Anthracene derivatives for stable blue-emitting organic electroluminescence devices

Abstract

A class of anthracene derivative which is suitable used as emitting materials for producing efficient and stable blue emission for full color organic electroluminescence (EL) devices has been developed. Multilayer organic EL devices using these fluorescent materials as an emitting layer produced blue emissions with good chromaticity and luminous efficiency as high as 3.5 cd/A. The half life of 4000 h of blue emission EL device with initial light output 700 cd/m2 has been achieved.

Highly efficient 7,8,10-triphenylfluoranthene-doped blue organic light-emitting diodes for display application

“…The device achieves maximum luminous efficiency as high as 3.33 cd/ A with an external quantum efficiency of 2.48% at 11.66 mA/ cm 2 and pure blue light with CIE coordinates of 0.164 and 0.188 ͑x , y, respectively͒ are observed. The luminous efficiency is comparable to that of other reported OLEDs with a fluorescent blue dopant, such as perylene 12 and anthracene derivative, 6 but not as high as monostyrylamine derivative doped diphenyanthracene. 17 Since the energy transfer can be achieved between DPF and TPF, different doping concentrations were studied; their PL ͑excited at 300 nm͒ and EL spectra are shown in Fig.…”

“…On the one hand, highly efficient red 4 and green 5 electroluminescence devices have already been described; however, highly efficient pure blue light remains a challenge. Consequently, many different blue-fluorescent molecules, such as anthracene derivatives, 6 oligoquinoline, 7 tetraphenylsilane, 8 and distyrylarylene derivatives 9 have been proposed to solve this problem. Among these materials, external quantum efficiencies on average of about 2.4% can be achieved.…”

Recent Advances in Polymer Organic Light-Emitting Diodes (PLED) Using Non-conjugated Polymers as the Emitting Layer and Contrasting Them with Conjugated Counterparts

“…17) based on a known deep-blue emitter, 9,10-di(2-naphthalenyl)anthracene 55 and a series of random copolymers with styrene P(ADNco-S) or carbazole P(ADN-co-VK) (Fig. 17).…”

New Fluorescent Blue OLED Host and Dopant Materials Based on the Spirobenzofluorene

“…Therefore, blue fluorescent material is still of prime importance for application in full-color flat-panel displays. To date, several derivatives of anthracene, 15 binaphthol, 16,17 spirobifluorene-linked bianthracene, [18][19][20][21] and spirofluorenebenzofluorene [22][23][24][25][26][27][28][29] have been developed and subsequent attempts were made to improve their electroluminescent (EL) properties.…”