The influence of UV filter and Al/Ag moisture barrier layer on the outdoor stability of polymer solar cells

Chia Ning Weng; Hao Chun Yang; Cheng Yu Tsai; Szu Han Chen; Yan Syun Chen; Chao Hsuan Chen; Kuan Min Huang; Hsin Fei Meng; Yu Chiang Chao; Chih Yu Chang; Hsiao Wen Zan; Sheng Fu Horng; Pei Chen Yu; Kuan Wei Su

doi:10.1016/j.solener.2020.02.041

The influence of UV filter and Al/Ag moisture barrier layer on the outdoor stability of polymer solar cells

Chia Ning Weng, Hao Chun Yang, Cheng Yu Tsai, Szu Han Chen, Yan Syun Chen, Chao Hsuan Chen, Kuan Min Huang, Hsin Fei Meng^*, Yu Chiang Chao, Chih Yu Chang, Hsiao Wen Zan, Sheng Fu Horng, Pei Chen Yu, Kuan Wei Su

^*Corresponding author for this work

Department of Physics

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

12 Citations (Scopus)

Abstract

The degradation of the polymer solar cells in the outdoor condition was studied. It was found that the devices with normal structure (ITO/PEDOT:PSS/PBDTTT-EFT:PC₇₁BM/ZrO_x/Al) show better stability than those with inverted device structure (ITO/ZnO/PBDTTT-EFT:PC₇₁BM/MoO₃/Ag). PBDTTT-EFT is poly[4, 8-bis(5-(2-ethylhexyl) thiophen-2-yl) benzo [1,2-b;4,5-b'] dithiophene-2, 6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno [3,4-b]thiophene-) −2-carboxylate-2-6-diyl)] and PC₇₁BM is [6,6]-phenyl-C71-butyric acid methyl ester. The major cause of degradation was attributed to the ultraviolet (UV) part of the sunlight. When the UV filter with cut-off wavelength of 400 nm was used to protect the device, the decay rate was improved by 50 times and the protected device retains 95% of their initial power conversion efficiency after 13 days outside. In the meanwhile, the decay of device fabricated by toluene was found 8 times faster than device by chlorobenzene. Thin 20 nm of Ag capping layer can further improve the stability. Degradation under water immersion indicates that the major effect of Ag is to protect against the residual moisture inside the encapsulation.

Original language	English
Pages (from-to)	308-316
Number of pages	9
Journal	Solar Energy
Volume	199
DOIs	https://doi.org/10.1016/j.solener.2020.02.041
Publication status	Published - 2020 Mar 15

Keywords

Moisture barrier
Polymer solar cell
Solution-processable
Ultraviolet stability

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solener.2020.02.041

Cite this

Weng, C. N., Yang, H. C., Tsai, C. Y., Chen, S. H., Chen, Y. S., Chen, C. H., Huang, K. M., Meng, H. F., Chao, Y. C., Chang, C. Y., Zan, H. W., Horng, S. F., Yu, P. C., & Su, K. W. (2020). The influence of UV filter and Al/Ag moisture barrier layer on the outdoor stability of polymer solar cells. Solar Energy, 199, 308-316. https://doi.org/10.1016/j.solener.2020.02.041

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title = "The influence of UV filter and Al/Ag moisture barrier layer on the outdoor stability of polymer solar cells",

abstract = "The degradation of the polymer solar cells in the outdoor condition was studied. It was found that the devices with normal structure (ITO/PEDOT:PSS/PBDTTT-EFT:PC71BM/ZrOx/Al) show better stability than those with inverted device structure (ITO/ZnO/PBDTTT-EFT:PC71BM/MoO3/Ag). PBDTTT-EFT is poly[4, 8-bis(5-(2-ethylhexyl) thiophen-2-yl) benzo [1,2-b;4,5-b'] dithiophene-2, 6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno [3,4-b]thiophene-) −2-carboxylate-2-6-diyl)] and PC71BM is [6,6]-phenyl-C71-butyric acid methyl ester. The major cause of degradation was attributed to the ultraviolet (UV) part of the sunlight. When the UV filter with cut-off wavelength of 400 nm was used to protect the device, the decay rate was improved by 50 times and the protected device retains 95% of their initial power conversion efficiency after 13 days outside. In the meanwhile, the decay of device fabricated by toluene was found 8 times faster than device by chlorobenzene. Thin 20 nm of Ag capping layer can further improve the stability. Degradation under water immersion indicates that the major effect of Ag is to protect against the residual moisture inside the encapsulation.",

