TY - JOUR
T1 - Enhanced Optical Performance of BaMgAl10O17
T2 - Eu2+ Phosphor by a Novel Method of Carbon Coating
AU - Yin, Liang Jun
AU - Dong, Juntao
AU - Wang, Yinping
AU - Zhang, Bi
AU - Zhou, Zheng Yang
AU - Jian, Xian
AU - Wu, Mengqiang
AU - Xu, Xin
AU - Van Ommen, J. Ruud
AU - Hintzen, Hubertus T.
N1 - Accepted Author Manuscript
PY - 2016/1/6
Y1 - 2016/1/6
N2 - Many strategies have been adopted to improve thermal degradation of phosphors. Because of the stability and high transmittance of graphene, here we report a novel method of carbon coating on BaMgAl10O17:Eu2+ (BAM) phosphor particles through chemical vapor deposition. The chemical composition, microstructure, and luminescence performance of carbon-coated BAM were characterized carefully. This coating can be controlled within 3-10 atomic layers, depending on the reaction time. Because of the decrease of surface defects and the effective weakening effect of oxidizing Eu2+ to Eu3+ after carbon coating, different layer numbers showed an obvious effect on the optical properties of carbon-coated BAM. Carbon-coated BAM phosphors had higher emission intensity and better oxidation resistance at high temperature than uncoated BAM phosphors. These results indicate that the method of carbon coating on phosphor particles is a promising way to improve the luminescence properties of other phosphors used in lighting and display devices.
AB - Many strategies have been adopted to improve thermal degradation of phosphors. Because of the stability and high transmittance of graphene, here we report a novel method of carbon coating on BaMgAl10O17:Eu2+ (BAM) phosphor particles through chemical vapor deposition. The chemical composition, microstructure, and luminescence performance of carbon-coated BAM were characterized carefully. This coating can be controlled within 3-10 atomic layers, depending on the reaction time. Because of the decrease of surface defects and the effective weakening effect of oxidizing Eu2+ to Eu3+ after carbon coating, different layer numbers showed an obvious effect on the optical properties of carbon-coated BAM. Carbon-coated BAM phosphors had higher emission intensity and better oxidation resistance at high temperature than uncoated BAM phosphors. These results indicate that the method of carbon coating on phosphor particles is a promising way to improve the luminescence properties of other phosphors used in lighting and display devices.
UR - http://resolver.tudelft.nl/uuid:71e714e4-f67c-4c21-a7ab-d19b93c0ff46
UR - http://www.scopus.com/inward/record.url?scp=84957599553&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.5b10215
DO - 10.1021/acs.jpcc.5b10215
M3 - Article
AN - SCOPUS:84957599553
SN - 1932-7447
VL - 120
SP - 2355
EP - 2361
JO - The Journal of Physical Chemistry C
JF - The Journal of Physical Chemistry C
IS - 4
ER -