Influence of single-walled carbon nanotubes induced exciton dissociation improvement on hybrid organic photovoltaic devices

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Influence of single-walled carbon nanotubes induced exciton dissociation improvement on hybrid organic photovoltaic devices. / Aïssa, B.; Ali, A.; Bentouaf, A.; Khan, W.; Zakaria, Y.; Mahmoud, K. A.; Ali, K.; Malik Muhammad, N.; Mansour, S. A.

In: Journal of Applied Physics, Vol. 126, No. 11, 113101, 2019.

Research output: Contribution to journalArticle

Harvard

Aïssa, B, Ali, A, Bentouaf, A, Khan, W, Zakaria, Y, Mahmoud, KA, Ali, K, Malik Muhammad, N & Mansour, SA 2019, 'Influence of single-walled carbon nanotubes induced exciton dissociation improvement on hybrid organic photovoltaic devices', Journal of Applied Physics, vol. 126, no. 11, 113101. https://doi.org/10.1063/1.5105388

APA

Aïssa, B., Ali, A., Bentouaf, A., Khan, W., Zakaria, Y., Mahmoud, K. A., Ali, K., Malik Muhammad, N., & Mansour, S. A. (2019). Influence of single-walled carbon nanotubes induced exciton dissociation improvement on hybrid organic photovoltaic devices. Journal of Applied Physics, 126(11), [113101]. https://doi.org/10.1063/1.5105388

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Author

Aïssa, B. ; Ali, A. ; Bentouaf, A. ; Khan, W. ; Zakaria, Y. ; Mahmoud, K. A. ; Ali, K. ; Malik Muhammad, N. ; Mansour, S. A. / Influence of single-walled carbon nanotubes induced exciton dissociation improvement on hybrid organic photovoltaic devices. In: Journal of Applied Physics. 2019 ; Vol. 126, No. 11.

RIS

TY - JOUR

T1 - Influence of single-walled carbon nanotubes induced exciton dissociation improvement on hybrid organic photovoltaic devices

AU - Aïssa, B.

AU - Ali, A.

AU - Bentouaf, A.

AU - Khan, W.

AU - Zakaria, Y.

AU - Mahmoud, K. A.

AU - Ali, K.

AU - Malik Muhammad, N.

AU - Mansour, S. A.

PY - 2019

Y1 - 2019

N2 - Torch-plasma-grown single-walled carbon nanotubes (SWCNTs) are integrated with regioregular poly(3-hexylthiophene) (P3HT) and a fullerene derivative 1-(3-methoxycarbonyl) propyl-1-phenyl[6,6]C61 (PCBM) as a hybrid photoactive layer for bulk heterojunction solar cell devices. We demonstrate that molecular information could be accurately obtained by time-of-flight secondary ion mass spectrometry throughout the hybrid organic photoactive solar cell layers when sputtering is performed using a Cs+ 2000 eV ion source. Furthermore, the photovoltaic (PV) performance of the fabricated devices show an increase in the short-circuit current density (Jsc) and the fill factor (FF) as compared to the pristine devices fabricated without SWCNTs. The best results are obtained with 0.5 wt. % SWCNT loads, where an open-circuit voltage (VOC) of 660 mV is achieved, with a Jsc of 9.95 mA cm-2 and a FF of 54%, leading to a power conversion efficiency of 3.54% (measured at standard test conditions, AM1.5 g). At this optimum SWCNT concentration of 0.5 wt. %, and to further understand the charge-transfer mechanisms taking place at the interfaces of P3HT:PCBM:SWCNT, Jsc is measured with respect to the light intensity and shows a linear dependency (in the double logarithmic scale), which implies that losses in the charge carrier are rather governed by monomolecular recombination. Finally, our results show that our hybrid devices benefit from the fullerene electron accepting nature and from the SWCNT fast electron transportation feature that improve substantially the exciton dissociation efficiency. The influence of the SWCNTs on the Fermi level and the work function of the photoactive composite and its impact on the PV performance is also investigated.

AB - Torch-plasma-grown single-walled carbon nanotubes (SWCNTs) are integrated with regioregular poly(3-hexylthiophene) (P3HT) and a fullerene derivative 1-(3-methoxycarbonyl) propyl-1-phenyl[6,6]C61 (PCBM) as a hybrid photoactive layer for bulk heterojunction solar cell devices. We demonstrate that molecular information could be accurately obtained by time-of-flight secondary ion mass spectrometry throughout the hybrid organic photoactive solar cell layers when sputtering is performed using a Cs+ 2000 eV ion source. Furthermore, the photovoltaic (PV) performance of the fabricated devices show an increase in the short-circuit current density (Jsc) and the fill factor (FF) as compared to the pristine devices fabricated without SWCNTs. The best results are obtained with 0.5 wt. % SWCNT loads, where an open-circuit voltage (VOC) of 660 mV is achieved, with a Jsc of 9.95 mA cm-2 and a FF of 54%, leading to a power conversion efficiency of 3.54% (measured at standard test conditions, AM1.5 g). At this optimum SWCNT concentration of 0.5 wt. %, and to further understand the charge-transfer mechanisms taking place at the interfaces of P3HT:PCBM:SWCNT, Jsc is measured with respect to the light intensity and shows a linear dependency (in the double logarithmic scale), which implies that losses in the charge carrier are rather governed by monomolecular recombination. Finally, our results show that our hybrid devices benefit from the fullerene electron accepting nature and from the SWCNT fast electron transportation feature that improve substantially the exciton dissociation efficiency. The influence of the SWCNTs on the Fermi level and the work function of the photoactive composite and its impact on the PV performance is also investigated.

U2 - 10.1063/1.5105388

DO - 10.1063/1.5105388

M3 - Article

AN - SCOPUS:85072376819

VL - 126

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 11

M1 - 113101

ER -