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Promotional effect of silver nanoparticle embedded Ga–Zr-codoped TiO2 as an alternative anode for efficient blue, green and red PHOLEDs

机译:银纳米粒子嵌入的Ga-Zr共掺杂的TiO2作为高效蓝色,绿色和红色PHOLED的替代阳极的促进作用

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Efficient blue, green and red phosphorescent OLEDs have been harvested from silver nanoparticles embedded at a glass:Ga–Zr-codoped TiO _(2) interface. The embedded silver nanoparticles at the interface removed the non productive hole current and enhanced the efficiencies. The blue emitting device (456 nm) with emissive layer Ir(fni) _(3) exhibits a maximum luminance ( L ) of 40?512 cd m ~(?2) (ITO – 37?623 cd m ~(?2) ), current efficiency ( η _(c) ) of 41.3 cd A ~(?1) (ITO – 40.5 cd A ~(?1) ) and power efficiency ( η _(p) ) of 43.1 lm w ~(?1) (ITO – 39.8 lm w ~(?1) ) and external quantum efficiency ( η _(ex) ) of 19.4% (ITO – 6.9%). A newly fabricated green device based on emissive layer Ir(tfpdni) _(2) (pic) shows intensified emission at 514 nm, luminance of 46?435 cd m ~(?2) (ITO – 40?986 cd m ~(?2) ), current efficiency of 49.7 cd A ~(?1) (ITO – 47.3 cd A ~(?1) ), power efficiency of 48.6 lm w ~(?1) (ITO – 41.4 lm w ~(?1) ) and external quantum efficiency of 17.5% (ITO – 14.9%). The red device (618 nm) with emissive layer Ir(bbt) _(2) (acac) shows luminance of 8936 cd m ~(?2) (ITO – 8043 cd m ~(?2) ), current efficiency of 6.9 cd A ~(?1) (ITO – 4.6 cd A ~(?1) ), power efficiency of 5.7 lm w ~(?1) (ITO – 4.9 lm w ~(?1) ) and external quantum efficiency of 9.3% (ITO – 6.9%).
机译:高效的蓝色,绿色和红色磷光OLED已从嵌入在玻璃中的银纳米颗粒收获:Ga-Zr掺杂的TiO _(2)界面。在界面处嵌入的银纳米颗粒消除了非生产性空穴电流并提高了效率。具有发射层Ir(fni)_(3)的蓝色发光器件(456 nm)的最大亮度(L)为40?512 cd m〜(?2)(ITO – 37?623 cd m〜(?2) ),41.3 cd A〜(?1)(ITO – 40.5 cd A〜(?1))的电流效率(η_(c))和43.1 lm w〜(?1)的功率效率(η_(p)) )(ITO – 39.8 lm w〜(?1))和外部量子效率(η_(ex))为19.4%(ITO – 6.9%)。一种新的基于发射层Ir(tfpdni)_(2)(pic)的绿色器件显示出在514 nm处发射增强,亮度为46?435 cd m〜(?2)(ITO – 40?986 cd m〜(? 2)),电流效率为49.7 cd A〜(?1)(ITO – 47.3 cd A〜(?1)),功率效率为48.6 lm w〜(?1)(ITO – 41.4 lm w〜(?1) )和17.5%的外部量子效率(ITO – 14.9%)。具有发射层Ir(bbt)_(2)(acac)的红色器件(618 nm)的亮度为8936 cd m〜(?2)(ITO – 8043 cd m〜(?2)),电流效率为6.9 cd A〜(?1)(ITO – 4.6 cd A〜(?1)),功率效率为5.7 lm w〜(?1)(ITO – 4.9 lm w〜(?1)),外部量子效率为9.3%( ITO – 6.9%)。

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