Winkler, Gates R. and Winkler, Jay R. (2011) A light emitting diode based photoelectrochemical screener for distributed combinatorial materials discovery. Review of Scientific Instruments, 82 (11). Art. No. 114101. ISSN 0034-6748 http://resolver.caltech.edu/CaltechAUTHORS:20120113-131251359
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Combinatorial approaches for targeted discovery of new materials require rapid screening systems to evaluate large numbers of new material compositions. High-throughput combinatorial materials discovery is a capital-intensive undertaking requiring sophisticated robotic sample preparation and rapid screening assays. A distributed approach to combinatorial materials discovery can achieve similar goals by increasing the breadth of participation and reducing the size of the capital investment. The discovery of new photoactive materials for solar fuels production demands a screening device to probe materials for electrochemical current production upon irradiation with visible light. We have developed a system that uses an array of pulsed light-emitting diodes (LEDs) synchronized with a two-electrode potentiostat that can measure the photoelectrochemical responses of combinatorial sample arrays deposited on conducting glass plates. Compared to raster scanning methods, this LED system trades spatial resolution for a substantial reduction in scan time.
|Additional Information:||© 2011 American Institute of Physics. Received 20 July 2011; accepted 6 October 2011; published online 2 November 2011. We thank Claire Drolen for preparation of the iron oxide test plate. This research was supported by the Caltech Center for Sustainable Energy Research (Gordon and Betty Moore Foundation) and the National Science Foundation Center for Chemical Innovation in Solar Fuels (CHE 0802907).|
|Subject Keywords:||light emitting diodes, radiation effects, solar cell arrays|
|Classification Code:||PACS: 88.40H-; 85.60.Jb|
|Official Citation:||A light emitting diode based photoelectrochemical screener for distributed combinatorial materials discovery Gates R. Winkler and Jay R. Winkler Rev. Sci. Instrum. 82, 114101 (2011); doi:10.1063/1.3657155 (5 pages)|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||13 Jan 2012 21:35|
|Last Modified:||26 Dec 2012 14:41|
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