Photovoltaic Properties of Poly (3-Hexylthiophene): [6, 6]-Phenyl C61-Butyric Acid 3-Ethylthiophene Thin Films

Authors B.M. Omer1,2

1 Department of Physics, College of Science and Arts-Ranyah, Taif University, Kingdom Saudi Arabia

2 Department of Applied Physics, Faculty of Applied Science and Computer, Omdurman Ahlia University, P.O.Box 786, Omdurman-Sudan

Issue Volume 5, Year 2013, Number 3
Dates Received 15 February 2013; published online 12 July 2013
Citation B.M. Omer, J. Nano- Electron. Phys. 5 No 3, 03011 (2013)
PACS Number(s) 78.66.Qn,78.40.Me
Keywords Poly3-Hexylthiophene, Modified fullerene (3) , Organic solar cell (3) , Open circuit voltage (2) .
Annotation We fabricated and studied the electrical and photovoltaic properties of organic solar cell based on poly (3-hexylthiophene) (P3HT) as an electron donor blended with the acceptor [6, 6]-Phenyl C61-Butyric Acid 3-Ethylthiophene Ester (modified fullerene). The active layer composed of (3:1, w/w) mixture of P3HT and the modified fullerene was sandwiched between indium tin oxide (ITO) and aluminum (Al). The ideality factor n and barrier hight b values were determined from the dark current density-voltage characteristics and found as 2.45 and 0.78 eV, respectively. The device shows photovoltaic behavior with an open circuit voltage of 400 mV, short circuit current of 22.9 A/cm2 and fill factor 0.32 under 2.8 mW/cm2 light intensity.

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