Modification of Structural, Optical, and Electrical Properties of PVA/PVP Blend Filled by Nanostructured Titanium Dioxide for Optoelectronic Applications

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

ECS Journal of Solid State Science and Technology Pub Date : 2024-09-17 DOI:10.1149/2162-8777/ad7902

Asma Alkabsh

{"title":"Modification of Structural, Optical, and Electrical Properties of PVA/PVP Blend Filled by Nanostructured Titanium Dioxide for Optoelectronic Applications","authors":"Asma Alkabsh","doi":"10.1149/2162-8777/ad7902","DOIUrl":null,"url":null,"abstract":"The PVA/PVP/TiO2 films were prepared using different TiO2 concentrations by solvent casting technique. An analysis was conducted to investigate the influence of TiO2 on the characteristics of PVA/PVP blends. The FTIR, UV/visible spectroscopy, and electrical bridge circuits were used to characterize the prepared nanocomposite films. The structural changes of the nanocomposite relative to pure PVA/PVP are indicated by FTIR spectra. The optical studies demonstrate that by increasing the TiO2 concentration inside PVA/PVP blends, the band gaps reduce from 5.40 eV for PVA/PVP to 4.20 eV for PVA/PVP/TiO2 (10 wt%), also the refractive indices the nanocomposites increase from 1.2020 for PVA/PVP blend into 2.5380 for PVA/PVP/TiO2 (10 wt%). Also, the transmittance decreased from 97.6% for PVA/PVP blend to approximately 55.4% at the largest concentration of TiO2. Additionally, studies were conducted on the parameters, as well, ac conductivity (σac). The outcomes of dielectric parameters of the prepared films are enhanced by the doping of TiO2 with different concentrations and dielectric relaxation is observed. The hopping mechanism of PVA/PVP/TiO2 films is supported by the ac conductivity. It is found that adding 10 wt% TiO2 inside PVA/PVP matrix at 5 MHz increases the conductivity of the pure PVA/PVP blend by 4.46 times. Highlights The impact of TiO2 nanoparticles on the PVA/PVP blend has been investigated. Optical and electrical properties have been significantly induced by TiO2 embedded on PVA/PVP. The optical parameters affirm that the TiO2 affect the optical response of PVA/PVP blend. The electrical parameters show amendments in AC electrical conductivity. The use of TiO2 in PVA/PVP is improving the optical and electrical properties of nanocomposites.","PeriodicalId":11496,"journal":{"name":"ECS Journal of Solid State Science and Technology","volume":"15 1","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ECS Journal of Solid State Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1149/2162-8777/ad7902","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The PVA/PVP/TiO2 films were prepared using different TiO2 concentrations by solvent casting technique. An analysis was conducted to investigate the influence of TiO2 on the characteristics of PVA/PVP blends. The FTIR, UV/visible spectroscopy, and electrical bridge circuits were used to characterize the prepared nanocomposite films. The structural changes of the nanocomposite relative to pure PVA/PVP are indicated by FTIR spectra. The optical studies demonstrate that by increasing the TiO2 concentration inside PVA/PVP blends, the band gaps reduce from 5.40 eV for PVA/PVP to 4.20 eV for PVA/PVP/TiO2 (10 wt%), also the refractive indices the nanocomposites increase from 1.2020 for PVA/PVP blend into 2.5380 for PVA/PVP/TiO2 (10 wt%). Also, the transmittance decreased from 97.6% for PVA/PVP blend to approximately 55.4% at the largest concentration of TiO2. Additionally, studies were conducted on the parameters, as well, ac conductivity (σac). The outcomes of dielectric parameters of the prepared films are enhanced by the doping of TiO2 with different concentrations and dielectric relaxation is observed. The hopping mechanism of PVA/PVP/TiO2 films is supported by the ac conductivity. It is found that adding 10 wt% TiO2 inside PVA/PVP matrix at 5 MHz increases the conductivity of the pure PVA/PVP blend by 4.46 times. Highlights The impact of TiO2 nanoparticles on the PVA/PVP blend has been investigated. Optical and electrical properties have been significantly induced by TiO2 embedded on PVA/PVP. The optical parameters affirm that the TiO2 affect the optical response of PVA/PVP blend. The electrical parameters show amendments in AC electrical conductivity. The use of TiO2 in PVA/PVP is improving the optical and electrical properties of nanocomposites.

查看原文本刊更多论文

用纳米结构二氧化钛填充 PVA/PVP 混合物，改变其结构、光学和电学特性，以实现光电应用

采用溶剂浇铸技术，使用不同浓度的 TiO2 制备了 PVA/PVP/TiO2 薄膜。分析研究了 TiO2 对 PVA/PVP 混合物特性的影响。傅立叶变换红外光谱、紫外/可见光谱和电桥电路用于表征制备的纳米复合薄膜。傅立叶变换红外光谱显示了纳米复合材料相对于纯 PVA/PVP 的结构变化。光学研究表明，随着 PVA/PVP 共混物中 TiO2 浓度的增加，带隙从 PVA/PVP 的 5.40 eV 减小到 PVA/PVP/TiO2 (10 wt%)的 4.20 eV，纳米复合材料的折射率也从 PVA/PVP 共混物的 1.2020 增加到 PVA/PVP/TiO2 (10 wt%)的 2.5380。此外，透射率从 PVA/PVP 混合物的 97.6% 降至 TiO2 浓度最大时的约 55.4%。此外，还对参数以及交流电导率（σac）进行了研究。不同浓度的 TiO2 掺杂会增强所制备薄膜的介电参数，并观察到介电弛豫。PVA/PVP/TiO2 薄膜的跳变机制得到了交流电导率的支持。研究发现，在 5 MHz 频率下，在 PVA/PVP 基体中添加 10 wt% 的 TiO2 可使纯 PVA/PVP 混合物的电导率提高 4.46 倍。亮点研究了 TiO2 纳米粒子对 PVA/PVP 混合物的影响。在 PVA/PVP 上嵌入 TiO2 后，其光学和电学特性得到了显著改善。光学参数表明，TiO2 影响了 PVA/PVP 混合物的光学响应。电学参数显示交流导电性有所改善。在 PVA/PVP 中使用 TiO2 改善了纳米复合材料的光学和电学性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ECS Journal of Solid State Science and Technology MATERIALS SCIENCE, MULTIDISCIPLINARY-PHYSICS, APPLIED

CiteScore

4.50

自引率

13.60%

发文量

455

期刊介绍： The ECS Journal of Solid State Science and Technology (JSS) was launched in 2012, and publishes outstanding research covering fundamental and applied areas of solid state science and technology, including experimental and theoretical aspects of the chemistry and physics of materials and devices. JSS has five topical interest areas: carbon nanostructures and devices dielectric science and materials electronic materials and processing electronic and photonic devices and systems luminescence and display materials, devices and processing.