A discussion on spectral modification from visible to near-infrared based on energy transfer for silicon solar cells

Publisher:
Elsevier
Publication Type:
Journal Article
Citation:
Optical Materials, 2012, 34 (5), pp. 901 - 905
Issue Date:
2012-03
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We report on spectral modification from visible to near-infrared (NIR) in Pr3+ and Yb3+ codoped oxyfluoride glass for c-Si solar cell. The excitation and emission spectra indicate the energy transfer from Pr3+ to Yb3+. The theoretical quantum efficiency is calculated based on the fluorescent lifetime and has reached more than 150%. However, the external quantum efficiency (EQE) of the Pr3+ and Yb3+ codoped glass covered on silicon solar cell is decreased compared to that of the host glass. The reasons of the negative effect of spectral modification on EQE are discussed and analyzed.
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