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Semiconductor Septum ELectrochemical Photovoltaic Cell

Published online by Cambridge University Press:  10 February 2011

H.Ti Tien ,
Pengcheng Ren ,
Wenxiu Luo ,
Zhongke Tan  and
Angelica L. Ottova
H.Ti Tien
Affiliation:
Membrane Biophysics Lab (Giltner Hall), Physiology Department, Michigan State University East Lansing, MI 48824, USA
Pengcheng Ren
Affiliation:
Qingdao Institute of Chemical Technology, Qingdao 266042, PRC
Wenxiu Luo
Affiliation:
Qingdao Institute of Chemical Technology, Qingdao 266042, PRC
Zhongke Tan
Affiliation:
Qingdao Institute of Chemical Technology, Qingdao 266042, PRC
Angelica L. Ottova
Affiliation:
Permanent address: Center for Interface Sciences, Microelectronics Department, Slovak Technical University, Bratislava, Slovak Republic
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Abstract

We report the use of semiconductor septum electrochemical photovoltaic (SC-SEP) cell, modeled after green plant photosynthesis, in an application of solar energy conversion. A SC-SEP cell consists of a thin film of CdSe deposited on a metallic substrate (Ti, Ni, or stainless steel) as a bipolar septum electrode separating two aqueous solutions. It has been established that, upon irradiation of the septum electrode with visible light of the solar spectrum, photogenerated electron-hole pairs are separated under the influence of electric field. On the side of the septum electrode facing the light, the most powerful oxidant (holes) will oxidize species in the bathing solution, while the most powerful reducing agent (electrons) present on the dark side will carry out reduction of heavy metal ions or evolve hydrogen from aqueous solutions including seawater. Specifically, we report the use of photon energy generated electrons and ‘holes’ for the cleavage water to hydrogen and/or valuable chemicals in SC-SEP cells.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 426: Symposium J – Thin Films for Photovoltaic and Related Device , 1996 , 545
Copyright
Copyright © Materials Research Society 1996

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