首页> 外文会议>Photonics for solar energy systems III >Calculation of up-conversion photoluminescence in Er~(3+) ions near noble-metal nanoparticles

【24h】

Calculation of up-conversion photoluminescence in Er~(3+) ions near noble-metal nanoparticles

机译：贵金属纳米粒子附近Er〜（3+）离子上转换光致发光的计算

获取原文

获取原文并翻译 | 示例

页面导航

摘要
著录项
相似文献
相关主题

摘要

In conventional silicon solar cells, photons with energies lower than the silicon band gap (1.12 eV) are not absorbed in the silicon layer. However, the near-infrared portion of the solar spectrum may still be able to contribute to photocurrent generation if use can be made of up-conversion processes that transform two or more infrared photons into a photon of sufficient energy to be absorbed in silicon. One possible material in which up-conversion processes occur are rare-earth ions such as Er~(3+). It has recently been shown that up-conversion in such ions could be enhanced by optical near-field coupling to metal nanoparticles in a highly controlled geometry. However, potential photovoltaic applications of the up-conversion enhancement will certainly be characterized by different geometric arrangements, with random distances between ions and nanoparticles. Whether or not an overall enhancement of the up-conversion efficiency may be expected under such realistic conditions is an open question. In this work, we address an important aspect of this question, namely the particle-induced enhancement of the optical excitation rate in the rare-earth ions. Our model calculations show that the excitation rate in Er~(3+) ions can be enhanced using spherical gold nanoparticles. The model includes random distances between ions and nanoparticles, as well as random polarizations of the exciting light. The enhancement of the rate of excitation of the fundamental transition results in increases of the up-conversion rate by up to 20% for an excitation wavelength of 1523 nm, provided that photoluminescence-quenching effects due to nonradiative relaxation in the metal can be neglected.

机译：在常规的硅太阳能电池中，能量低于硅带隙（1.12 eV）的光子不会被吸收到硅层中。但是，如果可以使用向上转换过程将两个或多个红外光子转换为具有足够能量以吸收到硅中的光子，则太阳光谱的近红外部分仍可能有助于光电流的产生。发生上转换过程的一种可能材料是稀土离子，例如Er〜（3+）。最近已经显示，可以通过在高度受控的几何结构中通过与金属纳米颗粒的光学近场耦合来增强此类离子的上转换。但是，上转换增强的潜在光伏应用无疑将以不同的几何排列为特征，离子与纳米粒子之间的距离随机。在这样现实的条件下是否可以期望整体上转换效率得到提高是一个悬而未决的问题。在这项工作中，我们解决了这个问题的一个重要方面，即稀土离子中粒子引起的光激发速率的增强。我们的模型计算表明，使用球形金纳米颗粒可以提高Er〜（3+）离子的激发速率。该模型包括离子与纳米粒子之间的随机距离，以及激发光的随机极化。如果可以忽略由于金属中非辐射弛豫引起的光致发光猝灭效应，则对于1523 nm的激发波长，基本跃迁激发速率的提高会导致上转换速率提高多达20％。

著录项

来源
《Photonics for solar energy systems III》|2010年|P.77250Y.1-77250Y.8|共8页
会议地点 Brussels(BE)
作者
Florian Hallermann; Jan Christoph Goldschmidt; Stefan Fischer; Philipp Loeper; Gero von Plessen;
展开▼
作者单位

Institute of Physics (1 A), RWTH Aachen University, 52056 Aachen, Germany;

Fraunhofer Institute for Solar Energy Systems, Heidenhofstr. 2, 79110 Freiburg, Germany;

rnFraunhofer Institute for Solar Energy Systems, Heidenhofstr. 2, 79110 Freiburg, Germany;

rnFraunhofer Institute for Solar Energy Systems, Heidenhofstr. 2, 79110 Freiburg, Germany;

rnInstitute of Physics (1 A), RWTH Aachen University, 52056 Aachen, Germany;

展开▼
会议组织
原文格式 PDF
正文语种 eng
中图分类应用光学;太阳能技术;
关键词

相似文献

外文文献
中文文献
专利

1. Synthesis and up-conversion photoluminescence properties of NaYF_4:Yb~(3+), Er~(3+)@sSiO_2@mSiO_2 nanoparticles [J] . Peng Liu, Guohong Zhou, Shi Chen, Optical Materials . 2014,第8期

机译：NaYF_4：Yb〜（3+），Er〜（3 +）@ sSiO_2 @ mSiO_2纳米粒子的合成及上转换光致发光性能
2. Up-conversion photoluminescence characteristics of Yb~(3+): Er~(3+):Tm~(3+) co-doped borosilicate glasses [J] . Li Cheng-Ren, Xu Wei, Dong Bin, 中国物理：英文版 . 2010,第004期
3. Structure Evolution and Up-Conversion Studies of ZnX_2O_4:Er~(3+)/Yb~(3+) (X = Al~(3+), Ga~(3+), In~(3+)) Nanoparticles [J] . Rafal J. Wiglusz, Adam Watras, Malgorzata Malecka, European journal of inorganic chemistry . 2014,第6期

机译：ZnX_2O_4：Er〜（3 +）/ Yb〜（3+）（X = Al〜（3+），Ga〜（3+），In〜（3+））纳米粒子的结构演化和上转换研究
4. Calculation of up-conversion photoluminescencein Er~(3+) ions near noble-metal nanoparticles [C] . Florian Hallermann, Jan Chfistoph Goldschmidt, Stefan Fischer, SPIE Conference on Photonics for Solar Energy Systems . 2010

机译：贵金属纳米颗粒附近的上转化光致荧光素ER〜（3+）离子的计算
5. Applications of a three-body potential model and crystal field calculations to the simulation of europium(3+), erbium(3+) and ytterbium(3+) environments on lead silicate glass [D] . Peres, Tania 1999

机译：三体电势模型和晶体场计算在硅酸铅玻璃上（（3+），（3+）和（3+）环境模拟中的应用
6. Color-tunable up-conversion emission in Y2O3:Yb3+ Er3+ nanoparticles prepared by polymer complex solution method [O] . Vesna M Lojpur, Phillip S Ahrenkiel, Miroslav D Dramićanin 2013

机译：高分子络合溶液法制备的Y2O3：Yb3 +Er3 +纳米粒子的颜色可调上转换发射
7. Combustion synthesis and up-conversion luminescence of La₂O₂S:Er³⁺,Yb³⁺ nanophosphors [O] . Hakmeh, Noha, Chlique, Christophe, Merdrignac-Conanec, Odile, 2015

机译：La _{2 O _{2 S：Er ^{3 + ，Yb ^{3 + 纳米磷的燃烧合成及上转换发光}}}}
8. Theoretical Free-Ion Energies,Derivatives and Reduced Matrix Elements I. Pr(3+),Tm(3+),Nd(3+),and Er(3+). [R] . morrison,clyde a. karayianis,nick 1977

机译：理论自由离子能量，衍生物和还原的基质元素I. pr（3 +），Tm（3 +），Nd（3 +）和Er（3+）。

Calculation of up-conversion photoluminescence in Er~(3+) ions near noble-metal nanoparticles

摘要

著录项

相似文献

相关主题

期刊订阅