Phase Identification of Layered GaS by Polarization-Dependent Angle-Resolved Oblique Incident Second Harmonic Generation

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-03-27 DOI:10.1021/acs.nanolett.5c00345

Ying Song, Hanyu Zhang, Weiheng Zhong, Mingxiu Liu, Weiming Wang, Jiawei Jing, Liujian Qi, Zhilin Gong, Kainan Chang, Rongkuan Leng, Yanchao Wang, Shaojuan Li, Xin-Gang Zhao, Zhong-Ling Lang, Yuwei Shan, Wei Xin, JinLuo Cheng

{"title":"Phase Identification of Layered GaS by Polarization-Dependent Angle-Resolved Oblique Incident Second Harmonic Generation","authors":"Ying Song, Hanyu Zhang, Weiheng Zhong, Mingxiu Liu, Weiming Wang, Jiawei Jing, Liujian Qi, Zhilin Gong, Kainan Chang, Rongkuan Leng, Yanchao Wang, Shaojuan Li, Xin-Gang Zhao, Zhong-Ling Lang, Yuwei Shan, Wei Xin, JinLuo Cheng","doi":"10.1021/acs.nanolett.5c00345","DOIUrl":null,"url":null,"abstract":"Layered gallium sulfide (GaS), a material that has attracted much attention in the field of micro-nano optoelectronics recently, is predicted to have four stable stacking orders (β-, γ-, ε-, and δ-GaS) with close formation energies; β-GaS is the most considered, and other phases are seldom discussed. However, considering the ease of the phase transition in few-layer materials, the lack of accurate crystal phase identification prevents a full understanding of this material for specific applications requiring other crystal phases. Here, we report a novel in situ and nondestructive method to identify the phase of layered GaS by polarization-dependent angle-resolved oblique incident second harmonic generation (SHG). Through this method, we discovered the presence of γ-GaS with a portion of approximately one-sixth of the total samples. Our work has laid a foundation for the application of GaS, and our approach has established a technical guarantee for structural analysis of van der Waals layered materials.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"23 1","pages":""},"PeriodicalIF":9.6000,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Letters","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acs.nanolett.5c00345","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Layered gallium sulfide (GaS), a material that has attracted much attention in the field of micro-nano optoelectronics recently, is predicted to have four stable stacking orders (β-, γ-, ε-, and δ-GaS) with close formation energies; β-GaS is the most considered, and other phases are seldom discussed. However, considering the ease of the phase transition in few-layer materials, the lack of accurate crystal phase identification prevents a full understanding of this material for specific applications requiring other crystal phases. Here, we report a novel in situ and nondestructive method to identify the phase of layered GaS by polarization-dependent angle-resolved oblique incident second harmonic generation (SHG). Through this method, we discovered the presence of γ-GaS with a portion of approximately one-sixth of the total samples. Our work has laid a foundation for the application of GaS, and our approach has established a technical guarantee for structural analysis of van der Waals layered materials.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.