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首页> 外文期刊>Physica, B. Condensed Matter >Effect of swift heavy ion irradiation on photoluminescence properties of ZnO/PMMA nanocomposite films
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Effect of swift heavy ion irradiation on photoluminescence properties of ZnO/PMMA nanocomposite films

机译：快速重离子辐照对ZnO / PMMA纳米复合薄膜光致发光性能的影响

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摘要

We report a study on the SHI induced modifications on structural and optical properties of ZnO/PMMA nanocomposite films. The ZnO nanoparticles were synthesized by the chemical route using 2-mercaptoethanol as a capping agent. The structure of ZnO nanoparticles was confirmed by XRD, SEM and TEM. These ZnO nanoparticles were dispersed in the PMMA matrix to form ZnO/PMMA nanocomposite films by the solution cast method. These ZnO/PMMA nanocomposite films were then irradiated by swift heavy ion irradiation (Ni8 ion beam, 100 MeV) at a fluence of 1×1011 ions/cm2. The nanocomposite films were then characterized by XRD, UVvis absorption spectroscopy and photoluminescence spectroscopy. As revealed from the absorption spectra, absorption edge is not changed by the irradiation but the optical absorption is increased. Enhanced green luminescence at about 527 nm and a less intense blue emission peak around 460 nm were observed after irradiation with respect to the pristine ZnO/PMMA nanocomposite film.
机译：我们报告了有关SHI诱导的ZnO / PMMA纳米复合膜的结构和光学性质的修饰的研究。使用2-巯基乙醇作为封端剂，通过化学途径合成了ZnO纳米粒子。通过XRD，SEM和TEM证实了ZnO纳米颗粒的结构。通过溶液流延法将这些ZnO纳米颗粒分散在PMMA基质中以形成ZnO / PMMA纳米复合膜。然后通过快速重离子辐照（Ni8离子束，100 MeV）以1×1011离子/ cm2的通量辐照这些ZnO / PMMA纳米复合膜。然后通过XRD，UVvis吸收光谱和光致发光光谱对纳米复合膜进行表征。如从吸收光谱揭示的，吸收边缘不会由于照射而改变，但是光吸收增加。相对于原始的ZnO / PMMA纳米复合膜，在辐照后观察到在约527nm处增强的绿色发光和在460nm附近的较低强度的蓝色发射峰。

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