• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physics and Materials Chemistry >In-situ Synthesis of PVA/HgS Nanocomposite Films and Tuning Optical Properties
【24h】

In-situ Synthesis of PVA/HgS Nanocomposite Films and Tuning Optical Properties

机译：PVA / HgS纳米复合薄膜的原位合成及光学性质的调控

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Polymer based nanocomposite films of polyvinyl alcohol (PVA) doped with mercury sulfide (HgS) were prepared via in-situ chemical reduction and the solution cast methods, with different HgS concentrations, in order to study the effect of HgS content on optical properties of PVA. The nanocomposites films were characterized using FTIR, XRD, and SEM. The UV-Visible absorption spectra in the wavelength range (190–1100) nm were analyzed in terms of absorption formula for non-crystalline materials. The band gap and the fundamental optical constants of the prepared samples have been investigated and showed a clear dependence on the HgS concentration. The observed value of band gap for pure polyvinyl alcohol is about 6.27 eV and decreases to a value 4.88 eV for the film of 0.04M HgS content. The refractive index and consequently the related dispersion parameters of PVA and PVA/HgS nanocomposite versus HgS content have been determined and explained using Wemple-DiDomenico single oscillator model.
机译：通过原位化学还原和溶液流延方法制备了掺杂有硫化汞（HgS）的聚乙烯醇（PVA）聚合物基纳米复合膜，不同的HgS浓度，以研究HgS含量对PVA光学性能的影响。使用FTIR，XRD和SEM对纳米复合材料膜进行表征。根据非晶体材料的吸收公式，分析了波长范围（190–1100）nm的紫外可见吸收光谱。已经研究了所制备样品的带隙和基本光学常数，并显示出对HgS浓度的明显依赖性。对于纯聚乙烯醇，带隙的观察值约为6.27 eV，对于0.04M HgS含量的薄膜，其带隙观察值降至4.88 eV。使用Wemple-DiDomenico单振荡器模型确定并解释了PVA和PVA / HgS纳米复合材料的折射率以及相关的色散参数与HgS含量的关系。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号