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1Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing, 100190, P. R. China.
Advanced Materials (Deerfield Beach, Fla.)
|September 3, 2013
Summary
Researchers created aligned organic semiconductor microwire arrays using a novel fluid drying technique. These micro-architectures enable high-performance organic field-effect transistors for advanced organic electronics.
Area of Science:
- Materials Science
- Organic Electronics
- Nanotechnology
Background:
- Organic semiconductor materials are crucial for developing flexible and low-cost electronic devices.
- Fabricating precisely aligned one-dimensional (1D) microstructures remains a significant challenge in organic electronics.
- Existing methods often struggle to achieve high-quality, ordered arrays necessary for optimal device performance.
Purpose of the Study:
- To develop a novel method for fabricating precisely aligned organic semiconductor microwire arrays.
- To investigate the potential of these aligned microwire arrays in high-performance organic field-effect transistors (OFETs).
- To advance the development of 1D microstructures for next-generation organic electronic applications.
Main Methods:
- Utilized a "liquid-liquid-solid" (LLS) approach combined with superoleophobic surfaces.
- Employed directed fluid drying to control the alignment and morphology of organic semiconductor microwires.
- Fabricated and characterized organic field-effect transistors using the synthesized aligned microwire arrays.
Main Results:
- Successfully fabricated precisely aligned organic-liquid-soluble semiconductor microwire arrays.
- Achieved high mobilities exceeding 10 cm(2)·V(-1)·s(-1) in the fabricated OFETs.
- Demonstrated a high current on/off ratio of more than 10^6 in the devices.
Conclusions:
- The LLS-directed fluid drying method is effective for creating highly aligned organic semiconductor 1D microstructures.
- The aligned microwire arrays enable the fabrication of high-performance OFETs.
- This work provides a promising pathway for the development of advanced organic electronic devices.
