Enhanced efficiency of polymer:fullerene bulk heterojunction solar cells with the insertion of thin pyronin B layer near the Al electrode

J. Y. Kim; Y. C. Shin; K. M. Park; C. H. Lee

doi:10.1117/12.620957

3 October 2005 Enhanced efficiency of polymer: fullerene bulk heterojunction solar cells with the insertion of thin Pyronin B layer near the Al electrode

J. Y. Kim, Y. C. Shin, K. M. Park, C. H. Lee

Author Affiliations +

Proceedings Volume 5938, Organic Photovoltaics VI; 59381I (2005) https://doi.org/10.1117/12.620957
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We show that the insertion of thin interfacial layers of pyronin B between the conjugated polymer-methanofullerene blend and Al electrode enhances the open-circuit voltage (V_oc) and short-circuit current density (J_sc). The cells based on blends of poly[2-methoxy,5-(3',7'-dimethyl-octyloxy)]-p-phenylene vinylene (MDMO-PPV) and [6,6]-phenyl C61 butyric acid methyl ester (PCBM) with the pyronin B layer (~ 1.5 nm) shows V_oc~0.86 V, J_sc~3.36 mA/cm² and the power conversion efficiency of ~1.46 % under white light photoexcitation of about 80 mW/cm², similar to the effect of thin LiF layer. Compared to cells without the Pyronin B layer, the power conversion efficiency increases up to about 40 %. Similar effect is also obtained in poly(3-octylthiophene) (P3OT)-PCBM blends. The increased solar cell performance can be attributed to enhanced carrier extraction efficiency at the polymer blend/Al interfaces when pyronin B was inserted. This effect is considered as the reduced Al work function with the thin Pyronin B interfacial layer.

Citation Download Citation

J. Y. Kim, Y. C. Shin, K. M. Park, and C. H. Lee "Enhanced efficiency of polymer: fullerene bulk heterojunction solar cells with the insertion of thin Pyronin B layer near the Al electrode", Proc. SPIE 5938, Organic Photovoltaics VI, 59381I (3 October 2005); https://doi.org/10.1117/12.620957

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