We present power-conversion-efficiency enhanced dye-sensitized solar cells by sodium adsorption with aluminum silicate coated TiO2 photoelectrodes. Aluminum silicate in TiO2 nanoparticles acts as an Na trap in the NaCl solution, where the trapped sodium might diffuse into the TiO2 nanoparticles, enhancing electrical conductivity. Aluminum silicate films were fabricated by room-temperature atomic layer deposition (ALD) with ALD cycles ranging from 1 to 20. One ALD cycle corresponds to a deposition thickness from 0.10 to 0.11 nm. N719 dye and iodine electrolyte are used in the present study. In the power conversion test, the power conversion efficiency (PCE) is recorded to be 7.42% with Na adsorption and the aluminum silicate film under an AM 1.5G simulated light exposure with an intensity of 100 mW/cm2. This represents an improvement from the PCE of 5.99% observed at the standard sample without either Na adsorption or the aluminum silicate film. Na adsorption by aluminum silicate enhances both short-circuit-current density and open-circuit voltage. Improvement in power conversion is attributed to enhancing the carrier conduction due to Na atoms diffusing into TiO2 photoanodes.
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Research Article|
April 14 2025
Power generation enhanced dye-sensitized solar cells by sodium adsorption with aluminum silicate coated TiO2 photoelectrodes
Special Collection:
Atomic Layer Deposition (ALD)
Sho Kamiyama
;
Sho Kamiyama
(Data curation, Writing – review & editing)
Graduate School of Science and Engineering, Yamagata University
, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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Hibiki Takeda
;
Hibiki Takeda
(Data curation, Writing – review & editing)
Graduate School of Science and Engineering, Yamagata University
, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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Ryo Miyazawa
;
Ryo Miyazawa
(Data curation, Writing – review & editing)
Graduate School of Science and Engineering, Yamagata University
, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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Masanori Miura
;
Masanori Miura
(Data curation, Writing – review & editing)
Graduate School of Science and Engineering, Yamagata University
, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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Bashir Ahmmad
;
Bashir Ahmmad
(Writing – review & editing)
Graduate School of Science and Engineering, Yamagata University
, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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Fumihiko Hirose
Fumihiko Hirose
a)
(Conceptualization, Project administration, Supervision, Writing – original draft)
Graduate School of Science and Engineering, Yamagata University
, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
a)Author to whom correspondence should be addressed: [email protected]
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Sho Kamiyama
Hibiki Takeda
Ryo Miyazawa
Masanori Miura
Bashir Ahmmad
Fumihiko Hirose
a)
Graduate School of Science and Engineering, Yamagata University
, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
a)Author to whom correspondence should be addressed: [email protected]
J. Vac. Sci. Technol. A 43, 032407 (2025)
Article history
Received:
November 28 2024
Accepted:
March 25 2025
Citation
Sho Kamiyama, Hibiki Takeda, Ryo Miyazawa, Masanori Miura, Bashir Ahmmad, Fumihiko Hirose; Power generation enhanced dye-sensitized solar cells by sodium adsorption with aluminum silicate coated TiO2 photoelectrodes. J. Vac. Sci. Technol. A 1 May 2025; 43 (3): 032407. https://doi.org/10.1116/6.0004246
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