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Light-induced elect...
Light-induced electrolyte improvement in cobalt tris(bipyridine)-mediated dye-sensitized solar cells
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- Gao, Jiajia (author)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Yang, Wenxing (author)
- Uppsala universitet,Fysikalisk kemi
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- El-Zohry, A. M. (author)
- Uppsala universitet,Institutionen för kemi - Ångström
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- Prajapati, Govind Kumar (author)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Fang, Yuan (author)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Dai, Jing (author)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Hao, Yan (author)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Leandri, Valentina (author)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Svensson, Per H (author)
- KTH,RISE,Yta, process och formulering,KTH Royal Institute of Technology, Sweden,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden;RISE Surface Proc Formulat, Forskargatan 20j, SE-15136 Sodertalje, Sweden
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- Furo, Istvan (author)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Boschloo, Gerrit (author)
- Uppsala universitet,Fysikalisk kemi
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- Lund, T. (author)
- Roskilde University, Denmark,Roskilde Univ, Dept Sci & Environm, DK-4000 Roskilde, Denmark.
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- Kloo, Lars (author)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden
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(creator_code:org_t)
- 2019
- 2019
- English.
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In: Journal of Materials Chemistry A. - : Royal Society of Chemistry. - 2050-7488 .- 2050-7496. ; 7:33, s. 19495-19505
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Abstract
Subject headings
Close
- Lithium-ion-free tris(2,2′-bipyridine) Co(ii/iii)-mediated electrolytes have previously been proposed for long-term stable dye-sensitized solar cells (DSSCs). Such redox systems also offer an impressive DSSC performance improvement under light soaking exposure, manifested by an increase in photocurrent and fill factor without the expense of decreasing photovoltage. Kinetic studies show that charge transfer and ion diffusion at the electrode/electrolyte interface are improved due to the light exposure. Control experiments reveal that the light effect is unambiguously associated with electrolyte components, [Co(bpy)3]3+ and the Lewis-base additive tert-butylpyridine (TBP). Electrochemical and spectroscopic investigation of the [Co(bpy)3]3+/TBP mixtures points out that the presence of TBP, which retards the electrolyte diffusion, however causes an irreversible redox reaction of [Co(bpy)3]3+ upon light exposure that improves the overall conductivity. This discovery not only provides a new strategy to mitigate the typical Jsc-Voc trade-off in Co(ii/iii)-mediated DSSCs but also highlights the importance of investigating the photochemistry of a photoelectrochemical system.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Keyword
- Charge transfer
- Cobalt
- Economic and social effects
- Electrolytes
- Redox reactions
- Control experiments
- Electrode/electrolyte interfaces
- Light effects
- Light exposure
- Photo-voltage
- Photoelectrochemical system
- Redox systems
- Spectroscopic investigations
- Dye-sensitized solar cells
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
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Gao, Jiajia
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Yang, Wenxing
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El-Zohry, A. M.
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Prajapati, Govin ...
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Fang, Yuan
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Dai, Jing
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Hao, Yan
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Leandri, Valenti ...
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Svensson, Per H
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Furo, Istvan
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Boschloo, Gerrit
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Lund, T.
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Kloo, Lars
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Other Chemistry ...
- Articles in the publication
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Journal of Mater ...
- By the university
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RISE
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Royal Institute of Technology
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Uppsala University