Origin of the open circuit voltage in conjugated polymer-fullerene photovoltaic cells

Heejoo Kim; Sung Ho Jin; Hongsuk Suh; Kwanghee Lee

doi:10.1117/12.504937

6 February 2004 Origin of the open circuit voltage in conjugated polymer-fullerene photovoltaic cells

Heejoo Kim, Sung Ho Jin, Hongsuk Suh, Kwanghee Lee

Proceedings Volume 5215, Organic Photovoltaics IV; (2004) https://doi.org/10.1117/12.504937
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

We fabricated polymer-fullerene photovoltaic (PV) devices using various conjugated polymers, poly[2-methoxy-5-(2’-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV), poly{2-[4-(3,7-dimethyloctyloxy)-phenoxy]-1,4-phenylenevinyl-ene} (p-DMOP-PPV), and their copolymer system, p-DMOP-co-MEH-PPV. By comparing PV characteristics of such devices with a systematic change of the energy levels (ionization potential Ip and electron affinity E_a), we investigated the origin of open circuit voltage (V_oc) of the devices. Our results indicate that the magnitude of V_oc is governed by the difference between E_a of the fullerene and I_p of the polymer, which is not consistent with previous consideration of the work function difference between electrodes as in conventional metal-insulator-metal type devices.

Citation Download Citation

Heejoo Kim, Sung Ho Jin, Hongsuk Suh, and Kwanghee Lee "Origin of the open circuit voltage in conjugated polymer-fullerene photovoltaic cells", Proc. SPIE 5215, Organic Photovoltaics IV, (6 February 2004); https://doi.org/10.1117/12.504937

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