Microfluidic white organic light-emitting diode

2016-0203-09
researcher's name
小林 直史
affiliation
理工学術院 基幹理工学研究科 電子物理システム学専攻
keyword

background

● Organic light-emitting diodes (OLEDs) have been expected for next generation of displays and lightings
● Recently liquid-OLEDs with liquid organic semiconductors (LOSs) have been developed
● Our research group proposed microfluidic OLEDs, which integrated liquid-OLEDs with microfluidic technologies (Fig. 1)

summary

● Greenish-blue and yellow LOSs were applied as liquid emitters
● Integrated 60-µm microchannels were fabricated
● Greenish-blue and yellow liquid emitters were alternately injected into the fine microchannels (Fig. 3)
● White light was generated with simultaneous greenish-blue and yellow emissions (Fig. 4 (a), (b))


predominance

● Formation of crack-free light-emitting layer taking advantage of liquid flowability
● Recovery emission via reinjection of new LOSs
● On-demand multicolor light emission

application/development

● Next generation displays and lightings
● On-demand portable biochip

material

  • Fig.1 Microfluidic OLEDs technology
  • Fig.2 Concept of microfluidic white OLEDs (WOLEDs)
  • Fig.3 Fabrication result of microfluidic WOELDs
  • Fig.4 (a) EL spectrum and (b) CIE value of microfluidic WOLEDs
posted: 2016/02/03