摘要
为了实现高显色指数和流明效率的白光发光二极管,在(0001)蓝宝石衬底上利用金属有机化学气相沉积系统,生长了双波长发射的InGaN/GaN多量子阱发光二极管结构.通过对不同In组分含量的双波长发射发光二极管结构的光致发光和电致发光性能进行分析,结果表明In组分含量对双波长发射发光二极管的光致发光谱的稳定性及发光效率有重要影响.此外,用双蓝光发射的芯片来激发YAG:Ce荧光粉实现了高显色指数白光发射.
In order to realize preferable white light-emitting diodes with high color rendering index and optimized luminous efficiency,white InGaN/GaN multi-quantum-well dual-wavelength light-emitting diodes（LEDs） were grown on（0001）-oriented sapphire substrates by metal-organic chemical vapor deposition（MOCVD）.Photoluminescence and electroluminescence properties of dual-wavelength LEDs with different In content were also studied.The experimental results indicated that In component plays a critical role on stability for electroluminescence spectrum and luminous efficiency of the dual-wavelength LED structures.In addition,YAG∶Ce phosphor-converted white light emission with high color rendering index was achieved using dual-blue emitting active regions.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2011年第2期190-193,共4页
Acta Photonica Sinica
基金
教育部留学回国人员科研启动基金
广东省教育部产学研结合项目(No.2009B090300338)
广东省自然科学基金(No.8521063101000007)
华南师范大学学生课外科研重点课题项目(No.10GDKC07)资助
关键词
INGAN/GAN多量子阱
双波长
发光二极管
金属有机化学气相沉积
InGaN/GaN multi-quantum well
Dual-wavelength
Light-Emitting Diodes（LED）
Metal-Organic Chemical Vapor Deposition（MOCVD）
