DOI: 10.1002/adfm.200900183. Three‐Dimensional Bulk Heterojunction Morphology for Achieving High Internal Quantum Efficiency in Polymer Solar Cells

Three‐Dimensional Bulk Heterojunction Morphology for Achieving High Internal Quantum Efficiency in Polymer Solar Cells

10.1002/adfm.200900183

Crossref journal-article

Wiley

Advanced Functional Materials (311)

Abstract

AbstractHere, an investigation of three‐dimensional (3D) morphologies for bulk heterojunction (BHJ) films based on regioregular poly(3‐hexylthiophene) (P3HT) and [6,6]‐phenyl‐C61‐butyric acid methyl ester (PCBM) is reported. Based on the results, it is demonstrated that optimized post‐treatment, such as solvent annealing, forces the PCBM molecules to migrate or diffuse toward the top surface of the BHJ composite films, which induces a new vertical component distribution favorable for enhancing the internal quantum efficiency (ηIQE ) of the devices. To investigate the 3D BHJ morphology, novel time‐of‐flight secondary‐ion mass spectroscopy studies are employed along with conventional methods, such as UV‐vis absorption, X‐ray diffraction, and high‐resolution transmission electron microscopy studies. The ηIQE of the devices are also compared after solvent annealing for different times, which clearly shows the effect of the vertical component distribution on the performance of BHJ polymer solar cells. In addition, the fabrication of high‐performance P3HT:PCBM solar cells using the optimized solvent‐annealing method is reported, and these cells show a mean power‐conversion efficiency of 4.12% under AM 1.5G illumination conditions at an intensity of 100 mW cm−2.

Bibliography

Jo, J., Na, S., Kim, S., Lee, T., Chung, Y., Kang, S., Vak, D., & Kim, D. (2009). ThreeâDimensional Bulk Heterojunction Morphology for Achieving High Internal Quantum Efficiency in Polymer Solar Cells. Advanced Functional Materials, 19(15), 2398â2406. Portico.

Authors 8

Jang Jo (first)
Seok‐In Na (additional)
Seok‐Soon Kim (additional)
Tae‐Woo Lee (additional)
Youngsu Chung (additional)
Seok‐Ju Kang (additional)
Doojin Vak (additional)
Dong‐Yu Kim (additional)

References 31 Referenced 233

Dates

Type	When
Created	16 years, 1 month ago (July 9, 2009, 9:10 p.m.)
Deposited	1 year, 11 months ago (Sept. 28, 2023, 7:20 p.m.)
Indexed	3 months, 2 weeks ago (May 14, 2025, 4:46 a.m.)
Issued	16 years ago (Aug. 3, 2009)
Published	16 years ago (Aug. 3, 2009)
Published Online	16 years ago (Aug. 3, 2009)
Published Print	16 years ago (Aug. 10, 2009)

Funders 0

None

BibTeX

@article{Jo_2009, title={Three‐Dimensional Bulk Heterojunction Morphology for Achieving High Internal Quantum Efficiency in Polymer Solar Cells}, volume={19}, ISSN={1616-3028}, url={http://dx.doi.org/10.1002/adfm.200900183}, DOI={10.1002/adfm.200900183}, number={15}, journal={Advanced Functional Materials}, publisher={Wiley}, author={Jo, Jang and Na, Seok‐In and Kim, Seok‐Soon and Lee, Tae‐Woo and Chung, Youngsu and Kang, Seok‐Ju and Vak, Doojin and Kim, Dong‐Yu}, year={2009}, month=aug, pages={2398–2406} }

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