Investigations on the structural modifications of MEH-PPV films induced by high energy electron beam irradiation

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-09-29 DOI:10.1016/j.radphyschem.2025.113341

Nishant Chaudhary , Vibha Saxena , Mainak Roy , Jyoti Sharma , Ajay Singh , R.B. Chavan

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Abstract

Electron beam induced modification of surface characteristics of conducting polymer films has been attempted with the aim of exploring potential applications in the fields of photovoltaics and radiation dosimetry. Poly [2-methoxy-5 (2ˊ-ethyl hexyloxy)-1, 4- phenylene vinylene] (MEH-PPV) films were cast on flexible biaxially oriented polyethylene teraphalate (BOPET) sheets and were irradiated with electron beam of 10 MeV, generated by RF linear accelerator, in steps up to 100 kGy. Spectroscopic investigations, using a host of techniques such as photoluminescence, UV–visible spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) spectroscopy revealed that electron beam irradiation has initially resulted in the loss of planarity and reduction in conjugation length of the polymer chain, which however seems to have recovered at higher dose of irradiation. The impact of such structural modification in polymer films, induced by electron beam treatment, is discussed in the context of their possible photovoltaic and dosimetry application.

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高能电子束辐照诱导MEH-PPV薄膜结构改性的研究

电子束诱导改性导电聚合物薄膜的表面特性已被尝试，目的是探索其在光电和辐射剂量学领域的潜在应用。将聚[2-甲氧基-5（2 -羟乙基己氧基）- 1,4 -苯基乙烯烯]（MEH-PPV）薄膜投射在柔性双轴取向聚乙烯teraphalate （BOPET）薄片上，用RF直线加速器产生的10 MeV电子束辐照，辐照速度高达100 kGy。光谱学研究，使用一系列技术，如光致发光、紫外可见光谱、拉曼光谱、x射线光电子能谱（XPS）和电子顺磁共振（EPR）光谱显示，电子束辐照最初导致聚合物链的平面度损失和共轭长度减少，然而，在更高剂量的辐照下，这种现象似乎已经恢复。本文讨论了电子束处理对聚合物薄膜结构改变的影响，以及它们在光伏和剂量学方面的应用前景。

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.