一种紫外无氢纯硒酸盐非线性光学材料,通过框架优化结构转换实现平衡特性

IF 10.7 2区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Peng-Fei Li, Chun-Li Hu, Jiang-Gao Mao and Fang Kong
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引用次数: 0

摘要

对于紫外(UV)非线性光学(NLO)应用的非中心对称(NCS)氧化物而言,由于其固有的不兼容性,实现宽带隙、大二次谐波发生(SHG)强度和足够的双折射以满足相位匹配是一项重大挑战。为解决这一问题,本研究提出了一种称为框架优化结构转换的策略。以中心对称(CS)NaGa(SeO3)2 为基础,成功合成了一种原始的紫外硒酸盐 NLO 材料 NaLu(SeO3)2。得到的 NaLu(SeO3)2 具有均衡的综合性能,包括带隙(5.3 eV)、SHG 响应(2.7 × KDP)、紫外截止边(210 nm)、激光诱导损伤阈值(LIDT)(151.69 MW/cm2)、双折射(Cal:0.138@546 nm,Exp:0.153@546 nm)、热稳定性(~575 °C)和环境稳定性。值得注意的是,在紫外非纯氢硒酸盐材料中,它的SHG效应、带隙、LIDT和双折射都是最大的。这种进步可归功于通过优化母体化合物框架上的阳离子,成功地排列了 SeO3 基团。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A UV non-hydrogen pure selenite nonlinear optical material for achieving balanced properties through framework-optimized structural transformation†

A UV non-hydrogen pure selenite nonlinear optical material for achieving balanced properties through framework-optimized structural transformation†

For non-centrosymmetric (NCS) oxides intended for ultraviolet (UV) nonlinear optical (NLO) applications, achieving a wide band gap, large second harmonic generation (SHG) intensity, and sufficient birefringence to satisfy phase matching is a significant challenge due to their inherent incompatibility. To address this issue, this study proposes a strategy called framework-optimized structural transformation. Building upon centrosymmetric (CS) NaGa(SeO3)2 as a foundation, an original UV selenite NLO material, NaLu(SeO3)2, was successfully synthesized. The derived NaLu(SeO3)2 exhibits a balanced comprehensive performance, including a band gap (5.3 eV), an SHG response (2.7 × KDP), a UV cut-off edge (210 nm), a laser-induced damage threshold (LIDT) (151.69 MW cm−2), birefringence (Cal: 0.138@546 nm, Exp: 0.153@546 nm), thermal stability (∼575 °C) and environmental stability. Notably, its SHG effect, band gap, LIDT, and birefringence are all the largest among UV non-hydrogen pure selenite materials. Such progress can be attributed to the successful arrangement of the SeO3 groups by optimizing the cations on the framework of the parent compound.

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来源期刊
Materials Horizons
Materials Horizons CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
18.90
自引率
2.30%
发文量
306
审稿时长
1.3 months
期刊介绍: Materials Horizons is a leading journal in materials science that focuses on publishing exceptionally high-quality and innovative research. The journal prioritizes original research that introduces new concepts or ways of thinking, rather than solely reporting technological advancements. However, groundbreaking articles featuring record-breaking material performance may also be published. To be considered for publication, the work must be of significant interest to our community-spanning readership. Starting from 2021, all articles published in Materials Horizons will be indexed in MEDLINE©. The journal publishes various types of articles, including Communications, Reviews, Opinion pieces, Focus articles, and Comments. It serves as a core journal for researchers from academia, government, and industry across all areas of materials research. Materials Horizons is a Transformative Journal and compliant with Plan S. It has an impact factor of 13.3 and is indexed in MEDLINE.
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