Journal
ANALYTICAL CHEMISTRY
Volume 82, Issue 5, Pages 1669-1673Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac901992c
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- National Science Council (NSC), Taiwan [NSC 97-2120-M-002-012, NSC 96-2628-E-007-030-MY2]
- Academia Sinica, Taiwan
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In this study, the exciton lifetime images within the photoactive layers of poly(3-hexylthiophene) (P3HT) kind [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) are revealed by confocal optical microscopy combined with the fluorescence module. The images reveal that the active layers during slow solvent evaporation provide 3D pathways for charge transport and the concentration gradient through the film which reflects the better cell performance. This technique offers a great help to investigate the 3D optical-physical property without destroying the blends.
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