Fine-tuning the thicknesses of organic layers to realize high-efficiency and long-lifetime blue orga

• 作 者: 于建宁 张民艳 李崇 尚玉柱 吕燕芳 魏斌 黄维
• 机 构: Key Laboratory of Advanced Display and System Applications,Ministry of Education, Shanghai Universit
• 出 处: Chinese Physics B
• 发表日期: 2012年08期
• 关键词: lifetime naphthyl luminous tuning diphenyl lighting fabricate colour benzene nor

By using p-bis(p-N,N-diphenyl-aminostyryl)benzene doped 2-tert-butyl-9,10-bis-β-naphthyl)-anthracene as an emitting layer,we fabricate a high-efficiency and long-lifetime blue organic light emitting diode with a maximum external quantum efficiency of 6.19% and a stable lifetime at a high initial current density of 0.0375 A/cm2.We demonstrate that the change in the thicknesses of organic layers affects the operating voltage and luminous efficiency greater than the lifetime.The lifetime being independent of thickness is beneficial in achieving high-quality full-colour display devices and white lighting sources with multi-emitters.

By using p-bis (pN, N-diphenyl-aminostyryl) benzene doped 2-tert-butyl-9,10-bis- beta -naphthyl) -anthracene as an emitting layer, we fabricate a high-efficiency and long- organic light emitting diode with a maximum external quantum efficiency of 6.19% and a stable lifetime at a high initial current density of 0.0375 A / cm2.We demonstrate that the change in the thicknesses of organic layers affects the operating voltage and luminous efficiency greater than the lifetime.The lifetime is independent of thickness is beneficial in achieving high-quality full-color display devices and white lighting sources with multi-emitters.