Thermally Stable White Emitting Eu3+Complex@Nanozeolite@Luminescent Glass Composite with High CRI for Organic-Resin-Free Warm White LEDs.
Nowadays, it is still a great challenge for lanthanide complexes to be applied in solid state lighting, especially for high-power LEDs because they will suffer severe thermal-induced luminescence quenching and transmittance loss when LEDs are operated at high current. In this paper, we have not only obtained high efficient and thermally chemical stable red emitting hybrid material by introducing europium complex into nanozeolite (NZ) functionalized with the imidazolium-based stopper but also abated its thermal-induced transmittance loss and luminescence quenching behavior via coating it onto a heat-resistant luminescent glass (LG) with high thermal conductivity (1.07 W/mK). The results show that the intensity at 400 K for Eu(PPO)n-C4Si@NZ@LG remains 21.48% of the initial intensity at 300 K, which is virtually 153 and 13 times the intensity of Eu(PPO)3·2H2O and Eu(PPO)n-C4Si@NZ, respectively. Moreover, an organic-resin-free warm white LEDs device with a low CCT of 3994K, a high Ra of 90.2 and R9 of 57.9 was successfully fabricated simply by combining NUV-Chip-On-Board with a warm white emitting glass-film composite (i.e., yellowish-green emitting luminescent glass coated with red emitting hybrid film). Our method and results provide a feasible and promising way for lanthanide complexes to be used for general illumination in the future.
Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China.
Jinhui
J
Zhang
Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China.
Shuming
S
Gong
Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China.
Jinbo
J
Yu
School of Chemical Engineering and Technology, Hebei University of Technology , Guangrong Dao 8, Hongqiao District, Tianjin 300130, China.
Peng
P
Li
Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China.
Xuejie
X
Zhang
Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China.
Yuwei
Y
He
Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China.
Jianbang
J
Zhou
Rui
R
Shi
School of Chemical Engineering and Technology, Hebei University of Technology , Guangrong Dao 8, Hongqiao District, Tianjin 300130, China.
Huanrong
H
Li
Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China.
Aiyun
A
Peng
Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University , Guangzhou, Guangdong 510275, PR China.
Jing
http://orcid.org/0000-0002-1246-991X
J
Wang
europium composite; high CRI; high thermal stability; luminescent glass; nanozeolite; white LEDs