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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 9
BKCSDE 33(9)
September 20, 2012 


New Donor Materials Based on Thiazole and Triphenylamine for Photovoltaic Devices

Tak-kyun Ro, Jong-In Hong*
Thiazole, Organic photovoltaic cells, Bulk-heterojunction, Triphenylamine
New photovoltaic donor materials, 4,4'-(2,2'-bithiazole-5,5'-diyl)bis(N,N-diphenylbenzenamine) (BDT) and 4- (2,2'-bithiazol-5-yl)-N,N-diphenylbenzenamine (BT), were synthesized. A solution processable triphenylamine- containing bithiazole (BDT and BT) was blended with a [6,6]-phenyl C61 butyric acid methyl ester (PCBM) acceptor to study the performance of small-molecule-based bulk heterojunction (BHJ) photovoltaic devices. Optimum device performance was achieved after annealing, for device with a BDT/PCBM ratio of 1:4. The open-circuit voltage, short-circuit current, and power conversion efficiency of the device with the aforementioned BDT/PCBM ratio were 0.51 V, 4.10 mA cm–2, and 0.68%, respectively, under simulated AM 1.5 solar irradiation (100 mW cm–2).
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