Down-shifting nanophosphors, method for preparing the same, and luminescent solar concentrator using the same

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United States of America Patent

PATENT NO 11680204
APP PUB NO 20210332293A1
SERIAL NO

17121766

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Abstract

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The present disclosure relates to down-shifting nanophosphors, a method for preparing the same, and a luminescent solar concentrator (LSC) using the same. The down-shifting nanophosphors according to an embodiment of the present disclosure include a core including NaYF4 nanocrystals doped with neodymium (Nd) and ytterbium (Yb), and further include a neodymium (Nd)-doped crystalline shell surrounding the core, or further include a NaYF4 crystalline shell surrounding the crystalline shell. Therefore, the down-shifting nanophosphors efficiently absorb near infrared rays with a wavelength range of 700-900 nm and efficiently emit near infrared rays with a wavelength range of 950-1050 nm. In addition, the down-shifting nanophosphors according to an embodiment of the present disclosure has a size of 60 nm or less, and thus can be applied to manufacture transparent LSC films with ease and can realize transparent solar cell modules having high near infrared ray shifting efficiency.

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Patent Owner(s)

  • KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cho, So Hye Seoul, KR 20 22
Hong, A Ra Seoul, KR 4 2
Jang, Ho Seong Seoul, KR 24 27
Kang, Gumin Seoul, KR 6 0
Ko, Hyungduk Seoul, KR 13 13
Lee, Seung Yong Seoul, KR 122 423

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