Abstract
We compare organic donor/acceptor heterojunction photovoltaic devices based on copper phthalocyanine (CuPc) as the donor and [6,6]-phenyl C60 butyric acid methyl ester (PCBM) or buckminsterfullerene (C60) as the acceptor. The effect of the two acceptors on open-circuit voltage and short-circuit current density is studied. Improved interface properties, optimal energy level matching, and more balanced charge transport are believed to be the reasons for better performance of CuPc/PCBM heterojunction device, in terms of photocurrent and fill factor. The energy conversion efficiency of the devices under AM1.5G solar illumination at 130 mW cm2 is improved to 1.18%, up from 0.74%.
Original language | English |
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Article number | 153504 |
Journal | Applied Physics Letters |
Volume | 88 |
Issue number | 15 |
DOIs | |
Publication status | Published - 10 Apr 2006 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)