Device Performance of P3HT/C70-Methanofullerene Bulk-Heterojunction Polymer Photovoltaic Cells
In order to more improve the performance of the existing P3HT:C60 polymer photovoltaic cells, we adopted soluble C70 insteade of C60. The absorption spectra of soluble C70 showed a significant increase of visible range absorption, resulting in the enhanced photocurrent. To optimize the device fabrication, we controlled the solvent, concentration of polymer solution and the thickness of photo-active layer. The best power conversion efficiency obtained in our P3HT:C70 photovoltaic cells was about 3.0 % under AM 1.5G condition.
Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park
H. J. Kim et al., "Device Performance of P3HT/C70-Methanofullerene Bulk-Heterojunction Polymer Photovoltaic Cells", Solid State Phenomena, Vols. 124-126, pp. 935-938, 2007