Tailored Emission Properties of ZnTe/ZnTe:O/ZnO Core–Shell Nanowires Coupled with an Al Plasmonic Bowtie Antenna Array | Zendy

Kuiying Nie | Zendy; Xuecou Tu | Zendy; J. Li | Zendy; Xuanhu Chen | Zendy; Fangfang Ren | Zendy; Guogang Zhang | Zendy; Lin Kang | Zendy; Shulin Gu | Zendy; Rong Zhang | Zendy; Peiheng Wu | Zendy; Youdou Zheng | Zendy; Hark Hoe Tan | Zendy; C. Jagadish | Zendy; Jiandong Ye | Zendy

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Tailored Emission Properties of ZnTe/ZnTe:O/ZnO Core–Shell Nanowires Coupled with an Al Plasmonic Bowtie Antenna Array

Author(s) -

Kuiying Nie,

Xuecou Tu,

J. Li,

Xuanhu Chen,

Fangfang Ren,

Guogang Zhang,

Lin Kang,

Shulin Gu,

Rong Zhang,

Peiheng Wu,

Youdou Zheng,

Hark Hoe Tan,

C. Jagadish,

Jiandong Ye

Publication year - 2018

Publication title -

acs nano

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.554

H-Index - 382

eISSN - 1936-086X

pISSN - 1936-0851

DOI - 10.1021/acsnano.8b03685

Subject(s) - plasmon , materials science , nanowire , optoelectronics , core (optical fiber) , shell (structure) , antenna (radio) , nanotechnology , composite material , telecommunications , computer science

The ability to manipulate light-matter interaction in semiconducting nanostructures is fascinating for implementing functionalities in advanced optoelectronic devices. Here, we report the tailoring of radiative emissions in a ZnTe/ZnTe:O/ZnO core-shell single nanowire coupled with a one-dimensional aluminum bowtie antenna array. The plasmonic antenna enables changes in the excitation and emission processes, leading to an obvious enhancement of near band edge emission (2.2 eV) and subgap excitonic emission (1.7 eV) bound to intermediate band states in a ZnTe/ZnTe:O/ZnO core-shell nanowire as well as surface-enhanced Raman scattering at room temperature. The increase of emission decay rate in the nanowire/antenna system, probed by time-resolved photoluminescence spectroscopy, yields an observable enhancement of quantum efficiency induced by local surface plasmon resonance. Electromagnetic simulations agree well with the experimental observations, revealing a combined effect of enhanced electric near-field intensity and the improvement of quantum efficiency in the ZnTe/ZnTe:O/ZnO nanowire/antenna system. The capability of tailoring light-matter interaction in low-efficient emitters may provide an alternative platform for designing advanced optoelectronic and sensing devices with precisely controlled response.

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