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Review of Scientific Instruments / Volume 82 / Issue 11 / ARTICLES / Chemistry

Rev. Sci. Instrum. 82, 114101 (2011); http://dx.doi.org/10.1063/1.3657155 (5 pages)

A light emitting diode based photoelectrochemical screener for distributed combinatorial materials discovery

Gates R. Winkler and Jay R. Winkler

Beckman Institute, California Institute of Technology, 1200 E. California Blvd., MC 139-74, Pasadena, California 91125, USA

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(Received 20 July 2011; accepted 6 October 2011; published online 2 November 2011)

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.

© 2011 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. INSTRUMENT DESIGN
  3. RESULTS
  4. CONCLUDING REMARKS

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KEYWORDS and PACS

Keywords

light emitting diodes, radiation effects, solar cell arrays

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3657155

PUBLICATION DATA

ISSN

0034-6748 (print)  
1089-7623 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    L. Gao, Y. Y. Xue, F. Chen, Q. Xiong, R. L. Meng, D. Ramirez, C. W. Chu, J. H. Eggert, and H. K. Mao, Phys. Rev. B 50, 4260 (1994).

    S. Jayaraman, S. H. Baeck, T. F. Jaramillo, A. Kleiman-Shwarsctein, and E. W. McFarland, Rev. Sci. Instrum. 76, 062227 (2005)RSINAK000076000006062227000001.


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