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Interplay of light transmission and catalytic exchange current in photoelectrochemical systems

Fountaine, Katherine T. and Lewerenz, Hans J. and Atwater, Harry A. (2014) Interplay of light transmission and catalytic exchange current in photoelectrochemical systems. Applied Physics Letters, 105 (17). Art. No. 173901. ISSN 0003-6951. doi:10.1063/1.4900612.

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We develop an analytic current-voltage expression for a variable junction photoelectrochemical (PEC) cell and use it to investigate and illustrate the influence of the optical and electrical properties of catalysts on the optoelectronic performance of PEC devices. Specifically, the model enables a simple, yet accurate accounting of nanostructured catalyst optical and electrical properties through incorporation of an optical transmission factor and active catalytic area factor. We demonstrate the utility of this model via the output power characteristics of an exemplary dual tandem solar cell with indium gallium phosphide and indium gallium arsenide absorbers with varying rhodium catalyst nanoparticle loading. The approach highlights the importance of considering interactions between independently optimized components for optimal PEC device design.

Item Type:Article
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URLURL TypeDescription
Fountaine, Katherine T.0000-0002-0414-8227
Lewerenz, Hans J.0000-0001-8433-9471
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2014 AIP Publishing LLC. Received 19 August 2014; accepted 15 October 2014; published online 27 October 2014. The authors are grateful to Matthias May, Thomas Hannappel, Frank Dimroth, and David Lackner for their contributions in the development of the tandem-electrocatalyst system that stimulated this research. This material is based upon work performed by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, supported through the Office of Science of the U.S. Department of Energy under Award No. DE-SC0004993. K.T.F. was supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-1144469.
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0004993
NSF Graduate Research FellowshipDGE-1144469
Issue or Number:17
Record Number:CaltechAUTHORS:20141103-094055916
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Official Citation:Interplay of light transmission and catalytic exchange current in photoelectrochemical systems Katherine T. Fountaine, Hans J. Lewerenz and Harry A. Atwater Appl. Phys. Lett. 105, 173901 (2014);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51160
Deposited By: Ruth Sustaita
Deposited On:03 Nov 2014 20:33
Last Modified:10 Nov 2021 19:06

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