<p>Non-metallic phosphors with high thermal stability and low thermal quenching (TQ) are expected to achieve the development and application of environmentally friendly and low-cost efficient light-emitting diodes (LEDs). Herein, a novel non-metallic hydrogen-bonded organic framework (TCBPE-HOF) phosphor with aggregation-induced emission (AIE) characteristic is synthesized by the assembly of 1,1,2,2-tetra(4-carboxy biphenyl)ethylene (TCBPE) under a simple solvothermal method for efficient LEDs with low TQ. The TCBPE-HOF shows a rare example of a 4-fold interpenetrated network based on an 8-connected hex net. It can maintain 71% of its initial emission intensity after being heated to 150 °C, outperforming several commercial inorganic phosphors. The fabrication of cyan LED devices enables it to be a viable alternative to currently available commercial phosphors.</p>

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Low Thermal Quenching of an AIE-based Hydrogen-bonded Organic Framework for Phosphor-converted Light-emitting Diodes

  • Zhihui Sun,
  • Peipei Yin,
  • Shiyang He,
  • Kaige Zhang,
  • Xiangrong Pan,
  • Jiayi Wang,
  • Peinan Hao,
  • Zhan Zhou,
  • Xiaogang Yang,
  • Lufang Ma,
  • Chaoliang Tan

摘要

Non-metallic phosphors with high thermal stability and low thermal quenching (TQ) are expected to achieve the development and application of environmentally friendly and low-cost efficient light-emitting diodes (LEDs). Herein, a novel non-metallic hydrogen-bonded organic framework (TCBPE-HOF) phosphor with aggregation-induced emission (AIE) characteristic is synthesized by the assembly of 1,1,2,2-tetra(4-carboxy biphenyl)ethylene (TCBPE) under a simple solvothermal method for efficient LEDs with low TQ. The TCBPE-HOF shows a rare example of a 4-fold interpenetrated network based on an 8-connected hex net. It can maintain 71% of its initial emission intensity after being heated to 150 °C, outperforming several commercial inorganic phosphors. The fabrication of cyan LED devices enables it to be a viable alternative to currently available commercial phosphors.