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铝掺杂氧化锌纳米线、纳米带及纳米平面锥形态的光致发光、场发射和飞秒非线性吸收特性。

The photoluminescence, field emission and femtosecond nonlinear absorption properties of Al-doped ZnO nanowires, nanobelts, and nanoplane-cone morphologies.

作者信息

Cao Yu-Tong, Cai Yu, Yao Cheng-Bao, Bao Sheng-Bin, Han Yue

机构信息

Key Laboratory of Photonic and Electric Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University Harbin 150025 Heilongjiang Province China

出版信息

RSC Adv. 2019 Oct 29;9(59):34547-34558. doi: 10.1039/c9ra06480j. eCollection 2019 Oct 23.

DOI:10.1039/c9ra06480j
PMID:35529985
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9073910/
Abstract

Al-doped ZnO (AZO) nanowires, nanobelts and nanoplane-cone nanostructures have been successfully synthesized. The structural, photoluminescence (PL) and field emission (FE) properties of AZO nanowires have been characterized. The dependence of the PL properties of AZO nanostructures excitation laser power in the range from 1 to 12 mW and temperature in the range of 10-273 K was discussed. The PL measurement results demonstrated that the ultraviolet emission came from a near band edge emission, and two peaks in visible light region were due to deep-level emission. Moreover, the AZO nanowires have a relatively stronger ultraviolet emission than other kinds of samples. The FE measurements indicate that the turn-on field for the nanoplane-cone structure is 2.52 V μm, which is smaller than 4.42 V μm for nanowires and 5.28 V μm for nanobelts. In addition, the nonlinear absorption properties of AZO nanowires were measured using a femtosecond Z-scan technique. The effect of morphology on the nonlinear optical absorption properties of AZO nanowires was studied. From the results, the AZO nanowires show reverse saturable absorption (RSA) behavior. Furthermore, the results show that the order of magnitude of the nonlinear absorption coefficient for AZO nanowires is ∼10 cm GW. Our results show that AZO films are a promising candidate in further optoelectronic device applications.

摘要

已成功合成了铝掺杂氧化锌（AZO）纳米线、纳米带和纳米平面-锥纳米结构。对AZO纳米线的结构、光致发光（PL）和场发射（FE）特性进行了表征。讨论了AZO纳米结构的PL特性与激发激光功率（范围为1至12 mW）以及温度（范围为10 - 273 K）之间的关系。PL测量结果表明，紫外发射来自近带边发射，可见光区域的两个峰归因于深能级发射。此外，AZO纳米线的紫外发射比其他种类的样品相对更强。FE测量表明，纳米平面-锥结构的开启场为2.52 V/μm，小于纳米线的4.42 V/μm和纳米带的5.28 V/μm。此外，使用飞秒Z扫描技术测量了AZO纳米线的非线性吸收特性。研究了形貌对AZO纳米线非线性光学吸收特性的影响。结果表明，AZO纳米线呈现反向饱和吸收（RSA）行为。此外，结果表明AZO纳米线的非线性吸收系数量级约为10 cm/GW。我们的结果表明，AZO薄膜在进一步的光电器件应用中是一种有前景的候选材料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/06c67d39761c/c9ra06480j-f10.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/692d7f1f32c4/c9ra06480j-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/e05263057e21/c9ra06480j-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/06c67d39761c/c9ra06480j-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/b9acf0100d7c/c9ra06480j-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/481d8b27607f/c9ra06480j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/81399f6a953d/c9ra06480j-f2.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/635e21026581/c9ra06480j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/0c9d9b6e87f5/c9ra06480j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/af722a6e275e/c9ra06480j-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/6cc4e4a1d667/c9ra06480j-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/692d7f1f32c4/c9ra06480j-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/e05263057e21/c9ra06480j-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6242/9073910/06c67d39761c/c9ra06480j-f10.jpg

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