A universal method to form the equivalent ohmic contact for efficient solution-processed organic tandem solar cells

Li N, Stubhan T, Krantz J, Machui F, Turbiez M, Ameri T, Brabec C (2014)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2014

Journal

Journal of Materials Chemistry A Royal Society of Chemistry

Book Volume: 2

Pages Range: 14896-14902

Journal Issue: 36

DOI: 10.1039/c4ta03182b

Abstract

The highly transparent, conductive and robust intermediate layer (IML) is the primary challenge for constructing efficient organic tandem solar cells. In this work, we demonstrate an easy but generic approach to realize the fully functional, solution-processed IMLs. In detail, solution-processed silver-nanowires are packed at low concentration between hole- and electron-transporting layers to convert an otherwise rectifying interface into an ohmic interface. The IMLs are proven to be of ohmic nature under applied bias, despite the unipolar charge selectivity of the single layers. Ohmic recombination within IMLs is further proven in organic tandem solar cells fabricated by doctor-blading under ambient conditions. The tandem solar cells based on PCDTBT:[70]PCBM as the bottom cell and pDPP5T-2:[60]PCBM as the top cell give a power conversion efficiency of 7.25%, which is among the highest values for solution-processed organic tandem solar cells fabricated by using a roll-to-roll compatible deposition method in air. © the Partner Organisations 2014.

Authors with CRIS profile

Ning Li Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Tobias Stubhan Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Johannes Krantz Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Florian Machui Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Tayebeh Ameri Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET)

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM)

Involved external institutions

BASF Schweiz AG CH Switzerland (CH)

How to cite

APA:

Li, N., Stubhan, T., Krantz, J., Machui, F., Turbiez, M., Ameri, T., & Brabec, C. (2014). A universal method to form the equivalent ohmic contact for efficient solution-processed organic tandem solar cells. Journal of Materials Chemistry A, 2(36), 14896-14902. https://doi.org/10.1039/c4ta03182b

MLA:

Li, Ning, et al. "A universal method to form the equivalent ohmic contact for efficient solution-processed organic tandem solar cells." Journal of Materials Chemistry A 2.36 (2014): 14896-14902.

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