Effects of gold nanorods on the excited-state dynamics and photovoltaic performances of hybrid nanocomposites containing poly(3-hexylthiophene)
SCIE
SCOPUS
- Title
- Effects of gold nanorods on the excited-state dynamics and photovoltaic performances of hybrid nanocomposites containing poly(3-hexylthiophene)
- Authors
- LEE, DONG KI; Jeong, Sugyeong; Park, Jung-Hwa; Park, Soo Young; Jang, Du-Jeon
- Date Issued
- 2016-11
- Publisher
- SPRINGER
- Abstract
- Poly(3-hexylthiophene)-stabilized gold nanorods (Au-NR@P3HT nanocomposites) have been facilely fabricated by incubating Au nanorods (NRs) with thiol-terminated P3HT to investigate the effects of Au NRs on the excited-state dynamics and photovoltaic performances of P3HT. The S-1 decay of Au-NR@P3HT nanocomposites is found to be slower than that of pristine P3HT, suggesting that the stretched-strand conformation of P3HT chains attached to Au NRs makes structural relaxation more difficult. The amplitude of T-1 absorption is much smaller in Au-NR@P3HT nanocomposites than in pristine P3HT, indicating that the intersystem crossing of S-1 excitons into T-1 excitons does not occur efficiently in Au-NR@P3HT nanocomposites due to the nonflexible character of aggregated P3HT chains. From the comparison of the performances of organic photovoltaic devices, we have found that the device with the 3 % embedding of Au-NR@P3HT nanocomposites into the P3HT matrix of the active layer shows significantly improved photovoltaic performances (27 % enhancement in the power conversion efficiency), suggesting that the surface-plasmon resonances of Au NRs enhance the dissociation as well as the generation of excitons highly.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/41303
- DOI
- 10.1007/s10853-016-0200-5
- ISSN
- 0022-2461
- Article Type
- Article
- Citation
- JOURNAL OF MATERIALS SCIENCE, vol. 51, no. 21, page. 9669 - 9678, 2016-11
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.