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Spectrochim Acta A Mol Biomol Spectrosc. 2013 Nov;115:305-8. doi: 10.1016/j.saa.2013.05.065. Epub 2013 Jun 11.

Investigation of energy transfer mechanisms between Bi(2+) and Tm(3+) by time-resolved spectrum.

Author information

1
Institute of Optical Communication Materials and State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.

Abstract

Here, we report for the first time the optical properties of Bi(2+) and Tm(3+) co-doped germanate glasses and elucidate the potential of this material as substrates to improve the performance of CdTe solar cell. A strong emission peak at 800nm is observed under the excitation of 450-700nm in this material. The energy transfer processes from the transitions of Bi(2+) [(2)P3/2(1)→(2)P1/2]: Tm(3+) [(3)H6→(3)H4] are investigated by time-resolved luminescence spectroscopy. A cover glass exhibiting an ultra-broadband response spectrum covering the entire solar visible wavelength region is suggested to enhance the conversion efficiency of CdTe solar cells significantly.

KEYWORDS:

Bi(2+); CdTe solar cell; Energy transfer; Luminescence down-shifting; Time-resolved

PMID:
23850790
DOI:
10.1016/j.saa.2013.05.065
[Indexed for MEDLINE]
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