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首页> 外文期刊>Physica, B. Condensed Matter >Structural phase diagram for ZnS nanocrystalline thin films under swift heavy ion irradiation
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Structural phase diagram for ZnS nanocrystalline thin films under swift heavy ion irradiation

机译：快速重离子辐照下ZnS纳米晶薄膜的结构相图

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摘要

The synthesis of nanocrystalline ZnS thin films by pulsed laser deposition and their modification by swift heavy ions are presented. The irradiations with 150 MeV Ni ions at fluences of 1×10~(11), 1×10~(12) and 1×10~(13) ions/cm~2 have been used for these studies. Irradiation results in structural phase transformation and bandgap modification of these films are investigated by using X-ray diffraction and UVvisible absorption measurements, respectively. Since stoichiometry changes induced by irradiation can contribute to the modification of these properties, elastic recoil detection analysis has been performed on pristine and 150 MeV Ni ions irradiated ZnS thin films using a 120 MeV Ag ion beam. The stoichiometry of the films has been found to be similar for pristine and ion irradiated samples. A structural phase diagram based on thermal and pressure spikes has been constructed to explain the structural phase transformation.
机译：提出了利用脉冲激光沉积法合成纳米ZnS薄膜及其快速重离子改性的方法。这些研究使用了150 MeV Ni离子以1×10〜（11），1×10〜（12）和1×10〜（13）离子/ cm〜2的通量辐照。分别通过X射线衍射和UV可见吸收测量研究了这些膜在结构相变和带隙修饰方面的辐照结果。由于辐照引起的化学计量变化可有助于改变这些性能，因此，使用120 MeV Ag离子束对原始和150 MeV Ni离子辐照的ZnS薄膜进行了弹性反冲检测分析。已经发现，对于原始和离子辐照样品，膜的化学计量相似。已构造了基于热和压力峰值的结构相图来解释结构相变。

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