Photoconductivity of a Low-Bandgap Conjugated Polymer (pages 632–636)
C. Soci, I.-W. Hwang, D. Moses, Z. Zhu, D. Waller, R. Gaudiana, C. J. Brabec and A. J. Heeger
Version of Record online: 26 JAN 2007 | DOI: 10.1002/adfm.200600199
The photoconductive properties of a low-bandgap conjugated polymer, PCPDTBT (see figure), are studied. Photoresponsivities of PCPDTBT and PCPDTBT:fullerene-derivative (PCBM) blends are comparable to those of poly(3-hexylthiophene), P3HT, and P3HT:PCBM. The spectral sensitivity of PCPDTBT:PCBM extends significantly deeper into the IR than that of P3HT, improving solar-light harvesting and offering potential for use in solar cells.