Premium
Neodymium‐doped fluorochlorozirconate glasses as an upconversion model system for high efficiency solar cells
Author(s) -
Ahrens Bernd,
Löper Philipp,
Goldschmidt Jan Christoph,
Glunz Stefan,
Henke Bastian,
Miclea PaulTiberiu,
Schweizer Stefan
Publication year - 2008
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200880452
Subject(s) - photon upconversion , materials science , doping , neodymium , quantum efficiency , silicon , erbium , optoelectronics , ion , fluorescence , optics , chemistry , laser , physics , organic chemistry
Thermal processing of as‐made fluorozirconate glasses which were additionally doped with neodymium and chlorine ions leads to enhanced upconversion fluorescence intensities. The samples were annealed between 240 °C and 290 °C and the optimum value of upconversion intensity was found for the 270 °C sample. The development of glasses doped with Er, whose luminescence characteristics make it a better choice for application as an upconversion layer on silicon solar cells, is in progress. In addition, we present external quantum efficiency measurements of a silicon solar cell with a NaYF 4 :Er 3+ upconverter. We also show a theoretical analysis where erbium transitions can be enhanced selectively to increase upconversion efficiency. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)