Donor-Acceptor Distance-Dependent Charge Transfer Dynamics Controlled by Metamaterial Structures
- 주제(키워드) organic semiconductors , metamaterials , charge transfer dynamics , nonlocal effect , Marcus theory
- 주제(기타) Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Optics; Physics, Applied; Physics, Condensed Matter
- 설명문(일반) [Lee, Kwang Jin; Wu, Jeong Weon] Ewha Womans Univ, Dept Phys, Seoul 03760, South Korea; [Xiao, Yiming; Mathevet, Fabrice] Sorbonne Univ, Fac Sci, CNRS, IPCM,UMR 8232,Chim Polymeres, 4 Pl Jussieu, F-75005 Paris, France; [Mager, Loic; Cregut, Olivier] Univ Strasbourg, CNRS, IPCMS, 23 Rue Loess, Strasbourg, France; [Fages, Frederic] Aix Marseille Univ, CNRS, CINaM, UMR 7325, Campus Luminy,Case 913, F-13288 Marseille, France; [Ribierre, Jean-Charles] Kyushu Univ, Ctr Organ Photon & Elect Res, JP-8190395 Fukuoka, Fukuoka, Japan; [Kim, Eun Sun; Wu, Jeong Weon; D'Aleo, Anthony] Inst for Basic Sci Korea, Ctr Quantum Nanosci, Seoul 03760, South Korea; [D'Aleo, Anthony] Joint CNRS Ewha Yonsei Lab, UMI 2002, Bldg Blocks Future Elect Lab 2B FUEL, Seoul, South Korea; [Lee, Kwang Jin] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
- 등재 SCIE, SCOPUS
- 발행기관 AMER CHEMICAL SOC
- 발행년도 2019
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000165914
- 본문언어 영어
- Published As http://dx.doi.org/10.1021/acsphotonics.9b01177
초록/요약
The capability to control charge transfer dynamics in a donor-acceptor molecule is important for efficient optoelectronic devices. Charge transfer dynamics is governed by thermodynamics of donor-acceptor charges in a given dielectric environment. Metamaterial structure has been shown to be able to control charge separation and charge recombination processes via nonlocal effect on dielectric permittivity for a fixed donor-acceptor distance organic film. Here, we report the influence of the metamaterial structure on the donor-acceptor distance dependence of the electron transfer process occurring in liquid crystalline organic semiconductor thin films. By examining the charge recombination rate in three different donor-acceptor distances, it is found that the barrier height beta increases from 0.084 to 0.137 angstrom(-1) by 63% in the presence of metal-dielectric multilayered metamaterial structures. Based on the Marcus theory on the charge transfer process, we show that a further increase in the driving force for a larger donor-acceptor distance is mainly responsible for the barrier height increase in the presence of a multilayered metamaterial substrate when compared with a glass substrate. This study will provide a significant step forward in enabling more efficient hybrid organic-optoelectronic devices associated with the charge transfer process.
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