Ultra-low p-doping of poly(3-hexylthiophene) and its impact on polymer aggregation and photovoltaic performance

Marcel M. Said; Yadong Zhang; Raghunath R. Dasari; Dalaver H. Anjum; Rahim Munir; Hanlin Hu; Aram Amassian; Stephen Barlow; Seth R. Marder

doi:10.1515/oph-2016-0001

Ultra-low p-doping of poly(3-hexylthiophene) and its impact on polymer aggregation and photovoltaic performance

Marcel M. Said, Yadong Zhang, Raghunath R. Dasari, Dalaver H. Anjum, Rahim Munir, Hanlin Hu, Aram Amassian, Stephen Barlow, Seth R. Marder

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

Abstract

Poly(3-hexylthiophene) (P3HT) films and P3HT / fullerene photovoltaic cells have been p-doped with very low levels (< 1 wt. %) of molybdenum tris[1-(trifluoromethylcarbonyl)- 2-(trifluoromethyl)-ethane-1,2-dithiolene]. The dopants are inhomogenously distributed within doped P3HT films, both laterally and as a function of depth, and appear to aggregate in some instances. Doping also results in subtle changes in the local and long range order of the P3HT film. These effects likely contribute to the complexity of the observed evolutions in conductivity, mobility and work function with doping levels. They also negatively affect the open-circuit voltage and fill factor of solar cells in unexpected ways, indicating that dopant aggregation and non-uniform distribution can harm device performance.

Original language	English (US)
Journal	Organic Photonics and Photovoltaics
Volume	4
Issue number	1
DOIs	https://doi.org/10.1515/oph-2016-0001
State	Published - Apr 25 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by the Office of Naval Research (N00014- 14-1-0126) and the Air
Force Office of Scientific Research (BIONIC Program,
FA9550-09-1-0162). The author would like to thank Guy
Olivier Ngongang and Kui Zhao for their generous assistance and input regarding photovoltaic and transistor
measurements, and absorbance data modelling.

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10.1515/oph-2016-0001

https://repository.kaust.edu.sa/bitstream/10754/619763/1/%5bOrganic%20Photonics%20and%20Photovoltaics%5d%20Ultra-low%20p-doping%20of%20poly%283-hexylthiophene%29%20and_its%20impact%20on%20polymer%20aggregation%20and_photovoltaic%20performance.pdf

Cite this

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title = "Ultra-low p-doping of poly(3-hexylthiophene) and its impact on polymer aggregation and photovoltaic performance",

abstract = "Poly(3-hexylthiophene) (P3HT) films and P3HT / fullerene photovoltaic cells have been p-doped with very low levels (< 1 wt. %) of molybdenum tris[1-(trifluoromethylcarbonyl)- 2-(trifluoromethyl)-ethane-1,2-dithiolene]. The dopants are inhomogenously distributed within doped P3HT films, both laterally and as a function of depth, and appear to aggregate in some instances. Doping also results in subtle changes in the local and long range order of the P3HT film. These effects likely contribute to the complexity of the observed evolutions in conductivity, mobility and work function with doping levels. They also negatively affect the open-circuit voltage and fill factor of solar cells in unexpected ways, indicating that dopant aggregation and non-uniform distribution can harm device performance.",

author = "Said, {Marcel M.} and Yadong Zhang and Dasari, {Raghunath R.} and Anjum, {Dalaver H.} and Rahim Munir and Hanlin Hu and Aram Amassian and Stephen Barlow and Marder, {Seth R.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by the Office of Naval Research (N00014- 14-1-0126) and the Air Force Office of Scientific Research (BIONIC Program, FA9550-09-1-0162). The author would like to thank Guy Olivier Ngongang and Kui Zhao for their generous assistance and input regarding photovoltaic and transistor measurements, and absorbance data modelling.",

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doi = "10.1515/oph-2016-0001",

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T1 - Ultra-low p-doping of poly(3-hexylthiophene) and its impact on polymer aggregation and photovoltaic performance

AU - Said, Marcel M.

AU - Zhang, Yadong

AU - Dasari, Raghunath R.

AU - Anjum, Dalaver H.

AU - Munir, Rahim

AU - Hu, Hanlin

AU - Amassian, Aram

AU - Barlow, Stephen

AU - Marder, Seth R.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by the Office of Naval Research (N00014- 14-1-0126) and the Air Force Office of Scientific Research (BIONIC Program, FA9550-09-1-0162). The author would like to thank Guy Olivier Ngongang and Kui Zhao for their generous assistance and input regarding photovoltaic and transistor measurements, and absorbance data modelling.

PY - 2016/4/25

Y1 - 2016/4/25

N2 - Poly(3-hexylthiophene) (P3HT) films and P3HT / fullerene photovoltaic cells have been p-doped with very low levels (< 1 wt. %) of molybdenum tris[1-(trifluoromethylcarbonyl)- 2-(trifluoromethyl)-ethane-1,2-dithiolene]. The dopants are inhomogenously distributed within doped P3HT films, both laterally and as a function of depth, and appear to aggregate in some instances. Doping also results in subtle changes in the local and long range order of the P3HT film. These effects likely contribute to the complexity of the observed evolutions in conductivity, mobility and work function with doping levels. They also negatively affect the open-circuit voltage and fill factor of solar cells in unexpected ways, indicating that dopant aggregation and non-uniform distribution can harm device performance.

AB - Poly(3-hexylthiophene) (P3HT) films and P3HT / fullerene photovoltaic cells have been p-doped with very low levels (< 1 wt. %) of molybdenum tris[1-(trifluoromethylcarbonyl)- 2-(trifluoromethyl)-ethane-1,2-dithiolene]. The dopants are inhomogenously distributed within doped P3HT films, both laterally and as a function of depth, and appear to aggregate in some instances. Doping also results in subtle changes in the local and long range order of the P3HT film. These effects likely contribute to the complexity of the observed evolutions in conductivity, mobility and work function with doping levels. They also negatively affect the open-circuit voltage and fill factor of solar cells in unexpected ways, indicating that dopant aggregation and non-uniform distribution can harm device performance.

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ER -

Ultra-low p-doping of poly(3-hexylthiophene) and its impact on polymer aggregation and photovoltaic performance

Abstract

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