The photovoltaic properties of phenyl-capped thiophene oligomers

• Published in: Current applied physics pp. 335 - 338
• Main Authors: C. R. McNeill, M. J. Clifton-Smith, J. S. Quinton, B. V. King, S. Hotta, P. C. Dastoor
• Format: Journal Article
• Language: Korean
• Published: 한국물리학회 01.04.2004
• Subjects: 물리학
• ISSN: 1567-1739; 1878-1675

The photovoltaic properties of a series of phenyl-capped oligothiophenes are presented. Photovoltaic devices were prepared assandwich type devices, with thin lms of the oligomers vacuum deposited onto indium tin oxide (ITO) coated glass, and then coatedwith aluminium. The photovoltaic response observed was most pronounced for oligomers containing ve thiophene units, with ashort circuit current of 0.5 mA/cm2 and an open circuit voltage of 1.3 V under 100 mW/cm2 of simulated sunlight. These resultscorrespond to an overall power conversion eciency of. 0.15%, which is remarkably high for a photovoltaic cell made from a single conjugated material, and signicantly greater than similarly prepared octithiophene devices. Short circuit photocurrent actionspectra are also reported for these devices, and their device physics discussed, including the inuence of conjugation length. KCI Citation Count: 7