School of Materials Science & Engineering, Tianjin University of Technology, Key Laboratory of Photoelectric Display Materials & Devices (Tianjin University of Technology), Ministry of Education, Tianjin Key Lab for Photoelectric Display Materials & Devices, Tianjin 300384, China
Abstract：The authors report a novel white organic light-emitting device (WOLED), which uses a strategy of exciting organic/inorganic color conversion film with a blue organic light-emitting diode (OLED). The luminescent layer of the blue OLED was prepared by use of CBP host blended with a blue highly fluorescent dye N-BDAVBi. The organic/inorganic color conversion film was prepared by dispersing a mixture of red pigment VQ-D25 and YAG∶Ce3+ phosphor in PMMA. The authors have achieved a novel WOLED with the high color stability by optimizing the thickness and fluorescent pigment concentration of the color conversion film. When the driving voltage varied between 6 and 14 V, the color coordinates (CIE) varied slightly from (0.354, 0.304) to (0.357, 0.312) and the maximum current efficiency is about 5.8 cd·A-1(4.35 mA·cm-2)，the maximum brightness is 16 800 cd·m-2 at the operating voltage of 14 V.
Key words：Organic light-emitting device;Organic/inorganic color conversion film;White light
