Center for Photonic and Smart Materials (CPSM), Zewail City of Science and Technology, Sheikh Zayed District, 6th of October City, 12588, Giza, Egypt.
Physics Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
J Adv Res. 2014 Jan;5(1):79-86. doi: 10.1016/j.jare.2012.11.008. Epub 2013 Jan 11.
Layers of ethylene carbonate (EC) modified CuI/PVA polymer composites were prepared by growth of CuI nano-particles in an aqueous solution of PVA followed by casting at room temperature. The structural, thermal, optical, electrical and di-electrical characterization of polymer composites was investigated using different techniques. These investigations confirm the growth of CuI nano-particles and reduction of PVA crystallinity by increasing ethylene carbonate concentration. These results show that energy band gap and bulk conductivity increase while activation energy reduces with the increase of EC concentration in the composite. Moreover, the variation of the dielectric permittivity and dielectric loss with EC content are found to obey Debye dispersion relations.
通过在聚乙烯醇（PVA）水溶液中生长 CuI 纳米粒子，然后在室温下浇铸，制备了具有碳酸亚乙酯（EC）层的 CuI/PVA 聚合物复合材料。采用不同技术研究了聚合物复合材料的结构、热、光、电和介电特性。这些研究证实了 CuI 纳米粒子的生长和 PVA 结晶度的降低，这是通过增加碳酸亚乙酯浓度实现的。这些结果表明，随着复合材料中 EC 浓度的增加，能隙和体电导率增加，而激活能降低。此外，还发现介电常数和介电损耗随 EC 含量的变化符合德拜色散关系。
