Experimental analysis of upconversion with both coherent monochromatic irradiation and broad spectrum illumination

被引：59

作者：

Goldschmidt, J. C. ^{[1
]}

Fischer, S. ^{[1
]}

Loeper, P. ^{[1
]}

Kraemer, K. W. ^{[2
]}

Biner, D. ^{[2
]}

Hermle, M. ^{[1
]}

Glunz, S. W. ^{[1
]}

机构：

[1] Fraunhofer Inst Solar Energy Syst, D-79110 Freiburg, Germany

[2] Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2011年 / 95卷 / 07期

关键词：

Silicon solar cell; Upconversion; Quantum efficiency; Broad spectrum illumination; EFFICIENCY SOLAR-CELLS;

D O I：

10.1016/j.solmat.2011.01.019

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Upconversion of sub-band-gap photons promises to increase solar cell efficiencies by making these photons useful. In this paper, we investigate the application of beta-NaYF4:20% Er3+ to silicon solar cells. We determine the external quantum efficiency of an upconverter silicon solar cell, both under monochromatic excitation and, for the first time in the context of silicon solar cells, under broad spectrum illumination as it is relevant for the application to harvest solar energy. The investigated upconverter silicon solar cell responds under broad spectrum illumination with an average upconversion efficiency of 1.07 +/- 0.13% in the spectral range from 1460 to 1600 nm. The resulting efficiency increase for the used solar cell with an overall efficiency of 16.7% is calculated to be 0.014% relative. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1960 / 1963

页数：4

共 15 条

[1] Neodymium-doped fluorochlorozirconate glasses as an upconversion model system for high efficiency solar cells [J].