Modifying optical properties of hydrogen beam irradiated flexible PVA polymeric films

IF 2.7 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Surface Innovations Pub Date : 2023-01-11 DOI:10.1680/jsuin.22.01078

B. M. Alotaibi, A. Atta, M. Atta, E. Abdeltwab, M. Abdel-Hamid

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引用次数: 5

Abstract

In this study, Polyvinyl alcohol (PVA) films were irradiated with hydrogen beam of fluence 8x1017, 16x1017, and 24x1017 ions/cm2 using handmade cold beam ion source. The resulting changes in the structure characteristics and functional groups of irradiated PVA films were studied using XRD and FT-IR methods respectively. In addition, the optical band gaps and Urbach energies of untreated and irradiated PVA were calculated using Tauc’s equation. The tail is 1.29 eV for PVA, improved to 1.59 eV and 4.17 eV when PVA was exposed to 8x1017 and 24x1017 ions/cm2, respectively. Furthermore, the parameters including refractive index, extinction coefficient, conductivities, and permittivity for untreated and treated samples have been calculated. Furthermore, the dispersion characteristics of un-irradiated and treated films are evaluated. With increasing hydrogen fluence of 8x1017 to 24x1017 ions/cm2, the relaxation time is reduced from 2.75x10−14 sec to 0.045x10−14 sec. On the other hand, the optical susceptibility of pure and treated PVA has been calculated. The modification which induced in the optical characteristics of the irradiation films suggests these films to apply in a different uses like optoelectronics devices.

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氢束辐照柔性聚乙烯醇聚合物薄膜光学性能的改性

本研究采用手工冷束离子源，以8 × 1017、16 × 1017和24 × 1017离子/cm2的氢束辐照聚乙烯醇(PVA)薄膜。分别用XRD和FT-IR方法研究了辐照后PVA薄膜结构特征和官能团的变化。此外，利用Tauc方程计算了未处理和辐照PVA的光学带隙和乌尔巴赫能。当PVA暴露于8 × 1017离子/cm2和24 × 1017离子/cm2时，PVA的尾部为1.29 eV，分别为1.59 eV和4.17 eV。此外，计算了未处理和处理样品的折射率、消光系数、电导率和介电常数等参数。此外，还对未辐照膜和处理膜的色散特性进行了评价。随着氢通量从8 × 1017增加到24 × 1017离子/cm2，弛豫时间从2.75 × 10−14秒减少到0.045 × 10−14秒。另一方面，计算了纯聚乙烯醇和经过处理的聚乙烯醇的光磁化率。辐照膜光学特性的改变表明这些膜可以应用于光电子器件等不同的用途。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surface Innovations CHEMISTRY, PHYSICALMATERIALS SCIENCE, COAT-MATERIALS SCIENCE, COATINGS & FILMS

CiteScore

5.80

自引率

22.90%

发文量

期刊介绍： The material innovations on surfaces, combined with understanding and manipulation of physics and chemistry of functional surfaces and coatings, have exploded in the past decade at an incredibly rapid pace. Superhydrophobicity, superhydrophlicity, self-cleaning, self-healing, anti-fouling, anti-bacterial, etc., have become important fundamental topics of surface science research community driven by curiosity of physics, chemistry, and biology of interaction phenomenon at surfaces and their enormous potential in practical applications. Materials having controlled-functionality surfaces and coatings are important to the manufacturing of new products for environmental control, liquid manipulation, nanotechnological advances, biomedical engineering, pharmacy, biotechnology, and many others, and are part of the most promising technological innovations of the twenty-first century.