Indirect near-field absorption mediated by localized surface plasmons

Jesper Jung; Mads L. Trolle; Kjeld Pedersen; Thomas G. Pedersen

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Indirect near-field absorption mediated by localized surface plasmons

机译：局部表面等离子体激元介导的间接近场吸收

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Long wavelength optical absorption in indirect band gap semiconductors usually relies on phonons to fulfill momentum conservation. However, the near-field of a localized surface plasmon on a metal nanoparticle is itself rapidly varying in space and, thereby, contains Fourier components corresponding to large momenta. We analyze to what extent such a near-field can give rise to light absorption for energies below the direct band gap without phonon assistance. The analysis is based on rigorous quantum response functions for transverse and longitudinal wave vectors. We demonstrate that under realistic conditions such nonlocal absorption is small and provide quantitative spectra for metal nanospheres embedded in crystalline silicon (c-Si) which is of potential importance for plasmonic photovoltaics. Our results contradict previous reports and we determine the source of the discrepancy.

机译：间接带隙半导体中的长波长光吸收通常依靠声子来实现动量守恒。但是，金属纳米粒子上的局部表面等离子体激元的近场本身在空间上迅速变化，因此包含对应于大动量的傅立叶分量。我们分析了在没有声子辅助的情况下，这种近场能在多大程度上引起直接带隙以下能量的光吸收。该分析基于对横向和纵向波矢量的严格量子响应函数。我们证明，在现实条件下，此类非局部吸收很小，并为嵌入晶体硅（c-Si）的金属纳米球提供了定量光谱，这对于等离激元光伏具有潜在的重要性。我们的结果与先前的报告相矛盾，我们确定了差异的根源。

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来源
《Physical review》 |2011年第16期|p.165447.1-165447.5|共5页
作者
Jesper Jung; Mads L. Trolle; Kjeld Pedersen; Thomas G. Pedersen;
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作者单位

Department of Physics and Nanotechnology, Aalborg University, Skjernvej 4A, DK-9220 Aalborg Ost, Denmark,Interdisciplinary Nanoscience Center (iNANO), Denmark;

Department of Physics and Nanotechnology, Aalborg University, Skjernvej 4A, DK-9220 Aalborg Ost, Denmark;

Department of Physics and Nanotechnology, Aalborg University, Skjernvej 4A, DK-9220 Aalborg Ost, Denmark,Interdisciplinary Nanoscience Center (iNANO), Denmark;

Department of Physics and Nanotechnology, Aalborg University, Skjernvej 4A, DK-9220 Aalborg Ost, Denmark,Interdisciplinary Nanoscience Center (iNANO), Denmark;

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正文语种 eng
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collective excitations (including excitons, polarons, plasmons and other charge-density excitations); quantum mechanics; wave propagation, transmission and absorption; optical properties of bulk materials and thin films;

机译：集体激发（包括激子;极化子;等离激元和其他电荷密度激发）;量子力学;波传播;传输和吸收;块状材料和薄膜的光学特性;

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1. SCATTERING OF SURFACE-PLASMON POLARITONS BY DIPOLES NEAR A SURFACE - OPTICAL NEAR-FIELD LOCALIZATION [J] . Xiao MF., Siqueiros J., Zayats A. Physical Review, B. Condensed Matter . 1997,第3期

机译：靠近表面的双分子对表面等离子体激元的散射-光学近场定位
2. Localized surface plasmon resonance shift and its application in scanning near-field optical microscopy [J] . Zhang Jiawei, Kolhatkar Gitanjali, Ruediger Andreas Journal of Materials Chemistry, C. materials for optical and electronic devices . 2021,第22期

机译：局部表面等离子体共振移位及其在扫描近场光学显微镜下的应用
3. Near-field analysis of strong coupling between localized surface plasmons and excitons [J] . Fain Nadav, Ellenbogen Tal, Schwartz Tal Physical review . 2019,第23期

机译：局部表面等离子体和激子之间强耦合的近场分析
4. Surface-plasmon mediated near-field light diffraction [C] . Danhong Huang, L. David Wellems Reflection, scattering, and diffraction from surfaces III. . 2012

机译：表面等离子体激元介导的近场光衍射
5. Near-field investigations of localized surface plasmon resonances in gold nanospheres and plasmonic nanoantennas. [D] . Heiberg, Bryan Dale. 2011

机译：金纳米球和等离子体纳米天线中局部表面等离子体共振的近场研究。
6. Near-field surface plasmon field enhancement induced by rippled surfaces [O] . Mario D’Acunto, Francesco Fuso, Ruggero Micheletto, 2017

机译：波纹表面引起的近场表面等离子体激元场增强
7. Near-field interactions between metal nanoparticle surface plasmons and molecular excitons in thin-films: part I: absorption [O] . Niesen Bjoern, Rand Barry P, Van Dorpe Pol, 2012

机译：金属纳米粒子表面等离子体与薄膜中分子激子之间的近场相互作用：第一部分：吸收
8. Localized Surface Plasmon Resonance of Metal Nanodot Nanowire Arrays Studied by Far-Field and Near-Field Optical. [R] . Lin, H. 2007

机译：金属纳米点纳米线阵列的局域表面等离子体共振研究远场和近场光学。

Indirect near-field absorption mediated by localized surface plasmons

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