Optical properties of down-shifting barium borate glass for CdTe solar cells

被引：14

作者：

Loos, Sebastian ^{[1
]}

Steudel, Franziska ^{[2
]}

Ahrens, Bernd ^{[1
,2
]}

Schweizer, Stefan ^{[1
,2
]}

机构：

[1] South Westphalia Univ Appl Sci, Dept Elect Engn, D-59494 Soest, Germany

[2] Fraunhofer Inst Mech Mat IWM, Branch Lab, Fraunhofer Applicat Ctr Inorgan Phosphors, D-59494 Soest, Germany

来源：

OPTICAL MATERIALS | 2015年 / 41卷

关键词：

Down-shifting; Borate glass; Rare-earth ion doping; CdTe solar cell;

D O I：

10.1016/j.optmat.2014.09.039

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

CdTe thin film solar cells have a poor response in the ultraviolet and blue spectral range, mainly due to absorption and thermalization losses in the CdS buffer layer. To overcome this efficiency drop in the short wavelength range trivalent rare-earth doped barium borate glass is investigated for its potential as frequency down-shifting cover glass on top of the cell. The glass is doped with either Tb3+ or Eu3+ up to a level of 2.5 at.% leading to strong absorption in the ultraviolet/blue spectral range. Tb3+ shows intense emission bands in the green spectral range while Eu3+ emits in the orange/red spectral range. Based on rare-earth absorption and luminescence quantum efficiency the possible gain in short-circuit current density is calculated. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：143 / 145

页数：3

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