Organic green light emitting devices(LEDs) with multi-quantum well(MQW) structure were fabricated. Aromatic diamine(TPD) was used as hole-transporting layer and potential barrier layer; Tris(8-hydroxyquinoline) alumin...Organic green light emitting devices(LEDs) with multi-quantum well(MQW) structure were fabricated. Aromatic diamine(TPD) was used as hole-transporting layer and potential barrier layer; Tris(8-hydroxyquinoline) aluminum(Alq 3) was acted as electron-transporting emitter and MQW green emitter. Air-stable aluminum(Al) was used as electron-injection contact. The influence of the thickness of potential barrier layer and the number of quantum well on the electroluminescent(EL) efficiencies of the devices was investigated. The organic LEDs with two quantum wells showed enhanced EL efficiencies. Maximum external quantum efficiency and brightness were 1.04 % and 7 000 cd/m 2, respectively.展开更多
文摘Organic green light emitting devices(LEDs) with multi-quantum well(MQW) structure were fabricated. Aromatic diamine(TPD) was used as hole-transporting layer and potential barrier layer; Tris(8-hydroxyquinoline) aluminum(Alq 3) was acted as electron-transporting emitter and MQW green emitter. Air-stable aluminum(Al) was used as electron-injection contact. The influence of the thickness of potential barrier layer and the number of quantum well on the electroluminescent(EL) efficiencies of the devices was investigated. The organic LEDs with two quantum wells showed enhanced EL efficiencies. Maximum external quantum efficiency and brightness were 1.04 % and 7 000 cd/m 2, respectively.