keywords = "Moisture barrier, Polymer solar cell, Solution-processable, Ultraviolet stability",

author = "Weng, {Chia Ning} and Yang, {Hao Chun} and Tsai, {Cheng Yu} and Chen, {Szu Han} and Chen, {Yan Syun} and Chen, {Chao Hsuan} and Huang, {Kuan Min} and Meng, {Hsin Fei} and Chao, {Yu Chiang} and Chang, {Chih Yu} and Zan, {Hsiao Wen} and Horng, {Sheng Fu} and Yu, {Pei Chen} and Su, {Kuan Wei}",

note = "Publisher Copyright: {\textcopyright} 2020 International Solar Energy Society",

year = "2020",

month = mar,

day = "15",

doi = "10.1016/j.solener.2020.02.041",

language = "English",

volume = "199",

pages = "308--316",

journal = "Solar Energy",

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T1 - The influence of UV filter and Al/Ag moisture barrier layer on the outdoor stability of polymer solar cells

AU - Weng, Chia Ning

AU - Yang, Hao Chun

AU - Tsai, Cheng Yu

AU - Chen, Szu Han

AU - Chen, Yan Syun

AU - Chen, Chao Hsuan

AU - Huang, Kuan Min

AU - Meng, Hsin Fei

AU - Chao, Yu Chiang

AU - Chang, Chih Yu

AU - Zan, Hsiao Wen

AU - Horng, Sheng Fu

AU - Yu, Pei Chen

AU - Su, Kuan Wei

PY - 2020/3/15

Y1 - 2020/3/15

N2 - The degradation of the polymer solar cells in the outdoor condition was studied. It was found that the devices with normal structure (ITO/PEDOT:PSS/PBDTTT-EFT:PC71BM/ZrOx/Al) show better stability than those with inverted device structure (ITO/ZnO/PBDTTT-EFT:PC71BM/MoO3/Ag). PBDTTT-EFT is poly[4, 8-bis(5-(2-ethylhexyl) thiophen-2-yl) benzo [1,2-b;4,5-b'] dithiophene-2, 6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno [3,4-b]thiophene-) −2-carboxylate-2-6-diyl)] and PC71BM is [6,6]-phenyl-C71-butyric acid methyl ester. The major cause of degradation was attributed to the ultraviolet (UV) part of the sunlight. When the UV filter with cut-off wavelength of 400 nm was used to protect the device, the decay rate was improved by 50 times and the protected device retains 95% of their initial power conversion efficiency after 13 days outside. In the meanwhile, the decay of device fabricated by toluene was found 8 times faster than device by chlorobenzene. Thin 20 nm of Ag capping layer can further improve the stability. Degradation under water immersion indicates that the major effect of Ag is to protect against the residual moisture inside the encapsulation.

AB - The degradation of the polymer solar cells in the outdoor condition was studied. It was found that the devices with normal structure (ITO/PEDOT:PSS/PBDTTT-EFT:PC71BM/ZrOx/Al) show better stability than those with inverted device structure (ITO/ZnO/PBDTTT-EFT:PC71BM/MoO3/Ag). PBDTTT-EFT is poly[4, 8-bis(5-(2-ethylhexyl) thiophen-2-yl) benzo [1,2-b;4,5-b'] dithiophene-2, 6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno [3,4-b]thiophene-) −2-carboxylate-2-6-diyl)] and PC71BM is [6,6]-phenyl-C71-butyric acid methyl ester. The major cause of degradation was attributed to the ultraviolet (UV) part of the sunlight. When the UV filter with cut-off wavelength of 400 nm was used to protect the device, the decay rate was improved by 50 times and the protected device retains 95% of their initial power conversion efficiency after 13 days outside. In the meanwhile, the decay of device fabricated by toluene was found 8 times faster than device by chlorobenzene. Thin 20 nm of Ag capping layer can further improve the stability. Degradation under water immersion indicates that the major effect of Ag is to protect against the residual moisture inside the encapsulation.

KW - Moisture barrier

KW - Polymer solar cell

KW - Solution-processable

KW - Ultraviolet stability

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DO - 10.1016/j.solener.2020.02.041

M3 - Article

AN - SCOPUS:85079391362

SN - 0038-092X

VL - 199

SP - 308

EP - 316

JO - Solar Energy

JF - Solar Energy

ER -

The influence of UV filter and Al/Ag moisture barrier layer on the outdoor stability of polymer solar cells

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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