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Issue 44, 2019
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Facile synthesized ZnO microcrystals for random microlasers and incandescent-type light sources

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Abstract

In this context, well-crystallized ZnO microcrystals (MCs) with a well-faceted smooth surface were successfully synthesized. Due to the outstanding optical response and well-faceted crystallites, the as-synthesized low-dimensional crystals were employed to construct ultraviolet microsized random lasers. Additionally, the micro/nanocrystal being foreseen as key elements were deposited on the pre-synthesized Ga-doped ZnO microwires (ZnO/ZnO:Ga MWs) using a two-step vapor-transporting synthesis method. By adjusting the as-synthesized condition, the incorporation of ZnO MCs can be utilized to tailor the fundamental optical and electronic transport properties of the pre-synthesized MWs. In particular, a single ZnO/ZnO:Ga MW was selected to construct a typical incandescent light source, with the lighting being color-tuned in a wide spectral region. The intrinsic working principle of the color-tuning electroluminescence may be attributed to type-II energy band alignment towards the interface of ZnO/ZnO:Ga. Therefore, individual ZnO/ZnO:Ga MWs can endow a new sense of the oldest and simplest incandescent-type sources. It can be anticipated that the lighting features of ZnO MC sheathed ZnO:Ga MW radial structures are extremely attractive for potential applications in ZnO based optoelectronic devices, such as microsized diodes and lasers, waveguides, high gain photodetectors, etc.

Graphical abstract: Facile synthesized ZnO microcrystals for random microlasers and incandescent-type light sources

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Publication details

The article was received on 24 Aug 2019, accepted on 20 Sep 2019 and first published on 20 Sep 2019


Article type: Paper
DOI: 10.1039/C9CE01343A
CrystEngComm, 2019,21, 6772-6783

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    Facile synthesized ZnO microcrystals for random microlasers and incandescent-type light sources

    J. Ji, M. Jiang, W. Mao, P. Wan and C. Kan, CrystEngComm, 2019, 21, 6772
    DOI: 10.1039/C9CE01343A

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