Next Article in Journal
Electrostatic Discharge Current Linear Approach and Circuit Design Method
Previous Article in Journal
Performance Analysis of a Double-effect Adsorption Refrigeration Cycle with a Silica Gel/Water Working Pair
Energies 2010, 3(11), 1721-1727; doi:10.3390/en3111721
Article

A Photovoltaic Device Using an Electrolyte Containing Photosynthetic Reaction Centers

1,* , 2
,
2,3
,
2,3
 and
3
1 Department of Electrical Engineering, University of South Florida (USF), Tampa, FL 33620, USA 2 Department of Electrical and Computer Engineering and Advanced Materials & Process Engineering Lab, University of British Columbia (UBC), Vancouver BC V6T 1Z1, Canada 3 Department of Microbiology and Immunology, University of British Columbia (UBC), Vancouver BC V6T 1Z1, Canada
* Author to whom correspondence should be addressed.
Received: 27 September 2010 / Revised: 20 October 2010 / Accepted: 26 October 2010 / Published: 28 October 2010
(This article belongs to the Special Issue Compounds for Photo-Harvesting Applications)
Download PDF [281 KB, uploaded 17 March 2015]

Abstract

The performance of bio-photovoltaic devices with a monolayer of the immobilized photosynthetic reaction center (RC) is generally low because of weak light absorption and poor charge transfer between the RC and the electrode. In this paper, a new bio-photovoltaic device is described in which the RC is dissolved in the electrolyte of an electrochemical cell. The charges generated by the illuminated RC are transferred to electrodes via mediators. The difference between the reaction rates of two types of mediator at the electrode surfaces determines the direction of the photocurrent in the device. Experimental results show that the magnitude of the photocurrent is proportional to the incident light intensity, and the current increases nonlinearly with an increase in the RC concentration in the electrolyte. With further optimization this approach should lead to devices with improved light absorption.
Keywords: reaction center; Rhodobacter sphaeroides; mediators; photocurrent; bio-photovoltaic (bio-PV) reaction center; Rhodobacter sphaeroides; mediators; photocurrent; bio-photovoltaic (bio-PV)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote
MDPI and ACS Style

Takshi, A.; Madden, J.D.; Mahmoudzadeh, A.; Saer, R.; Beatty, J.T. A Photovoltaic Device Using an Electrolyte Containing Photosynthetic Reaction Centers. Energies 2010, 3, 1721-1727.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here

Comments

Cited By

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert