High-resolution light-activated electrochemistry on amorphous silicon-based photoelectrodes

Author(s)

Gautam, Shreedhar ^{[1, 2]} ; Goncales, Vinicius R. ^{[1, 2]} ; Colombo, Rafael N. P. ^[3] ; Tang, Wenxian ^{[1, 2]} ; Cordoba de Torresi, I, Susana ; Reece, Peter J. ^[4] ; Tilley, Richard D. ^{[1, 2, 5]} ; Justin Gooding, J. ^{[1, 2]}

Affiliation

^[1] Univ New South Wales, Sch Chem, Australian Ctr NanoMed, Sydney, NSW 2052 - Australia

^[2] Univ New South Wales, ARC Ctr Excellence Convergent Bionano Sci & Techn, Sydney, NSW 2052 - Australia

^[3] I, Univ Sao Paulo, Inst Quim, Av Prof Lineu Preste 748, BR-05508080 Sao Paulo, SP - Brazil

^[4] Univ New South Wales, Sch Phys, Sydney, NSW 2052 - Australia

^[5] Univ New South Wales, Mark Wainwright Analyt Ctr, Electron Microscope Unit, Sydney, NSW 2052 - Australia

• Document type: Journal article
• Source: CHEMICAL COMMUNICATIONS; v. 56, n. 54, p. 7435-7438, JUL 11 2020.
• Web of Science Citations: 0

Abstract

Light-activated electrochemistry (LAE) consists of employing a focused light beam to illuminate a semiconducting area and make it electrochemically active. Here, we show how to reduce the electrochemical spatial resolution to submicron by exploiting the short lateral diffusion of charge carriers in amorphous silicon to improve the resolution of LAE by 60 times. (AU)

• FAPESP's process: 17/50264-5 - Design of multi metal nanoarrays for optical sensors
• Grantee: Susana Inés Córdoba de Torresi
• Support Opportunities: Regular Research Grants
• FAPESP's process: 15/12786-4 - Micro and nanostructured surfaces via electrochemistry: from morphology to properties
• Grantee: Rafael Neri Prystaj Colombo
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 15/26308-7 - Optimization of the physicochemical properties of nano -structured materials for applications in molecular recognition, catalysis and energy conversion/storage
• Grantee: Roberto Manuel Torresi
• Support Opportunities: Research Projects - Thematic Grants