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Fully transparent conformal organic thin-film transistor array and its application as LED front driving
Nan Cui1, Hang Ren, Qingxin Tang
1Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory of UV-Emitting Materials and Technology (Northeast Normal University), Ministry of Education, Changchun 130024, P. R. China. tangqx@nenu.edu.cn ycliu@nenu.edu.cn.
Nanoscale
|February 1, 2018
Summary
Researchers developed a transparent organic transistor array using a metallic grid and solution-processed C8-BTBT film. This technology offers high transparency and stability for flexible displays and electronics.
Area of Science:
- Organic electronics
- Materials science
- Semiconductor physics
Background:
- Transparent electronics are crucial for next-generation displays and interfaces.
- Organic thin-film field-effect transistors (OTFTs) offer potential for low-cost, large-area fabrication.
- Achieving high performance and stability in transparent OTFTs remains a challenge.
Purpose of the Study:
- To demonstrate a fully transparent conformal organic thin-film field-effect transistor (OTFT) array.
- To utilize a photolithography-compatible ultrathin metallic grid gate electrode.
- To employ a solution-processed C8-BTBT film for high-performance transparent electronics.
Main Methods:
- Fabrication of an OTFT array using a metallic grid gate electrode and solution-processed C8-BTBT.
- Characterization of the OTFT array's optical transparency, electrical performance, and stability.
- Demonstration of the array's adhesion to both flat and curved surfaces.
Main Results:
- Achieved >80% optical transparency across the visible spectrum.
- Exhibited high charge carrier mobility up to 2 cm2 V-1 s-1.
- Demonstrated excellent on/off ratio (105-106), switching current (>0.1 mA), and light stability.
- Showcased conformal adhesion to flat and curved light-emitting diodes (LEDs).
Conclusions:
- The developed transparent conformal OTFT array shows high performance and stability.
- Solution-processed wide-bandgap organic semiconductors are suitable for transparent electronics.
- Promising applications in large-scale transparent conformal active-matrix displays and flexible electronics.
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