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Published on: October 6, 2020
Open-cellular organic semiconductor thin films by vertical co-deposition using sub-100 nm nanosphere templates
S Schumann1, S A F Bon, R A Hatton
1Department of Chemistry, University of Warwick, Coventry, UK CV4 7AL.
Summary
Researchers developed a novel method to create porous organic semiconductor films using sphere templates. This technique generates sub-100 nm open-cellular networks for applications in sensing and photovoltaics.
Area of Science:
- Materials Science
- Organic Electronics
- Nanotechnology
Background:
- Porous organic semiconductor thin films are crucial for advanced electronic devices.
- Existing fabrication methods often face limitations in scalability and pore control.
Purpose of the Study:
- To develop an efficient method for fabricating large-area porous organic semiconductor thin films.
- To create films with controlled sub-100 nm open-cellular networks.
Main Methods:
- Vertical co-deposition of sub-100 nm polystyrene sphere templates with organic semiconductors (small molecules or polymers).
- Solvent vapor-assisted removal of the sphere templates to create porosity.
Main Results:
- Successful generation of porous large-area organic semiconductor thin films.
- Achieved sub-100 nm open-cellular networks with high uniformity.
- Demonstrated the versatility of the method with both small molecule and polymeric semiconductors.
Conclusions:
- Vertical co-deposition and sphere removal is an excellent method for porous organic semiconductor film fabrication.
- The resulting films offer significant potential for applications in sensing and photovoltaics.
- This technique provides a scalable route to advanced organic electronic materials.

