NDLI: Broadband ultraviolet to near infrared conversion in Eu2+,Nd3+ co-doped SrAl2O4

Content Provider	Semantic Scholar
Author	Tai, Yuping Pan, Bingli Li, Xinzhong Nie, Zhaogang Du, Xigang Yuan, Guanghui
Copyright Year	2018
Abstract	In this study, we investigated the quantum cutting (QC) mechanism in Eu2+–Nd3-co-doped SrAl2O4 microcrystals by fluorescence spectroscopy and decay lifetime analysis. In this material, the near-infrared (NIR) emissions of Nd3+ in the range of 800–1200 nm were enhanced under the excitation of the Eu2+:4f7 → 4f65d1 transition radiation. The lifetime of the 5d1 level of Eu2+ decreased with the increase in the Nd3+ concentration. These results verified the occurrence of cooperative energy transfer (CET) from the Eu2+:5d1 excited state to the Nd3+:4F3/2 level, by which one absorbed ultraviolet-visible photon was converted to two NIR photons with an optimal quantum efficiency (QE) of approximately 177.1%. Therefore, this broadband QC material paves the way for a further increase in the conversion efficiency of c-Si solar cells.
Starting Page	37396
Ending Page	37400
Page Count	5
File Format	PDF HTM / HTML
DOI	10.1039/C8RA07898J
Alternate Webpage(s)	https://pubs.rsc.org/en/content/articlepdf/2018/ra/c8ra07898j
Alternate Webpage(s)	https://doi.org/10.1039/C8RA07898J
Volume Number	8
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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