TY - JOUR
T1 - Centimeter-Sized Single Crystals of Tetrahedral Manganese (II) Halide Hybrids for Wide-Color Gamut Backlighting Displays
AU - Cheng, Xiaohua
AU - Chang, Xuerui
AU - Lin, Yufan
AU - Lv, Longyun
AU - Cong, Li
AU - Jia, Yuxin
AU - Yin, Jun
AU - Li, Juan
AU - Cui, Bin Bin
N1 - Publisher Copyright:
© 2023 Wiley-VCH GmbH.
PY - 2024/5/2
Y1 - 2024/5/2
N2 - Phosphors with narrow-band green emissions and high photoluminescent quantum efficiency (PLQY) are significantly required for backlighting displays with wider color gamut. In this work, two centimeter-sized manganese (II) halide single crystals TMG2MnCl4 and TMG2MnBr4 (TMG = 1,1,3,3-tetramethylguanidine) are synthesized, exhibiting bright narrow-band green emissions with high PLQYs up to 62% and 90%, respectively. The narrow-band green light emission is located at 520 nm with a full-width at half-maximum (FWHM) of only 57 nm. The photoluminescence mechanisms of two single crystals are elaborated. Two white-light-emitting diodes for backlighting displays (BD-WLEDs) based on them are fabricated, exhibiting the widest color gamut of 122% National Television Standards Committee (NTSC), and a luminous efficacy reached ≈93 lm W−1 with excellent luminescence stability at high temperatures. These properties indicate the potential applications of tetrahedral manganese (II) hybrids in wide-color gamut backlighting displays.
AB - Phosphors with narrow-band green emissions and high photoluminescent quantum efficiency (PLQY) are significantly required for backlighting displays with wider color gamut. In this work, two centimeter-sized manganese (II) halide single crystals TMG2MnCl4 and TMG2MnBr4 (TMG = 1,1,3,3-tetramethylguanidine) are synthesized, exhibiting bright narrow-band green emissions with high PLQYs up to 62% and 90%, respectively. The narrow-band green light emission is located at 520 nm with a full-width at half-maximum (FWHM) of only 57 nm. The photoluminescence mechanisms of two single crystals are elaborated. Two white-light-emitting diodes for backlighting displays (BD-WLEDs) based on them are fabricated, exhibiting the widest color gamut of 122% National Television Standards Committee (NTSC), and a luminous efficacy reached ≈93 lm W−1 with excellent luminescence stability at high temperatures. These properties indicate the potential applications of tetrahedral manganese (II) hybrids in wide-color gamut backlighting displays.
KW - backlighting displays
KW - narrow-band green emissions
KW - tetrahedral manganese (II)
KW - thermal stability
KW - wide-color gamut
UR - http://www.scopus.com/inward/record.url?scp=85179318162&partnerID=8YFLogxK
U2 - 10.1002/smll.202307216
DO - 10.1002/smll.202307216
M3 - Article
AN - SCOPUS:85179318162
SN - 1613-6810
VL - 20
JO - Small
JF - Small
IS - 18
M1 - 2307216
ER -