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Title: n-type molybdenum-diselenide-based liquid-junction solar cells: A nonaqueous electrolyte system employing the chlorine/chloride couple

Abstract

Single-crystal, n-type MoSe/sub 2/ (E/sub g/=1.4 eV) is shown to serve as a stable photoanode in an electrochemical cell employing a nonaqueous (CH/sub 3/CN) solution of Cl/sub 2//Cl/sup -/ as the redox active material. At 90 mW/cm/sup 2/ input, 632.8-nm light can be converted to electricity with an efficiency of 5.9--7.5%. The photoanode reaction is 2Cl/sup -/..-->..Cl/sub 2/ and the cathode reaction is Cl/sub 2/..-->..2Cl/sup -/. The MoSe/sub 2/ is qualitatively better than MoS/sub 2/ (approx.0.5% efficiency) which has a larger band gap (1.7 eV), but both materials are rugged in the nonaqueous solution, while both photocorrode in aqueous Cl/sup -/ solutions. In H/sub 2/O, the I/sub 3//sup -//I/sup -/ couple is excellent but in CH/sub 3/CN it yields lower efficiency than the Cl/sub 2//Cl/sup -/ couple. The stable Cl/sub 2//Cl/sup -/ system provides evidence that a transparent, reversible, non-O/sub 2/-sensitive redox couple can be useful in n-type semiconductor-based liquid-junction cells employing a direct band gap material having optimum solar response.

Authors:
; ; ;
Publication Date:
Research Org.:
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
OSTI Identifier:
5509318
Resource Type:
Journal Article
Journal Name:
Appl. Phys. Lett.; (United States)
Additional Journal Information:
Journal Volume: 36:8
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; PHOTOELECTROCHEMICAL CELLS; CATHODES; EFFICIENCY; ANODES; CHLORIDES; CHLORINE; CYANIDES; ELECTROLYTES; ENERGY CONVERSION; JUNCTIONS; LIQUIDS; METHYL RADICALS; MOLYBDENUM SELENIDES; MOLYBDENUM SULFIDES; MONOCRYSTALS; N-TYPE CONDUCTORS; OPTIMIZATION; ALKYL RADICALS; CHALCOGENIDES; CHLORINE COMPOUNDS; CONVERSION; CRYSTALS; ELECTROCHEMICAL CELLS; ELECTRODES; ELEMENTS; EQUIPMENT; FLUIDS; HALIDES; HALOGEN COMPOUNDS; HALOGENS; MATERIALS; MOLYBDENUM COMPOUNDS; NONMETALS; RADICALS; SELENIDES; SELENIUM COMPOUNDS; SEMICONDUCTOR MATERIALS; SOLAR EQUIPMENT; SULFIDES; SULFUR COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 140505* - Solar Energy Conversion- Photochemical, Photobiological, & Thermochemical Conversion- (1980-)

Citation Formats

Schneemeyer, L F, Wrighton, M S, Stacy, A, and Sienko, M J. n-type molybdenum-diselenide-based liquid-junction solar cells: A nonaqueous electrolyte system employing the chlorine/chloride couple. United States: N. p., 1980. Web. doi:10.1063/1.91598.
Schneemeyer, L F, Wrighton, M S, Stacy, A, & Sienko, M J. n-type molybdenum-diselenide-based liquid-junction solar cells: A nonaqueous electrolyte system employing the chlorine/chloride couple. United States. https://doi.org/10.1063/1.91598
Schneemeyer, L F, Wrighton, M S, Stacy, A, and Sienko, M J. Tue . "n-type molybdenum-diselenide-based liquid-junction solar cells: A nonaqueous electrolyte system employing the chlorine/chloride couple". United States. https://doi.org/10.1063/1.91598.
@article{osti_5509318,
title = {n-type molybdenum-diselenide-based liquid-junction solar cells: A nonaqueous electrolyte system employing the chlorine/chloride couple},
author = {Schneemeyer, L F and Wrighton, M S and Stacy, A and Sienko, M J},
abstractNote = {Single-crystal, n-type MoSe/sub 2/ (E/sub g/=1.4 eV) is shown to serve as a stable photoanode in an electrochemical cell employing a nonaqueous (CH/sub 3/CN) solution of Cl/sub 2//Cl/sup -/ as the redox active material. At 90 mW/cm/sup 2/ input, 632.8-nm light can be converted to electricity with an efficiency of 5.9--7.5%. The photoanode reaction is 2Cl/sup -/..-->..Cl/sub 2/ and the cathode reaction is Cl/sub 2/..-->..2Cl/sup -/. The MoSe/sub 2/ is qualitatively better than MoS/sub 2/ (approx.0.5% efficiency) which has a larger band gap (1.7 eV), but both materials are rugged in the nonaqueous solution, while both photocorrode in aqueous Cl/sup -/ solutions. In H/sub 2/O, the I/sub 3//sup -//I/sup -/ couple is excellent but in CH/sub 3/CN it yields lower efficiency than the Cl/sub 2//Cl/sup -/ couple. The stable Cl/sub 2//Cl/sup -/ system provides evidence that a transparent, reversible, non-O/sub 2/-sensitive redox couple can be useful in n-type semiconductor-based liquid-junction cells employing a direct band gap material having optimum solar response.},
doi = {10.1063/1.91598},
url = {https://www.osti.gov/biblio/5509318}, journal = {Appl. Phys. Lett.; (United States)},
number = ,
volume = 36:8,
place = {United States},
year = {1980},
month = {4}
}