Luminescence, charge mobility, and optical waveguiding of two-dimensional organic rubrene nanosheets: Comparison with one-dimensional nanorods
| Autor: | Hyunsoo Lee, Jin Sun Jung, Jin Woo Lee, Jinsoo Joo, Hyo Min Kim, Kihyun Kim, Jeongyong Kim, Seong Gi Jo |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Photoluminescence Nanostructure business.industry Stacking Physics::Optics General Chemistry Condensed Matter Physics Electronic Optical and Magnetic Materials Biomaterials chemistry.chemical_compound Crystallinity chemistry Materials Chemistry Optoelectronics Nanorod Electrical and Electronic Engineering Anisotropy Rubrene business Luminescence |
| Zdroj: | Organic Electronics. 13:2047-2055 |
| ISSN: | 1566-1199 |
| DOI: | 10.1016/j.orgel.2012.05.056 |
| Popis: | Intrinsic characteristics of organic and inorganic nanostructures depend on their physical dimensions (i.e., size and shape) and crystallinity. Here, we compared the nanoscale optical and electrical properties of organic rubrene one-dimensional (1-D) nanorods (NRs) and two-dimensional (2-D) nanosheets (NSs). From high-resolution laser confocal microscope photoluminescence (PL) measurements, the light-emission characteristics of 2-D rubrene NSs varied with the crystalline domain direction, indicating intrinsic PL anisotropy, which was distinguishable from 1-D rubrene single NRs, because of anisotropy π–π stacking molecular arrangements. We also observed the variation of charge carrier mobility depending on the measured directions (i.e., anisotropy of charge transport) in rubrene NS-based field-effect transistors. The optical waveguiding properties of rubrene nanostructures were strongly correlated to the dimensionality of materials and PL anisotropy. |
| Databáze: | OpenAIRE |
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