Extraction and analysis of temperature-induced intrinsic absorption changes in the charge transfer band of YVO4

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-09-08 DOI:10.1016/j.jlumin.2025.121519

Lixin Peng , Zhoulin Ding , Zhiguo Zhang

引用次数: 0

Abstract

The real temperature-dependent variation in the absorption of the charge transfer band (CTB) is obscured due to its presence in the photoluminescence excitation (PLE) spectrum. To address this, a method based on the steady-state rate equation was developed to extract the intrinsic absorption of the CTB. The temperature-dependent absorption spectra of CTB in VO₄³⁻ groups were obtained by analyzing temperature-dependent photoluminescence (PL) spectra, PLE spectra, time-resolved spectra of YVO₄, and the spectrum of a xenon (Xe) lamp. The results reveal that, in contrast to the changes in the PLE spectra of YVO₄, the absorption of CTB increases with temperature in the absorption spectra, and the total absorption change of CTB with temperature in YVO₄ follows the Boltzmann distribution law. This work offers a new optical framework for CTB absorption analysis, potentially supporting the design of temperature-sensitive optical materials and devices.

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YVO4电荷转移带温度诱导本征吸收变化的提取与分析

由于电荷转移带（CTB）存在于光致发光激发（PLE）光谱中，其吸收的实际温度依赖变化被掩盖了。为了解决这一问题，提出了一种基于稳态速率方程的方法来提取CTB的本征吸收。通过分析YVO4的温度依赖性光致发光（PL）光谱、PLE光谱、时间分辨光谱和氙（Xe）灯的光谱，得到了CTB在VO43−基团中的温度依赖性吸收光谱。结果表明，与YVO4的PLE光谱变化相反，吸收光谱中CTB的吸收随温度的升高而增加，并且YVO4中CTB的总吸收随温度的变化遵循玻尔兹曼分布规律。这项工作为CTB吸收分析提供了一个新的光学框架，可能支持温度敏感光学材料和器件的设计。

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

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.