Light harvesting by a spherical silicon microcavity

被引：14

作者：

Garin, M. ^{[1
]}

Fenollosa, R. ^{[2
]}

Ortega, P. ^{[1
]}

Meseguer, F. ^{[2
]}

机构：

[1] Univ Politecn Cataluna, Dept Engn Elect, Grp Recerca Micro & Nanotecnol, C Jordi Girona 1-3, ES-08034 Barcelona, Spain

[2] Univ Politecn Valencia, CSIC UPV, Inst Tecnol Quim, Av Tarongers S-N, E-46022 Valencia, Spain

来源：

JOURNAL OF APPLIED PHYSICS | 2016年 / 119卷 / 03期

关键词：

MAGNETIC RESPONSE; REGION; COLLOIDS; SUPERABSORPTION; NANOPARTICLES; NANOCAVITIES; ABSORPTION; RESONANCES;

D O I：

10.1063/1.4940047

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Silicon colloids are presented as efficient absorbers in the VIS-NIR region. The theory of resonant absorption by Mie modes in a single high-index sphere is reviewed and engineering rules established. The presented model predicts enhanced absorption in the crystalline silicon band-to-band absorption region, with absorption efficiencies exceeding one in the VIS and excellent NIR response. A maximum resonant absorption efficiency close to 4 can be obtained at the violet region (425nm), and values above 0.25 are possible in the bandgap edge at wavelengths up to 1400 nm. Silicon colloids are proposed as a promising cost-effective, silicon saving, sunlight harvesters with improved VIS and NIR response. (c) 2016 AIP Publishing LLC.

引用

页数：7

共 38 条

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