Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 14, Issue 24, Pages 4577-4581Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201901221
Keywords
DCM; Micro-heterostructures; Optical waveguides; Perylene; Vapour-Phase Epitaxy
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Funding
- DST (New Delhi) [INT/RUS/RSF/P-05]
- SERB [CRG-2018/001551]
- CSIR
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Organic micro-heterostructures (MHS) with dual optical emissions are essential to produce miniaturized optical waveguides for wavelength division multiplexing technologies. The bimolecular MHS produced by solution-based bottom-up self-assembly technique often leads to poor surface smoothness, edge imperfection, defects, and unwanted thin films deposits. Conversely, sequential sublimation technique at ambient pressure facilitates effective integration of alpha-perylene micro-square with dicyanomethylene-2-methyl-6-(p-dimethylaminostyryl) 4H-pyran (DCM) microrods in an epitaxial manner to produce MHS. The obtained DCM/perylene MHS act as optical waveguides to produce red (lambda(max)approximate to 670 nm) or/and yellow (lambda(max)approximate to 607 nm) dual optical outputs via an energy transfer mechanism depending upon the heterostructures geometry and optical excitation positions. The presented dual-color emitting MHS optical waveguides are essential for the integrated nano-photonic and optoelectronic device structures.
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