DOI: 10.1063/1.2008386. Investigation of annealing effects and film thickness dependence of polymer solar cells based on poly(3-hexylthiophene)

Investigation of annealing effects and film thickness dependence of polymer solar cells based on poly(3-hexylthiophene)

10.1063/1.2008386

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

Regioregular poly(3-hexylthiophene) (RR-P3HT) is a promising candidate for polymer photovoltaic research due to its stability and absorption in the red region. In this manuscript, we report polymer photovoltaic devices based on RR-P3HT:methanofullerene [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) 1:1 weight-ratio blend. We studied the effects of annealing temperature and time on the device performance for devices annealed before and after cathode deposition. Thermal annealing shows significant improvement in the performance for both types of annealing conditions, with postproduction annealing being slightly better. For devices with a 43-nm-thick active layer, maximum power conversion efficiency (PCE) of 3.2% and fill factor up to 67% is achieved under Air Mass 1.5, 100-mW∕cm2 illumination. We performed atomic force microscopy and ultraviolet-visible absorption spectroscopy on the P3HT:PCBM films to explain the effect of thermal annealing. By keeping the optimized thermal annealing condition and by varying the active layer thickness, we fabricated devices with PCE up to 4.0%, which is the highest efficiency reported so far for this system.

Bibliography

Li, G., Shrotriya, V., Yao, Y., & Yang, Y. (2005). Investigation of annealing effects and film thickness dependence of polymer solar cells based on poly(3-hexylthiophene). Journal of Applied Physics, 98(4).

Authors 4

Gang Li (first)
Vishal Shrotriya (additional)
Yan Yao (additional)
Yang Yang (additional)

References 19 Referenced 697

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Dates

Type	When
Created	20 years ago (Aug. 18, 2005, 6:02 p.m.)
Deposited	2 years, 2 months ago (June 25, 2023, 12:32 a.m.)
Indexed	1 day, 4 hours ago (Aug. 23, 2025, 9:43 p.m.)
Issued	20 years ago (Aug. 15, 2005)
Published	20 years ago (Aug. 15, 2005)
Published Online	20 years ago (Aug. 19, 2005)
Published Print	20 years ago (Aug. 15, 2005)

Funders 0

None

BibTeX

@article{Li_2005, title={Investigation of annealing effects and film thickness dependence of polymer solar cells based on poly(3-hexylthiophene)}, volume={98}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.2008386}, DOI={10.1063/1.2008386}, number={4}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Li, Gang and Shrotriya, Vishal and Yao, Yan and Yang, Yang}, year={2005}, month=aug }

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