Journal
NANO LETTERS
Volume 19, Issue 11, Pages 7877-7886Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.9b02943
Keywords
Shpol'skii effect; organic nanowires; quasi-line spectra; crystallinity
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Funding
- ANU Ph.D. student scholarship
- Australian Research Council [DP180103238]
- ANU Major Equipment Committee Fund [19MEC01, 17MEC25]
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Zero-phonon line (ZPL) emissions have key applications in single-photon emission sources, quantum information processing, and single-molecule spectroscopy. All recent attempts to realize ZPL emissions are based on the techniques of confining and doping molecules in matrixes or solutions in low-temperature Shpol'skii systems. The requirement of two-component systems reduces the light emission efficiency from the molecules and limits their applications in solid-state electronic applications and quantum computing devices. Here, we report the first experimental demonstration of the Shpol'skii effect in a one-component organic solid-state system at low temperature. We observe a ZPL emission with a width similar to 1 of to 2 nm and a high value of the Debye-Waller factor (0.72) from our epitaxially grown highly crystalline and ordered 1D organic nanowire, which is attributed to a specific molecular configuration and a higher degree of molecular orientation as compared to that of the bulk thin film counterpart. Our results pave the way for organic 1D wires (with quasi-line spectra) for applications in lasing, nanosensors, and interconnects/functional units in next-generation miniaturized optoelectronics.
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