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Phosphor Based on CsPbBr3 and CdSe/CdZnS Nanocrystals Adapted to Human Twilight Vision
https://doi.org/10.47612/0514-7506-2023-90-1-61-66
Abstract
The possibility has been experimentally shown of obtaining light sources based on commercial blue LEDs and two narrow-band nanocrystalline phosphors (CsPbBr3 and CdSe/CdZnS), which simultaneously satisfy the following criteria: the maximum of the emission spectrum corresponds to the peak of human vision sensitivity at night (505 nm), color coordinates in the CIE 1931 standard are close to the point [0.33; 0.33], the correlated color temperature CCT » 6000 K with the possibility of moving to warmer light with CCT » 4500 K, and the full range of possible colors (gamut) exceeds the norms of the HDTV standard, approaching to the UHDTV standard. It is noted that for serious progress in the development of lighting sources adapted to human night and twilight vision, it is necessary to develop metrological standards and corrected units of brightness and luminous intensity while refusing to use the color rendering index for night and twilight lighting.
About the Authors
O. I. Patsinko
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Minsk
A. A. Ramanenka
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Minsk
V. V. Krukov
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Minsk
L. L. Trotsiuk
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Minsk
O. S. Kulakovich
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Minsk
S. V. Gaponenko
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
Minsk
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Review
For citations:
Patsinko O.I., Ramanenka A.A., Krukov V.V., Trotsiuk L.L., Kulakovich O.S., Gaponenko S.V. Phosphor Based on CsPbBr3 and CdSe/CdZnS Nanocrystals Adapted to Human Twilight Vision. Zhurnal Prikladnoii Spektroskopii. 2023;90(1):61-66. (In Russ.) https://doi.org/10.47612/0514-7506-2023-90-1-61-66
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