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  • Title: Investigation of energy transfer mechanisms between Bi(2+) and Tm(3+) by time-resolved spectrum.
    Author: Li Y, Sharafudeen K, Dong G, Ma Z, Qiu J.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2013 Nov; 115():305-8. PubMed ID: 23850790.
    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.
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