Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 45, 2014
Previous Article Next Article

Comparison of additive amount used in spin-coated and roll-coated organic solar cells

Author affiliations

Abstract

All-polymer and polymer/fullerene inverted solar cells were fabricated by spin-coating and roll-coating processes. The spin-coated small-area (0.04 cm2) devices were fabricated on indium tin oxide (ITO) coated glass substrates in nitrogen. The roll-coated large-area (1.0 cm2) devices were prepared on ITO-free flexible substrates under ambient conditions. The use of a solvent additive, 1,8-diiodooctane (DIO), facilitated phase separation and enhanced power conversion efficiencies (PCEs). The PCE of polymer/fullerene solar cells increased from 4.58% to 8.12% with 2.5% (v/v) DIO when using the spin-coating process, and increased from 1.37% to 2.09% with 5% (v/v) DIO in the roll-coating process. The PCE of all-polymer solar cells increased from 1.44% to 3.51% with 4% (v/v) DIO when employing the spin-coating process. For the roll-coated large area devices the PCE increased from 0.15% to 0.73% with 9% (v/v) DIO. The optimal amounts of DIO, when using the roll-coating process for the two different active layers (5% and 9% respectively) are significantly higher than those for the spin-coating process (2.5% and 4%, respectively), which is ascribed to a fundamentally different drying mechanism.

Graphical abstract: Comparison of additive amount used in spin-coated and roll-coated organic solar cells

Back to tab navigation

Article information


Submitted
18 Sep 2014
Accepted
07 Oct 2014
First published
07 Oct 2014

J. Mater. Chem. A, 2014,2, 19542-19549
Article type
Paper

Comparison of additive amount used in spin-coated and roll-coated organic solar cells

P. Cheng, Y. Lin, N. K. Zawacka, T. R. Andersen, W. Liu, E. Bundgaard, M. Jørgensen, H. Chen, F. C. Krebs and X. Zhan, J. Mater. Chem. A, 2014, 2, 19542
DOI: 10.1039/C4TA04906C

Social activity

Search articles by author

Spotlight

Advertisements