We have demonstrated a high perlbrmance top-emitting organic light-emitting diode （TEOLED） achieving a brightness of 1000 cd/m^2 at a low voltage of 3.4 V, a power efficiency of 55.2 lm/W at a brightness of 611cd/m^...We have demonstrated a high perlbrmance top-emitting organic light-emitting diode （TEOLED） achieving a brightness of 1000 cd/m^2 at a low voltage of 3.4 V, a power efficiency of 55.2 lm/W at a brightness of 611cd/m^2. and a low efficiency roll-off 5.1% calculated from the maximum efficiency value to that of 5000 cd/m^2. Such im- proved properties are controlled by electron injection from 7-diphenyl-1,10-phenanthroline （BPhen） into and trans- port by the 2,4,6-tris[3＇-（pyridin-3-yl）biphenyl-3-yl]-l,3,5-triazine （TmPPPyTz） layer along with hole injection from 4,4＇,4＂-tris（N-carbazolyl）diphenylamine （TcTa） directly into the fac-tris（2-phenylpyridine）iridium [lr（ppy）3] highest occupied molecular level （HOMO）, leading to direct carrier recombination and excitons formation on the phosphor dopants. Eventually we integrated our high performance TEOLEDs on complementary metal oxide semi- conductor （CMOS） substrates to realize super video graphics array （SVGA） OLED microdisplays.展开更多
文摘We have demonstrated a high perlbrmance top-emitting organic light-emitting diode （TEOLED） achieving a brightness of 1000 cd/m^2 at a low voltage of 3.4 V, a power efficiency of 55.2 lm/W at a brightness of 611cd/m^2. and a low efficiency roll-off 5.1% calculated from the maximum efficiency value to that of 5000 cd/m^2. Such im- proved properties are controlled by electron injection from 7-diphenyl-1,10-phenanthroline （BPhen） into and trans- port by the 2,4,6-tris[3＇-（pyridin-3-yl）biphenyl-3-yl]-l,3,5-triazine （TmPPPyTz） layer along with hole injection from 4,4＇,4＂-tris（N-carbazolyl）diphenylamine （TcTa） directly into the fac-tris（2-phenylpyridine）iridium [lr（ppy）3] highest occupied molecular level （HOMO）, leading to direct carrier recombination and excitons formation on the phosphor dopants. Eventually we integrated our high performance TEOLEDs on complementary metal oxide semi- conductor （CMOS） substrates to realize super video graphics array （SVGA） OLED microdisplays.
