Tuning strain and photoluminescence of confined Au nanoparticles by hydrogen passivation
Tuning strain and photoluminescence of confined Au nanoparticles by hydrogen passivation
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DOI：
10.1039/c6ra27499d
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发表时间：
2017-01
期刊：
影响因子：
3.9
通讯作者：
C. Yuan;Y. Mei;Ting Yu;Yong Yang;Qinliang Li;A. Hong;Keng Xu;Xingfang Luo;Jun He;W. Lei
中科院分区：
文献类型：
--
作者：
C. Yuan;Y. Mei;Ting Yu;Yong Yang;Qinliang Li;A. Hong;Keng Xu;Xingfang Luo;Jun He;W. Lei
采用脉冲激光沉积法和快速热退火技术合成了Al_2O_3基质中的Au纳米颗粒。受限的金纳米粒子在生长过程中经历了压缩应变。结果表明，氢钝化可以通过改变受限金纳米粒子的应变和缺陷态来增强和调整受限金纳米粒子的光学性质。这些发现为提高贵金属纳米颗粒材料在光电子器件和光子器件中的潜在应用提供了一种深入的见解和有用的方法。
Au nanoparticles confined in an Al2O3 matrix are synthesized using pulsed laser deposition method and rapid thermal annealing technique. The confined Au nanoparticles experience a compressive strain during the growth process. It is demonstrated that hydrogen passivation can be used to enhance and tailor the optical properties of confined Au nanoparticles by engineering the strain and defect states of the confined Au nanoparticles. The findings provide an insight and useful methodology to improve the emission efficiency of noble metal nanoparticle based materials for potential application in optoelectronic and photonic devices.