Work

Electrochemical Erasing Using a Polymer Lithography Editor for the Fabrication of Photoactive Devices

Year: 2019

Type: article

Abstract: Electrochemical erasing of conductive coatings at microscale for the fabrication of functional devices on flexible and hard surfaces is demonstrated. The nanoporous pyramidal-shaped nano- and microscale polyacrylamide hydrogel PLE probes allowed delivery of electrochemical etchants to the surface, providing on-demand maskless patterning at microscale. Highly efficient erasing (silver and copper metals erasing efficiency ≈ 100%), areal erasing rate ≈ 80 μm 2 /s, and pressure dependent spatial erasing feature dimensions between 3 μm to many tens of microns on metal surfaces allowed for the fabrication of microelectrodes of various geometries. Overall, PLE-based microscale erasing allowed for rapid and accessible fabrication of organic electron–hole carrier pair-based microphotodetector, as well as the assembly of LED on flexible and rigid ITO substrates.

Source: ACS Applied Electronic Materials

DOI: 10.1021/acsaelm.9b00099

Authors: Nathalie Becerra-Mora, Annie Y. Vargas-Lizarazo, Connor Orrison, Monica Barron, Rajesh P. Balaraman, Punit Kohli

Institutions: Southern Illinois University Carbondale, Old Dominion University, Indiana University – Purdue University Indianapolis

Language: English

Topic: Nanofabrication and Lithography Techniques

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, National Institutes of Health, National Institute of General Medical Sciences

Awards: Super-high resolution optical nanoscopy based on microlenses, CAREER: Programmable active lithography using nanotube arrays, MRI-R2: Acquisition of an Analytical High Resolution Scanning Electron Microscope, REU Site in Interdisciplinary Materials Research