1161009-88-6Relevant articles and documents
The relationship between the substitution position of the diphenylphosphine oxide on the spirobifluorene and device performances of blue phosphorescent organic light-emitting diodes
Eok Jang, Sang,Woong Joo, Chul,Ok Jeon, Soon,Soo Yook, Kyoung,Yeob Lee, Jun
, p. 1059 - 1065 (2010)
A high triplet energy host (SPPO11) with a diphenylphosphine oxide group attached to the 4 position of the spirobifluorene was synthesized and its device performances were compared with those of the triplet host with the diphenylphosphine oxide at the 2 position of the spirobifluorene (SPPO1). The thermal stability of the SPPO11 was much better than that of the SPPO1 and the efficiency of the blue PHOLED with the SPPO11 host was higher than that of the blue PHOLED with the SPPO1 host. The SPPO11 could be effectively used as the high triplet energy host in the blue PHOLED and a high quantum efficiency of 17.2%and a current efficiency of 35.3 cd/A were obtained in the blue PHOLED with the SPPO11 host.
Synthesis and electroluminescence properties of new blue dual-core OLED emitters using bulky side chromophores
Lee, Suji,Kim, Beomjin,Jung, Hyocheol,Shin, Hwangyu,Lee, Hayoon,Lee, Jaehyun,Park, Jongwook
, p. 255 - 261 (2017)
Using a 1-anthracen-9-yl-pyrene (AP) dual-core emitter, two new emitters of blue light, 1-spiro-9,9′-bifluoren-4-yl-6-(10-spiro-9,9′-bifluoren-4-yl-anthracen-9-yl)-pyrene (DSF-AP) and 1-[2-(9H-carbazol-9-yl)phenyl]-6-[2-(9H-carbazol-9-yl)phenyl-anthracen-9-yl]-pyrene (DCP-AP), were synthesized through boration and the Suzuki aryl-aryl coupling reaction. These two materials exhibited PLmax values at 443?nm and 448?nm in a chloroform solution, and at 458?nm and 463?nm in a thin-film state. EL devices with the synthesized compounds were fabricated in the following configuration: ITO/4,4′,4″-tris(N-(2-naphthyl)-N-phenylamino)triphenylamine (2-TNATA) (60?nm)/N,N′-bis (naphthalene-1-yl)-N,N′-bis(phenyl)benzidine (NPB) (15?nm)/synthesized blue light-emitting materials (35?nm)/Tris-(8-hydroxyquinoline)aluminum (Alq3) (20?nm)/lithium fluoride (LiF) (1?nm)/Al (200?nm). Compared with the device made using an AP core lacking side groups, the device made with DCP-AP displayed 31% higher luminance efficiency (resulting in a value of 4.37?cd/A) and 32% higher power efficiency (to yield 1.93?lm/W), as well as a high external quantum efficiency (3.64%).
A containing 9, 9' - fluorene and dibenzofuran aromatic amine compound and its organic electroluminescent device (by machine translation)
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Paragraph 0060; 0064; 0065, (2018/11/04)
The present invention provides a containing 9, 9' - fluorene and dibenzofuran aromatic amine compound and its organic electroluminescent light emitting device, relates to organic photoelectric material technical field. The compound preparation method is simple, easily available raw materials, has suitable the highest occupied molecular orbital energy level, high T1 value and high refractive index, and have very good hole transporting capability, thermal stability and film-forming properties, is applied to the OLED devices, can significantly improve the luminous efficiency of the device, heat resistance and service life, also can effectively reduce the driving voltage of the device. (by machine translation)
Aromatic amine compound containing 9,9'-spirobifluorene and dibenzothiophene and organic electroluminescent device thereof
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, (2018/11/03)
The invention provides an aromatic amine compound containing 9,9'-spirobifluorene and dibenzothiophene and an organic electroluminescent device thereof, and relates to the technical field of organic photoelectric materials. The compound has a simple preparation method, easily available raw materials, good hole transport capability and stability, can realize charge balance in a light-emitting layer, has a suitable highest occupied molecular orbital energy level, a high T1 value and a high refractive index, can remarkably improve the light emitting efficiency, the heat resistance and the servicelife of the device when applied to an OLED device, and can also effectively reduce the driving voltage of the device, thereby being an OLED material with excellent performance.