1 中国福建光电信息科学与技术创新实验室（闽都创新实验室），福建 福州 350108
2 中国科学院福建物质结构研究所中国科学院光电材料化学与物理院重点实验室，福建 福州 350002
3 东华大学先进玻璃制造技术教育部工程研究中心，上海 201620
4 福建师范大学化学与材料学院，福建 福州 350007
绿光转换材料是激光投影显示的核心部件，然而目前适用于高品质激光显示的高性能窄带绿光转换材料仍较为短缺。为此，将商用窄带绿色β-SiAlON∶Eu2+荧光粉与基于新型玻璃组分的低熔点玻璃以薄膜形式共烧结在蒸镀一维光子晶体膜的高导热蓝宝石基片上，形成一体化微晶玻璃薄膜复合材料。研究表明，经低温共烧β-SiAlON∶Eu2+受玻璃组分热侵蚀不显著，复合材料荧光内量子效率为55%，半峰全宽为54 nm，150 ℃时荧光积分强度仍保持室温下的90%左右；一维光子晶体膜大幅增强了绿光前向发射强度约1.5倍；材料在蓝光激光功率密度达到9 W/mm2时，产生发光饱和，对应光通量为492 lm；并初步探讨了发光饱和机理；耦合红色激光后，色域达到95.6% NTSC。
光学材料 荧光微晶玻璃 激光显示 氮氧化物 发光性能 激光与光电子学进展
2022, 59(15): 1516007
1 College of Microelectronics, College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China
2 State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering,
3 State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China
The rectifying behavior between graphene and semiconductors makes novel type of solar cells, photodetectors and light emitting diodes (LEDs). The interface between graphene and ZnO is the key for the performance of the optoelectronic devices. Herein, we find that green light emission is very strong for the forward biased graphene/ZnO nanowire van derWaals heterostructure.We correlated the green light emission with the surface defects locating at the ZnO nanowire surface through the detailed high resolution transmission electron microscopy and photoluminescence measurements. We pointed out engineering the surface of ZnO nanowires could bring a dimension of designing graphene/ZnO LEDs, which could be extended to other types of graphene/semiconductor heterostructure based optoelectronic devices.
ZnO nanowire ZnO nanowire van derWaals heterostructure van derWaals heterostructure light-emitting diode (LED) light-emitting diode (LED) Frontiers of Optoelectronics
2016, 9(1): 87
