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Solution-Processed Organic and Halide Perovskite Transistors on Hydrophobic Surfaces
Jeremy W Ward1,2, Hannah L Smith1,3, Andrew Zeidell1
1Department of Physics, Wake Forest University , Winston-Salem, North Carolina 27109, United States.
ACS Applied Materials & Interfaces
|May 10, 2017
Summary
Researchers developed a protein solution to enhance surface wettability for solution-processable electronics. This method improves organic field-effect transistors (OFETs) and perovskite field-effect transistors (HTP-FETs) on flexible substrates with minimal impact on performance.
Area of Science:
- Materials Science
- Organic Electronics
- Surface Chemistry
Background:
- Solution-processable electronic devices offer low cost and flexibility.
- Hydrophobic surfaces of constituent layers hinder fabrication.
- Improving surface wettability is crucial for device performance.
Purpose of the Study:
- To modify surface properties of fluoropolymer dielectrics using a protein solution.
- To enhance the wettability of Cytop for solution-processed electronics.
- To investigate the impact of surface modification on device performance.
Main Methods:
- Utilized a protein solution to engineer a hydrophilic surface on Cytop.
- Incorporated the modified dielectric into bottom-gate organic field-effect transistors (OFETs).
- Fabricated hybrid organic-inorganic trihalide perovskite field-effect transistors (HTP-FETs) on flexible substrates.
Main Results:
- Successfully improved the wettability of the fluoropolymer dielectric.
- Engineered hydrophilic surfaces were integrated into OFETs and HTP-FETs.
- Minimal increase in trap density at the semiconductor-dielectric interface was observed.
Conclusions:
- Protein-mediated surface modification enables efficient fabrication of solution-processed electronics.
- The approach yields devices with good charge carrier mobilities and low hysteresis.
- This method is compatible with flexible substrates and various device architectures.
