Synthesis and photoluminescence studies of Na3−3xLnxSbO (PO4)2 (Ln = Eu, Sm and Tb, and 0 ≤ x ≤ 0.1 mol%) phosphors for white light-emitting diodes

Dy3+‐ and/or Sm3+‐doped glass–ceramics containing NaGd(MoO4)2 crystalline phase for warm white light applications

“…The light source can be categorized into warm white light and cool white light based on their CCT value, with 5000 K being the threshold. Light sources with a CCT value below 5000 K are considered warm white light and are commonly used in home scenes 104–107 . On the other hand, light sources with a CCT value above 5000 K are classified as cool white light and are typically found in commercial settings 104–107 .…”

“…Light sources with a CCT value below 5000 K are considered warm white light and are commonly used in home scenes 104–107 . On the other hand, light sources with a CCT value above 5000 K are classified as cool white light and are typically found in commercial settings 104–107 . Thus, the glass–ceramics containing Dy 2 O 3 –Sm 2 O 3 can potentially be used for warm white household lighting because they have a CCT lower than 5000 K.…”

“…The dominant wavelength can be determined by drawing a straight line connecting the chromaticity coordinates ( x, y ) of the sample and the coordinates of the CIE 1931 standard source C light source ( x i = 0.3101, y i = 0.3162) 105,108 . The coordinates ( x d , y d ) where this line extends and intersects with the spectral trajectory of the CIE chromaticity diagram represent the dominant wavelength.…”

“…[104][105][106][107] On the other hand, light sources with a CCT value above 5000 K are classified as cool white light and are typically found in commercial settings. [104][105][106][107] Thus, the glass-ceramics containing Dy 2 O 3 -Sm 2 O 3 can potentially be used for warm white household lighting because they have a CCT lower than 5000 K. The dominant wavelength can be determined by drawing a straight line connecting the chromaticity coordinates (x, y) of the sample and the coordinates of the CIE 1931 standard source C light source (x i = 0.3101, y i = 0.3162). 105,108 The coordinates (x d , y d ) where this line extends and intersects with the spectral trajectory of the CIE chromaticity diagram represent the dominant wavelength.…”

“…Light sources with a CCT value below 5000 K are considered warm white light and are commonly used in home scenes. [104][105][106][107] On the other hand, light sources with a CCT value above 5000 K are classified as cool white light and are typically found in commercial settings. [104][105][106][107] Thus, the glass-ceramics containing Dy 2 O 3 -Sm 2 O 3 can potentially be used for warm white household lighting because they have a CCT lower than 5000 K. The dominant wavelength can be determined by drawing a straight line connecting the chromaticity coordinates (x, y) of the sample and the coordinates of the CIE 1931 standard source C light source (x i = 0.3101, y i = 0.3162).…”