纳秒级和纳米级热效应的光子原子探针研究。

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-05-14 DOI:10.1021/acs.nanolett.5c01289

Subodh K Gautam,Samba Ndiaye,Jonathan Houard,Denis Lefebvre,Jean-Michel Chauveau,Maxime Hugues,Angela Vella,Lorenzo Rigutti

{"title":"纳秒级和纳米级热效应的光子原子探针研究。","authors":"Subodh K Gautam,Samba Ndiaye,Jonathan Houard,Denis Lefebvre,Jean-Michel Chauveau,Maxime Hugues,Angela Vella,Lorenzo Rigutti","doi":"10.1021/acs.nanolett.5c01289","DOIUrl":null,"url":null,"abstract":"The thermal effect of a subpicosecond laser pulse impinging on a nanoscale semiconductor structure is evaluated by analyzing the photoluminescence (PL) from samples characterized in situ by atom probe tomography. By examining time-resolved PL and ion time-of-flight spectra, we establish the correct time scale of transient processes─carrier recombination and carrier-phonon scattering─following a laser pulse. This approach allows for analysis of peak energies and bandwidths from temperature- and laser intensity-dependent PL spectra, enabling the estimation of an effective temperature within a few hundred picoseconds after the laser pulse. The analysis was conducted on ZnO/(Mg,Zn)O quantum well heterostructures, where the results can be readily interpreted using ZnO's specific heat capacity and its temperature dependence.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"58 1","pages":""},"PeriodicalIF":9.1000,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Photonic Atom Probe Study of Thermal Effects at the Nanosecond and Nanometer scale.\",\"authors\":\"Subodh K Gautam,Samba Ndiaye,Jonathan Houard,Denis Lefebvre,Jean-Michel Chauveau,Maxime Hugues,Angela Vella,Lorenzo Rigutti\",\"doi\":\"10.1021/acs.nanolett.5c01289\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The thermal effect of a subpicosecond laser pulse impinging on a nanoscale semiconductor structure is evaluated by analyzing the photoluminescence (PL) from samples characterized in situ by atom probe tomography. By examining time-resolved PL and ion time-of-flight spectra, we establish the correct time scale of transient processes─carrier recombination and carrier-phonon scattering─following a laser pulse. This approach allows for analysis of peak energies and bandwidths from temperature- and laser intensity-dependent PL spectra, enabling the estimation of an effective temperature within a few hundred picoseconds after the laser pulse. The analysis was conducted on ZnO/(Mg,Zn)O quantum well heterostructures, where the results can be readily interpreted using ZnO's specific heat capacity and its temperature dependence.\",\"PeriodicalId\":53,\"journal\":{\"name\":\"Nano Letters\",\"volume\":\"58 1\",\"pages\":\"\"},\"PeriodicalIF\":9.1000,\"publicationDate\":\"2025-05-14\",\"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.5c01289\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Letters","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acs.nanolett.5c01289","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

摘要

利用原子探针层析成像技术分析了亚皮秒激光脉冲撞击纳米级半导体结构时的光致发光效应。通过检查时间分辨PL和离子飞行时间光谱，我们建立了激光脉冲后瞬态过程─载流子复合和载流子-声子散射─的正确时间尺度。这种方法可以从温度和激光强度相关的PL光谱中分析峰值能量和带宽，从而在激光脉冲后几百皮秒内估计有效温度。对ZnO/(Mg,Zn)O量子阱异质结构进行了分析，结果可以很容易地用ZnO的比热容及其温度依赖性来解释。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

A Photonic Atom Probe Study of Thermal Effects at the Nanosecond and Nanometer scale.

The thermal effect of a subpicosecond laser pulse impinging on a nanoscale semiconductor structure is evaluated by analyzing the photoluminescence (PL) from samples characterized in situ by atom probe tomography. By examining time-resolved PL and ion time-of-flight spectra, we establish the correct time scale of transient processes─carrier recombination and carrier-phonon scattering─following a laser pulse. This approach allows for analysis of peak energies and bandwidths from temperature- and laser intensity-dependent PL spectra, enabling the estimation of an effective temperature within a few hundred picoseconds after the laser pulse. The analysis was conducted on ZnO/(Mg,Zn)O quantum well heterostructures, where the results can be readily interpreted using ZnO's specific heat capacity and its temperature dependence.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

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.