Optimization of electron transport and cathode materials for efficient organic solar cells

Alexander Colsmann; Johannes Junge; Thomas Wellinger; Christian Kayser; Uli Lemmer

doi:10.1117/12.663004

20 April 2006 Optimization of electron transport and cathode materials for efficient organic solar cells

Alexander Colsmann, Johannes Junge, Thomas Wellinger, Christian Kayser, Uli Lemmer

Proceedings Volume 6192, Organic Optoelectronics and Photonics II; 619220 (2006) https://doi.org/10.1117/12.663004
Event: SPIE Photonics Europe, 2006, Strasbourg, France

Abstract

In this work we discuss improvements of organic solar cells based on poly(3-hexylthiophene-2,5-diyl) : C_61-butyric acid methyl ester (P3HT:PCBM) blends. The polymer layer is combined with various electron transport materials and different cathodes. We were able to utilize the good charge carrier separation and transport properties of the P3HT:PCBM blend together with the flexibility of evaporated heterostructures. The systematic use of different cathodes such as calcium, aluminium/lithiumfluoride and organic intermediate layers resulted in higher fill factors and open circuit voltages compared to simple aluminium cathodes. In particular we studied the influence of additional layers of electron transport layer consisting of C₆₀, lithium doped bathophenanthroline (BPhen:Li) 2-(4-tert-butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole (PBD) and 2,9- dimethyl-4,7-diphenyl-1,10-phenantrolene (BCP) on the cell properties. Solar cells with power conversion efficiencies well above 3% have been fabricated.

Citation Download Citation

Alexander Colsmann, Johannes Junge, Thomas Wellinger, Christian Kayser, and Uli Lemmer "Optimization of electron transport and cathode materials for efficient organic solar cells", Proc. SPIE 6192, Organic Optoelectronics and Photonics II, 619220 (20 April 2006); https://doi.org/10.1117/12.663004

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available