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

Lynn F. Schneemeyer; Mark S. Wrighton; Angelica Stacy; Michell J. Sienko

doi:10.1063/1.91598

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

Lynn F. Schneemeyer, Mark S. Wrighton, Angelica Stacy, Michell J. Sienko

Chemistry and Biochemistry

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

Single-crystal, n-type MoSe₂ (E_g=1.4 eV) is shown to serve as a stable photoanode in an electrochemical cell employing a nonaqueous (CH₃CN) solution of Cl₂/Cl^- as the redox active material. At 90 mW/cm² input, 632.8-nm light can be converted to electricity with an efficiency of 5.9-7.5%. The photoanode reaction is 2Cl ^-→Cl₂ and the cathode reaction is Cl ₂→2Cl^-. The MoSe₂ is qualitatively better than MoS₂ (∼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^- solutions. In H₂O, the I ₃^-/I^- couple is excellent but in CH ₃CN it yields lower efficiency than the Cl₂/Cl^- couple. The stable Cl₂/Cl^- system provides evidence that a transparent, reversible, non-O₂-sensitive redox couple can be useful in n-type semiconductor-based liquid-junction cells employing a direct band gap material having optimum solar response.

Original language	English
Pages (from-to)	701-703
Number of pages	3
Journal	Applied Physics Letters
Volume	36
Issue number	8
DOIs	https://doi.org/10.1063/1.91598
State	Published - 1980

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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 MoSe2 (Eg=1.4 eV) is shown to serve as a stable photoanode in an electrochemical cell employing a nonaqueous (CH3CN) solution of Cl2/Cl- as the redox active material. At 90 mW/cm2 input, 632.8-nm light can be converted to electricity with an efficiency of 5.9-7.5%. The photoanode reaction is 2Cl -→Cl2 and the cathode reaction is Cl 2→2Cl-. The MoSe2 is qualitatively better than MoS2 (∼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- solutions. In H2O, the I 3-/I- couple is excellent but in CH 3CN it yields lower efficiency than the Cl2/Cl- couple. The stable Cl2/Cl- system provides evidence that a transparent, reversible, non-O2-sensitive redox couple can be useful in n-type semiconductor-based liquid-junction cells employing a direct band gap material having optimum solar response.",

author = "Schneemeyer, {Lynn F.} and Wrighton, {Mark S.} and Angelica Stacy and Sienko, {Michell J.}",

year = "1980",

doi = "10.1063/1.91598",

language = "English",

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pages = "701--703",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

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T1 - N-type molybdenum-diselenide-based liquid-junction solar cells

T2 - A nonaqueous electrolyte system employing the chlorine/chloride couple

AU - Schneemeyer, Lynn F.

AU - Wrighton, Mark S.

AU - Stacy, Angelica

AU - Sienko, Michell J.

PY - 1980

Y1 - 1980

N2 - Single-crystal, n-type MoSe2 (Eg=1.4 eV) is shown to serve as a stable photoanode in an electrochemical cell employing a nonaqueous (CH3CN) solution of Cl2/Cl- as the redox active material. At 90 mW/cm2 input, 632.8-nm light can be converted to electricity with an efficiency of 5.9-7.5%. The photoanode reaction is 2Cl -→Cl2 and the cathode reaction is Cl 2→2Cl-. The MoSe2 is qualitatively better than MoS2 (∼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- solutions. In H2O, the I 3-/I- couple is excellent but in CH 3CN it yields lower efficiency than the Cl2/Cl- couple. The stable Cl2/Cl- system provides evidence that a transparent, reversible, non-O2-sensitive redox couple can be useful in n-type semiconductor-based liquid-junction cells employing a direct band gap material having optimum solar response.

AB - Single-crystal, n-type MoSe2 (Eg=1.4 eV) is shown to serve as a stable photoanode in an electrochemical cell employing a nonaqueous (CH3CN) solution of Cl2/Cl- as the redox active material. At 90 mW/cm2 input, 632.8-nm light can be converted to electricity with an efficiency of 5.9-7.5%. The photoanode reaction is 2Cl -→Cl2 and the cathode reaction is Cl 2→2Cl-. The MoSe2 is qualitatively better than MoS2 (∼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- solutions. In H2O, the I 3-/I- couple is excellent but in CH 3CN it yields lower efficiency than the Cl2/Cl- couple. The stable Cl2/Cl- system provides evidence that a transparent, reversible, non-O2-sensitive redox couple can be useful in n-type semiconductor-based liquid-junction cells employing a direct band gap material having optimum solar response.

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

ER -

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

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