Nanoscale optoelectronic properties of organic p-n junction P3HT/PCBM nanoparticles hybridized with CdSe/ZnS quantum dots
- Authors
- Park, Cheol-Joon; Lee, Yong-baek; Jeon, Sumin; Kim, Jeongyang; Lee, Kwang-Sup; Joo, Jinsoo
- Issue Date
- 7월-2014
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Poly(3-hexylthiophene); [6,6]-Phenyl C-61-butyric acid methyl ester; Quantum dots; Photoluminescence; Photocurrent
- Citation
- SYNTHETIC METALS, v.193, pp.17 - 22
- Indexed
- SCIE
SCOPUS
- Journal Title
- SYNTHETIC METALS
- Volume
- 193
- Start Page
- 17
- End Page
- 22
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/98155
- DOI
- 10.1016/j.synthmet.2014.03.023
- ISSN
- 0379-6779
- Abstract
- Organic p-n junction nanoparticles (NPs) of p-type poly(3-hexylthiophene) (P3HT) and n-type [6,6]phenyl C-61-butyric acid methyl ester (PCBM) with approximate diameters of 80-250 nm were fabricated by a mini-emulsion method. Various concentrations of functionalized CdSe/ZnS quantum dots (QDs) were hybridized with P3HT/PCBM NPs. The photoluminescence (PL) spectra of the QDs mostly overlapped the absorption spectra of the P3HT/PCBM NPs, suggesting the activation of energy and/or charge-transfer effects. Using a high-resolution laser confocal microscope (LCM), we observed that the LCM PL intensity of a single P3HT/PCBM NP quenched with increasing QD concentration. Conducting atomic force microscopy revealed that the photocurrent of the P3HT/PCBM NP was enhanced as the QD concentration increased. After the hybridization of the P3HT/PCBM NPs with the QDs, the energy/charge-transfer effects and the charge dissociation of excitons with incident light have been more active, resulting in the increased photocurrent. (C) 2014 Elsevier B.V. All rights reserved.
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