Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 29, Pages 24422-24427Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b05937
Keywords
conducting polymer; orientation; morphology; charge transport; laser direct writing; polymer solar cells
Funding
- Center for Advanced Meta-Materials(CAMM) - Ministry of Science, ICT and Future Planning as Global Frontier Project [CAMM 2014M3A6B3063707]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Korean Government [NRF2015M2A2A6A03044907]
- World Class 300 project of the Small and Medium Business Administration (SMBA, Korea) [S2317456]
- Korea Technology & Information Promotion Agency for SMEs (TIPA) [S2317456] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We report femtosecond infrared laser-induced selective tailoring of carrier transport as well as surface morphology on a conducting polymer blend thin film. Maximal 2.4 times enhancement on vertical current transport in poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester, was achieved by this irradiation. The laser irradiation induced a photo expansion without deteriorating its molecular structure and the film morphology could be customized in the micron scale by adjusting the laser writing parameters. In the photoexpanded region, the face-on populations were about 2.2 times larger in comparison with the pristine region, which was a major contributor to the enhanced carrier transport.
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