The authors investigate the influence of two hole interfacial materials poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS) and aqueous solution-processed MoO3 (sMoO3) on cell stability. sMoO3-based device demonstrated obviously improved stability compared to PEDOT:PSS-based one. Current-voltage characteristics analysis is carried out to investigate the effect of the hole interfacial layers on the cell stability. The formation of additional trap states at the interfaces between the hole interfacial layer and the active layer in degraded devices is verified by a differential method. Improved cell stability is attributed to a relatively stable sMoO3 interfacial layer compared to PEDOT:PSS by comparing their different trap states distributions.
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15 September 2014
Research Article|
September 15 2014
Interfacial degradation effects of aqueous solution-processed molybdenum trioxides on the stability of organic solar cells evaluated by a differential method
Yan-Hui Lou;
Yan-Hui Lou
1Institute of Functional Nano & Soft Materials (FUNSOM),
Soochow University
, Suzhou, Jiangsu 215123, China
2Graduate School of Science and Technology,
University of Toyama
, 3190 Gofuku Toyama, Japan
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Zhao-Kui Wang;
Zhao-Kui Wang
a)
1Institute of Functional Nano & Soft Materials (FUNSOM),
Soochow University
, Suzhou, Jiangsu 215123, China
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Da-Xing Yuan;
Da-Xing Yuan
1Institute of Functional Nano & Soft Materials (FUNSOM),
Soochow University
, Suzhou, Jiangsu 215123, China
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Hiroyuki Okada;
Hiroyuki Okada
2Graduate School of Science and Technology,
University of Toyama
, 3190 Gofuku Toyama, Japan
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Liang-Sheng Liao
Liang-Sheng Liao
a)
1Institute of Functional Nano & Soft Materials (FUNSOM),
Soochow University
, Suzhou, Jiangsu 215123, China
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a)
Electronic addresses: [email protected] and [email protected]
Appl. Phys. Lett. 105, 113301 (2014)
Article history
Received:
July 17 2014
Accepted:
September 03 2014
Citation
Yan-Hui Lou, Zhao-Kui Wang, Da-Xing Yuan, Hiroyuki Okada, Liang-Sheng Liao; Interfacial degradation effects of aqueous solution-processed molybdenum trioxides on the stability of organic solar cells evaluated by a differential method. Appl. Phys. Lett. 15 September 2014; 105 (11): 113301. https://doi.org/10.1063/1.4895805
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