Photovoltaic Effect of CdS Quantum Dots Synthesized in Inverse Micelles and R-Phycoerythrin Tunnel Cavities

CdS quantum dots (CdS QDs) 4.3 nm in diameter synthesized in an AOT/isooctane/water microemulsion and in R-phycoerythrin tunnel cavities (3.5 × 6.0 nm) were analyzed for photoelectrochemical properties. The CdS QDs preparations were applied onto a platinum electrode to obtain solid films. Experiment...

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Bibliographic Details
Published in:Applied biochemistry and biotechnology 2015-06, Vol.176 (4), p.1141-1150
Main Authors: Bekasova, Olga D, Revina, Alexandra A, Kornienko, Ekaterina S, Kurganov, Boris I
Format: Article
Language:English
Subjects:
agar
Biochemistry
Biotechnology
Cadmium Compounds - chemistry
Chemistry
Chemistry and Materials Science
Electrochemical Techniques
Electrodes
Ethanol
Ethanol - chemistry
iso-octanes
Light
lighting
Micelles
Octanes - chemistry
Particle Size
Photosensitizing Agents - chemical synthesis
Photosensitizing Agents - chemistry
Photosynthesis
Photovoltaic cells
Photovoltaics
Phycoerythrin - chemistry
platinum
potassium chloride
Potassium Chloride - chemistry
Quantum dots
Quantum Dots - chemistry
Selenium Compounds - chemistry
Succinates - chemistry
Water - chemistry
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Summary:CdS quantum dots (CdS QDs) 4.3 nm in diameter synthesized in an AOT/isooctane/water microemulsion and in R-phycoerythrin tunnel cavities (3.5 × 6.0 nm) were analyzed for photoelectrochemical properties. The CdS QDs preparations were applied onto a platinum electrode to obtain solid films. Experiments were performed in a two-section vessel, with one section filled with ethanol and the other, with 3 M KCl. The sections were connected through an agar stopper. It was found that illumination of the films resulted in a change of the electrode potential. The magnitude of this change and the kinetics of the appearance and disappearance of the photopotential, i.e., the difference between the electrode potential on the light and in dark, depended on the nature of the QD shell. The photovoltaic effect of CdS QDs in R-phycoerythrin, compared to that of CdS QDs in AOT/isooctane micelles, is three to four times greater due to the photosensitizing action of R-phycoerythrin. The photosensitized effect was markedly higher than the photoelectric sensitivity of R-phycoerythrin and had the opposite polarity. Changes in the potential upon turning the light on and off could be observed repeatedly.
ISSN:0273-2289
1559-0291
DOI:10.1007/s12010-015-1635-x