Disentangling the Temporal Dynamics of Nonthermal Electrons in Photoexcited Gold Nanostructures
文献类型：期刊论文
| 作者 | O'Keeffe, Patrick; Catone, Daniele; Di Mario, Lorenzo; Toschi, Francesco; Magnozzi, Michele; Bisio, Francesco; Alabastri, Alessandro; Proietti Zaccaria, Remo; Toma, Andrea; Della Valle, Giuseppe |
| 刊名 | LASER & PHOTONICS REVIEWS
 |
| 出版日期 | 2021 |
| 卷号 | 15期号:6 |
| 英文摘要 | The study of nonthermal electrons, generated upon photoexcitation of plasmonic nanostructures, plays a key role in a variety of contexts, from photocatalysis and energy conversion to photodetection and nonlinear optics. Their ultrafast relaxation and subsequent release of energy to a low energy distribution of thermalized hot electrons has been the subject of a myriad of papers, mostly based on femtosecond transient absorption spectroscopy (FTAS). However, the FTAS signal stems from a complex interplay of different contributions arising from both nonthermal and thermal electrons, making the disentanglement of the two a very challenging task, so far accomplished only in terms of numerical simulations. Here a combined approach is introduced, based on a post-processing of the FTAS measurements guided by a reduced semiclassical model, the so-called extended two-temperature model, which has allowed the purely nonthermal contribution to the pump-probe experimental map recorded for 2D arrays of gold nanoellipsoids to be isolated. This approach displays the intimate correlation between electron energy and probe photon energy on the ultrafast time-scale of electron thermalization. It also sheds new light on the ultrafast transient optical response of gold nanostructures, and will help the development of optimized plasmonic configurations for nonthermal electrons generation and harvesting. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22006]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Della Valle, G (corresponding author), Politecn Milan, Dipto Fis, Piazza L da Vinci 32, I-20133 Milan, Italy. 2.Paladini, A (corresponding author), CNR, ISM, EuroFEL Support Lab EFSL, Ist Struttura Mat, I-00015 Monterotondo, Italy. 3.Della Valle, G (corresponding author), CNR, IFN, Ist Foton & Nanotecnol, Piazza L da Vinci 32, I-20133 Milan, Italy. |
| 推荐引用方式 GB/T 7714 | O'Keeffe, Patrick,Catone, Daniele,Di Mario, Lorenzo,et al. Disentangling the Temporal Dynamics of Nonthermal Electrons in Photoexcited Gold Nanostructures[J]. LASER & PHOTONICS REVIEWS,2021,15(6). |
| APA | O'Keeffe, Patrick.,Catone, Daniele.,Di Mario, Lorenzo.,Toschi, Francesco.,Magnozzi, Michele.,...&Paladini, Alessandra.(2021).Disentangling the Temporal Dynamics of Nonthermal Electrons in Photoexcited Gold Nanostructures.LASER & PHOTONICS REVIEWS,15(6). |
| MLA | O'Keeffe, Patrick,et al."Disentangling the Temporal Dynamics of Nonthermal Electrons in Photoexcited Gold Nanostructures".LASER & PHOTONICS REVIEWS 15.6(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。