Stokes and anti-Stokes emission characteristics of Er3+/Yb3+ co-doped zinc tellurite glasses under 377 and 1550 nm excitations for solar energy conversion application

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2024-10-18 DOI:10.1016/j.jlumin.2024.120948

Keenatampalle Suresh , C.R. Kesavulu , C.J. Deviprasad , Wisanu Pecharapa , Upendra Kumar Kagola , Th Tröster , C.K. Jayasankar

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引用次数: 0

Abstract

One of the best rare earth combinations for down- and up-converting the solar photons is Er³⁺/Yb³⁺. Therefore, at present, by using the traditional melt quench technique, zinc tellurite glasses doped with Er³⁺ and Er³⁺/Yb³⁺ were characterised. Several methods of down-conversion that result in the emission of 1000 nm from the acceptor (Yb³⁺) under excitation of donor (Er³⁺) were studied. On the other hand, the impact of acceptor (Yb³⁺) concentration and excitation pump power on the excited state absorption and its influence on the up-conversion emission (1000 nm) properties were investigated in detail under 1535 nm excitation. The studies on emission and decay results are discovered to be very significant. Suggesting that these glasses when used as conversion layers, can append the conversion efficiency of Si-based solar cells.

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用于太阳能转换的 Er3+/Yb3+ 共掺杂锌碲玻璃在 377 和 1550 纳米激发下的斯托克斯和反斯托克斯发射特性

Er3+/Yb3+ 是向下和向上转换太阳光子的最佳稀土组合之一。因此，目前采用传统的熔淬技术，对掺杂 Er3+ 和 Er3+/Yb3+ 的碲锌玻璃进行了表征。研究了在供体（Er3+）激发下导致受体（Yb3+）发射 1000 纳米光的几种下转换方法。另一方面，在 1535 纳米的激发下，详细研究了受体（Yb3+）浓度和激发泵功率对激发态吸收的影响及其对上转换发射（1000 纳米）特性的影响。研究发现，发射和衰变结果非常显著。这表明这些玻璃用作转换层时，可以提高硅基太阳能电池的转换效率。

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.