Synthesis and photoelectrochemical properties of bismuth thioiodide
https://doi.org/10.29235/1561-8331-2018-54-4-413-418
Abstract
The method of chemical deposition of monocrystalline bismuth thioiodide BiSI needles with a high quantum efficiency of photocurrent generation (up to 55 %) in aqueous solutions of electrolytes has been developed. It was revealed that the introduction of sulfide and iodide anions into the electrolyte solution leads to an increase of the absolute photocurrent values, as well as the presence of sulfide ions causes the significant (about 0.5 V) shift of BiSI bands energy towards more negative electrode potentials. The observed effect is of interest for increasing the photovoltage of solar cells based on BiSI and can find application in heterogeneous sensitized systems for increasing the efficiency of photoelectrons injection from a narrow-band sensitizer into a matrix of a wide-bandgap semiconductor.
About the Authors
M. E. Kazyrevich
Belarusian State University, Minsk
Belarus
Assistant of the Electrochemistry Department
Belarus
Assistant of the Electrochemistry Department
D. Y. Ivashenka
Belarusian State University, Minsk
Belarus
Master Student of the Faculty Chemistry
Belarus
Master Student of the Faculty Chemistry
E. A. Bondarenko
Belarusian State University, Minsk
Belarus
Junior Researcher
Belarus
Junior Researcher
E. A. Streltsov
Belarusian State University, Minsk
Belarus
D. Sc. (Chemistry), Professor, Head of the Electrochemistry Department
Belarus
D. Sc. (Chemistry), Professor, Head of the Electrochemistry Department
A. I. Kulak
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus, Minsk
Belarus
Corresponding Member, D. Sc. (Chemistry), Professor, Head of the Institute
Belarus
Corresponding Member, D. Sc. (Chemistry), Professor, Head of the Institute
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