N-annelated perylenes as effective green emitters for OLEDs

被引：19

作者：

Bucinskas, A. ^{[1
]}

Volyniuk, D. ^{[1
]}

Danyliv, Y. ^{[1
]}

Grazulevicius, J. V. ^{[1
]}

Baryshnikov, G. ^{[2
]}

Minaev, B. ^{[2
]}

Ivaniuk, K. ^{[3
]}

Cherpak, V. ^{[3
]}

Stakhira, P. ^{[3
]}

机构：

[1] Kaunas Univ Technol, Dept Organ Technol, Dept Polymer Chem & Technol, LT-50254 Kaunas, Lithuania

[2] Bohdan Khmelnytsky Natl Univ, UA-18031 Cherkassy, Ukraine

[3] Lviv Polytech Natl Univ, UA-79013 Lvov, Ukraine

来源：

RSC ADVANCES | 2015年 / 5卷 / 95期

关键词：

ORGANIC SEMICONDUCTORS; PHOSPHORESCENT; CARBAZOLE; ENERGY; HOST; ELECTROLUMINESCENCE; PHOTOPHYSICS; POTENTIALS; DESIGN;

D O I：

10.1039/c5ra15075b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

New carbazole-substituted N-annelated perylenes with different linking topologies of the chromophores were synthesized and their physical properties were studied with various experimental techniques including thermogravimetric analysis, differential scanning calorimetry, UV-vis, fluorescence and photoelectron emission spectroscopies and cyclic voltammetry. The synthesized materials exhibit extremely high thermal stability with 5% weight loss temperatures ranging from 400 to 457 degrees C. Photoluminescence quantum yields of the solid films of the compounds range from 33 to 51%. The ionization potentials of the solid samples established by the electron photoemission technique were found to be in the range of 5.14-5.53 eV. Using the newly synthesized compounds as emissive materials, efficient organic light-emitting diodes (OLEDs) were fabricated with the emission pattern covering the broad visible region from 475 to 675 nm. Bright green OLEDs exhibited luminance exceeding 62 000 cd m(-2) and external quantum efficiency reaching 4.2%.

引用

页码：78150 / 78159

页数：10

共 42 条

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