Jump to main content
Jump to site search

Issue 36, 2014
Previous Article Next Article

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

Author affiliations

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.

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

Back to tab navigation

Supplementary files

Article information


Submitted
23 Jun 2014
Accepted
11 Jul 2014
First published
06 Aug 2014

J. Mater. Chem. A, 2014,2, 14896-14902
Article type
Paper
Author version available

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

N. Li, T. Stubhan, J. Krantz, F. Machui, M. Turbiez, T. Ameri and C. J. Brabec, J. Mater. Chem. A, 2014, 2, 14896
DOI: 10.1039/C4TA03182B

Social activity

Search articles by author

Spotlight

Advertisements