TITLE

Photoenhanced injection currents in organic solar cells

AUTHOR(S)
Frohne, Holger; McNeill, Christopher R.; Dastoor, Paul C.
PUB. DATE
August 2004
SOURCE
Applied Physics Letters;8/9/2004, Vol. 85 Issue 6, p1042
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Bulk heterojunction organic solar cells with the general structure: indium tin oxide/polyethylenethioxythiophene (PEDOT)/bulk-heterojunction layer/Al with built-in fields between -0.1 and 1 V have been fabricated by electrochemically doping the PEDOT electrode. The active bulk-heterojunction layer consisted of a blend of MDMO-PPV (poly(2-methoxy-5-(3′,7′-dimethyl)octyloxy-1,4-phenylenevinylene)) and PCBM ((6,6)-phenyl-C61-butyric-acid methyl ester)). Measurements of the current–voltage curves with varying light intensities for these devices reveal the presence of light-dependent currents in addition to those from the photogenerated charge carriers. Equivalent circuit modeling indicates that these light-dependent currents most likely originate from photoenhanced injection at the electrodes.
ACCESSION #
14019751

 

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