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Hybrid White Light-Emitting Diodes Utilizing Radiative or Nonradiative Energy Transfer for Wavelength Conversion

X. A. Cao, Shuti Li, Xueqing Li,L. Y. Liu

IEEE Transactions on Electron Devices(2018)

Cited 6|Views2
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Abstract
Hybrid light-emitting diodes (LEDs) were fabricated by spin coating poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT) on blue InGaN/GaN multiple-quantum-well (MQW) LED chips as a downconverter. As the F8BT film thickness was in the range of 235-290 nm, the hybrid LEDs emitted cool white light with a downconversion efficiency of 28.8%. The F8BT film quality was markedly improved by postannealin...
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Key words
Light emitting diodes,Quantum well devices,Phosphors,Absorption,Energy exchange,Lighting,Image color analysis
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