Photonics Research, Volume. 8, Issue 1, 91(2020)
Nonequilibrium hot-electron-induced wavelength-tunable incandescent-type light sources On the Cover
Fig. 1. EL emission characteristics from single AuNRs@ZnO:Ga MW-based incandescent-type light source (the extinction peak of Au-nanorod, 695 nm). (a) The extinction spectrum of Au nanorods, with corresponding TEM image of the Au nanorods demonstrated in the inset. (b) SEM image of single AuNRs@ZnO:Ga MW. (c) Amplified SEM image of Au nanorods deposited on the MW. (d)
Fig. 2. (a) Optical photograph of the synthesized ZnO:Ga MWs. (b) SEM image of single ZnO:Ga MW, with perfect quadrilateral cross section displayed in the inset (scale bar, 12 μm). (c) SEM image of ZnO:Ga MW prepared with Au nanorods decoration (the spin-coating number, ×1). (d) TEM images of the Au nanorods with controlled aspect ratio. (e) The extinction spectra of Au nanorods with controlled aspect ratio. (f) PL emissions from ZnO:Ga MW prepared via Au nanorods decoration, with the controlled aspect ratios. (g)
Fig. 3. Photoconductive behavior of single AuNRs@ZnO:Ga MW [Au nanorod in Fig.
Fig. 4. Electrical field intensity
Fig. 5. (a) Schematic illustration of the modulation of Au-nanorod plasmons on the incandescent-type lighting features of single ZnO:Ga MW-based fluorescent light source. (b) Normalized intensities of the EL spectrum from single bare ZnO:Ga MW-based fluorescent light source, the EL spectrum from single AuNRs@ZnO:Ga MW-based fluorescent light source, and the extinction spectrum of the deposited Au nanorods. (c) Micrographs of bright visible light emitting from an electrically driven single AuNRs@ZnO:Ga MW-based incandescent-type light source in the dark field and bright field (scale bar, 200 μm). (d) Optical microscopic images of bright visible light emitting from electrically driven single ZnO:Ga MW prepared with partial Au nanorods decoration (scale bar, 300 μm).
Fig. 6. Schematic diagram of the working principle of bright visible light emitting from electrically biased single AuNRs@ZnO:Ga MW-based incandescent-type light source.
Fig. 7. Wavelength-tunable emissions from single AuNRs@ZnO:Ga MW-based incandescent-type light source: (a)
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Zhipeng Sun, Mingming Jiang, Wangqi Mao, Caixia Kan, Chongxin Shan, Dezhen Shen. Nonequilibrium hot-electron-induced wavelength-tunable incandescent-type light sources[J]. Photonics Research, 2020, 8(1): 91
Category: Optoelectronics
Received: Jul. 15, 2019
Accepted: Nov. 5, 2019
Published Online: Dec. 23, 2019
The Author Email: Mingming Jiang (mmjiang@nuaa.edu.cn)