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
- Authors
- Lee, PS; Han, Q; Yang, HY; Lee, SH; Hwang, YH; Han, SH; Kim, TW
- Issue Date
- Jul-2012
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Organic Photovoltaic Cells; Bulk Heterojunction; Thermal Post-Annealing; Buffer Layer; Power Conversion Efficiency
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.12, no.7, pp.5577 - 5581
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 12
- Number
- 7
- Start Page
- 5577
- End Page
- 5581
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/165186
- DOI
- 10.1166/jnn.2012.6247
- ISSN
- 1533-4880
- Abstract
- 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 degrees 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.
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