TY - JOUR
T1 - Novel ultra-high-temperature zero-thermal quenching plant-protecting type blue-green dual-emission KAl11O17:Eu2+,Mn2+ phosphors for urban ecological lighting
AU - Zhu, Haifeng
AU - Huang, Xu
AU - Li, Ya Nan
AU - She, Ya Lan
AU - Wang, Jing
AU - Wong, Wai Yeung
AU - Liu, Min
AU - Li, Wei
AU - Zhou, Zhi
AU - Xia, Mao
N1 - Funding Information:
The authors would like to gratefully acknowledge funds from the National Natural Science Foundation of China (Grant No. 51974123), the Distinguished Youth Foundation of Hunan Province (Grant No. 2020JJ2018), the Key R & D projects in Hunan Province (2020WK2016, 2020SK2032, 2021SK2047, 2022NK2044), the Natural Sciences Foundation of Hunan Province, China (Grant No. 2021JJ40261), the Hunan High Level Talent Gathering Project (2019RS1077&2020RC5007), the Scientific Research Fund of Hunan Provincial Education Department (19C0903), the Natural Sciences Foundation of Hunan Agricultural University, China (Grant No. 19QN11), Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Resource Utilization Science Foundation (19KFXM12).
Publisher Copyright:
© 2022 The Royal Society of Chemistry
PY - 2022/1/22
Y1 - 2022/1/22
N2 - Urban vegetation is an important stabilizer of urban ecological balance. The current urban lighting system destroys the growing habits of plants and causes the regression of urban vegetation groups owing to the redundant blue light, which also leads to huge economic losses. To solve this problem, novel plant-protecting type blue-green dual-emission phosphors KAl11O17:Eu2+,Mn2+ (KAlO:Eu2+,Mn2+), meeting the lighting requirements of plants, are reported. Compared to commercial phosphors, the blue light in our phosphor is greatly reduced through an energy transfer pathway that is far below the plant absorption curve. In addition, white LED devices fabricated with KAl11O17:Eu2+,Mn2+ phosphors show an excellent white emission with CIE coordinates of (0.324, 0.336). Moreover, thanks to its intrinsic defect energy level, this material achieves zero-thermal quenching above 295 °C. The superior photoluminescent properties endow this novel phosphor with bright potential to be applied as a white light source in urban ecological lighting systems in the future.
AB - Urban vegetation is an important stabilizer of urban ecological balance. The current urban lighting system destroys the growing habits of plants and causes the regression of urban vegetation groups owing to the redundant blue light, which also leads to huge economic losses. To solve this problem, novel plant-protecting type blue-green dual-emission phosphors KAl11O17:Eu2+,Mn2+ (KAlO:Eu2+,Mn2+), meeting the lighting requirements of plants, are reported. Compared to commercial phosphors, the blue light in our phosphor is greatly reduced through an energy transfer pathway that is far below the plant absorption curve. In addition, white LED devices fabricated with KAl11O17:Eu2+,Mn2+ phosphors show an excellent white emission with CIE coordinates of (0.324, 0.336). Moreover, thanks to its intrinsic defect energy level, this material achieves zero-thermal quenching above 295 °C. The superior photoluminescent properties endow this novel phosphor with bright potential to be applied as a white light source in urban ecological lighting systems in the future.
UR - http://www.scopus.com/inward/record.url?scp=85127926164&partnerID=8YFLogxK
U2 - 10.1039/d1tc04890b
DO - 10.1039/d1tc04890b
M3 - Journal article
AN - SCOPUS:85127926164
SN - 2050-7526
VL - 10
SP - 3461
EP - 3471
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 9
ER -