotetracene semiconductor with enlarged crystal width. As a result, the 5,6,11,12-tetrachlorotetracene based OTFTs demonstrate a maximum hole mobility of 1.1 cm2/Vs, which is the highest value ever reported from the solution-processed OTFTs based on 5,6,11,12-tetrachlorotetracene semiconductor.
Original language | English (US) |
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Article number | 3033 |
Pages (from-to) | 191-196 |
Number of pages | 6 |
Journal | Organic Electronics |
Volume | 22 |
DOIs | |
State | Published - Jul 2015 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Biomaterials
- General Chemistry
- Condensed Matter Physics
- Materials Chemistry
- Electrical and Electronic Engineering