材料科学
结晶度
电介质
羧甲基纤维素
化学工程
纳米复合材料
聚合物
聚乙烯醇
钙钛矿(结构)
纳米颗粒
聚合物纳米复合材料
傅里叶变换红外光谱
复合材料
纳米技术
光电子学
工程类
冶金
钠
作者
A.A. Al‐Muntaser,Rami Adel Pashameah,Kamal Sharma,Eman Alzahrani,S.T. Hameed,M.A. Morsi
标识
DOI:10.1016/j.optmat.2022.112799
摘要
Hybrids of polymer-perovskite are attractive materials integrating improved physical and chemical properties with a pliability that presents them as fully suitable for electric devices and optoelectronic applications. In the current work, polymer nanocomposite (PNCs) films based on polymer blend matrix (i.e., polyvinyl alcohol (PVA)/carboxymethyl cellulose (CMC); 70/30 wt% weight ratio) reinforced with the solid-state reaction prepared SrTiO3 nanoparticles (NPs) were prepared using the solution casting technique. The crystallinity degree and chemical composition of the resulting samples were investigated by XRD and FTIR spectroscopy to study the influence of SrTiO3 on the blend structure and complexation with the functional groups of the hybrid PVA/CMC system. The SEM images showed a raise in surface roughness with the NPs content. Optical characteristics of PVA/CMC-SrTiO3 PNCs were examined using UV–Vis. Spectrophotometer. The optical gap (Eg) of the pristine PVA/CMC blend was boosted after loading SrTiO3 NPs. The influence of this perovskite on the ac conductivity, dielectric modulus and relaxation were discussed, where the dielectric constant of PNCs was higher than that of pure PVA/CMC preserving a low dielectric loss. From the experimental results, these PNC samples are promising for optical shielding, photosensors, advanced optoelectronics, photosensors, integral thin film capacitors, and high-density storage devices.
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