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Organic optoelectronic integrated devices(OIDs) with ultraviolet(UV) photodetectivity and different color emitting were constructed by using a thermally activated delayed fluorescence(TADF) material 4, 5-bis(carbazol-9-yl)-1, 2-dicyanobenzene(2 CzPN) as host. The OIDs doping with typical red phosphorescent dye [tris(1-phenylisoquinoline)iridium(Ⅲ), Ir(piq)_3], orange phosphorescent dye {bis[2-(4-tertbutylphenyl)benzothiazolato-N,C~(2’)]iridium(acetylacetonate),(tbt)_2 Ir(acac)}, and blue phosphorescent dye [bis(2, 4-di-fluorophenylpyridinato)-tetrakis(1-pyrazolyl)borate iridium(Ⅲ), FIr6] were investigated and compared. The(tbt)_2 Ir(acac)-doped orange device showed better performance than those of red and blue devices, which was ascribed to more effective energy transfer. Meanwhile, at a low dopant concentration of 3 wt.%, the(tbt)_2 Ir(acac)-doped OIDs showed the maximum luminance, current efficiency, power efficiency of 70786 cd/m~2, 39.55 cd/A, and 23.92 lm/W, respectively, and a decent detectivity of 1.07 × 10~(11) Jones at a bias of -2 V under the UV-350 nm illumination. This work may arouse widespread interest in constructing high efficiency and luminance OIDs based on doping phosphorescent dye.
Organic optoelectronic integrated devices (OIDs) with ultraviolet (UV) photodetectivity and different color emitting were constructed by using a thermally activated delayed fluorescence (TADF) material 4, 5-bis The OIDs doping with typical red phosphorescent dye [tris (1-phenylisoquinoline) iridium (III), Ir (piq) _3], orange phosphorescent dye {bis [2- (4-tertbutylphenyl) benzothiazolato-N, C (2’)] iridium (acetylacetonate), (tbt) _2 Ir (acac)}, and blue phosphorescent dye [bis (2,4- di-fluorophenylpyridinato) -tetrakis (1-pyrazolyl) borate iridium ] were investigated and compared. The (tbt) _2 Ir (acac) -doped orange device showed better performance than those of red and blue devices, which wascribed to more effective energy transfer. Meanwhile, at a low dopant concentration of 3 wt. %, the (tbt) _2 Ir (acac) -doped OIDs showed the maximum luminance, current efficiency, power efficiency of 70786 cd / m ~ 2, 39.55 cd / A, and 23.92 lm / W, respectively, and a decent detectivity of 1.07 × 10 ~ (11) Jones at a bias of -2 V under the UV-350 nm illumination. This work may arouse widespread interest in constructing high efficiency and luminance OIDs based on doping phosphorescent dye.