Provider: Ingenta Connect Database: Ingenta Connect Content: application/x-research-info-systems TY - ABST AU - Lee, P. S. AU - Han, Q. AU - Yang, H. Y. AU - Lee, S. H. AU - Hwang, Y. H. AU - Han, S. H. AU - Kim, T. W. TI - Effect of Thermal Annealing on the Efficiency of Heterojunction Photovoltaic Cells Fabricated Using Poly(3-hexylthiophene) and Methanofullerene, [6,6]-Phenyl C61-Butyric Acid Methyl Ester JO - Journal of Nanoscience and Nanotechnology PY - 2012-07-01T00:00:00/// VL - 12 IS - 7 SP - 5577 EP - 5581 N2 - The effects of thermal annealing on the efficiency of heterojunction photovoltaic (PV) cells that were fabricated using poly(3-hexylthiophene) (P3HT) and methanofullerene, [6,6]-phenyl C61-butyric acid methyl ester (PCBM) were investigated. The absorption spectra showed that the absorption intensity of the P3HT:PCBM layer that was annealed for 5 min had the highest value among the several samples with different annealing temperatures. The atomic force microscopy image showed that the P3HT:PCBM layer that was annealed for 5 min had the best surface morphology. The X-ray photoelectron spectroscopy demonstrated that the P3HT:PCBM layer that was annealed at 140 °C for 10 min enhanced the PCBM aggregation on the surface Al layer that was covered by the P3HT:PCBM layer. The efficiencies of the PV cells that were annealed at 3, 5, and 10 min were approximately 2.7, 4.2, and 3.5%, respectively. Based on the experiment results, the variations in the efficiency of the PV cells due their thermal treatment were described. UR - https://www.ingentaconnect.com/content/asp/jnn/2012/00000012/00000007/art00082 M3 - doi:10.1166/jnn.2012.6247 UR - https://doi.org/10.1166/jnn.2012.6247 ER -