Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Woo Sik Jeon"'
Publikováno v:
Advances in Materials Science and Engineering, Vol 2012 (2012)
Key factors to control the efficiency in iridium doped red and green phosphorescent light emitting diodes (PhOLEDs) are discussed in this review: exciton confinement, charge trapping, dopant concentration and dopant molecular structure. They are not
Externí odkaz:
https://doaj.org/article/43d130e25d6e423ba077c32d6df931cc
Autor:
Dong-Won Kim, Jang Hyuk Kwon, Nam-Jin Lee, Min Chul Suh, Sang Hee Cho, Ji-Hoon Lee, Woo Sik Jeon, Dae Hee Lee
Publikováno v:
Dyes and Pigments. 95:221-228
A series of new carbazole derivatives with good solubility and electronic properties for use as host materials for blue phosphorescent organic light-emitting diodes is reported. A twisted biphenyl moiety at the center of the host materials was applie
Publikováno v:
Molecular Crystals and Liquid Crystals. 565:14-21
We report a high mobility hole extraction material, N,N,N′,N′,-tetrakis(biphenyl-4-yl)benzidine (TBBD) for organic solar cell applications. Its highest occupied molecular orbital energy value at 5.3 eV is well matched with a donor layer and its h
Publikováno v:
Molecular Crystals and Liquid Crystals. 565:8-13
We report that the S-shaped kink of current density-voltage (J-V) characteristics, which reduce fill factor of organic photovoltaic cells, can be removed by substrate heating during donor layer deposition process. Subphthalocyanine (SubPc) donor film
Publikováno v:
Current Applied Physics. 12:e42-e45
We present high color temperature white organic light emitting diodes with a simple p-i-n structure. A sky blue phosphorescent dopant of iridium(III) bis[4,6-(difluorophenyl)-pyridinato- N , C 2’ ] picolinate and a red phosphorescent dopant of bis(
Publikováno v:
SID Symposium Digest of Technical Papers. 43:1492-1495
We report a new way for the driving voltage reduction through non-radiative charge recombination interfaces in organic light-emitting devices (OLEDs). Non-radiative charge recombination interfaces made between a hole transporting layer and a deep low
Autor:
Young Hoon Son, Min Chul Suh, Woo Sik Jeon, Jung Soo Park, Jang Hyuk Kwon, Ling Li, Dae Chul Lim
Publikováno v:
Organic Electronics. 13:939-944
We report a unique non-radiative p-n-p junction structure to provide high current conduction with high mobility in organic semiconductor devices. The current conduction was improved by increasing p-n junctions made with intrinsic p-type hole transpor
Publikováno v:
Organic Electronics. 13:586-592
We report low voltage driving and highly efficient blue phosphorescence organic light emitting diodes (PHOLEDs) fabricated by soluble process. A soluble small molecule mixed host system consisting of hole transporting 4,4’,4’’ tris(N-carbazolyl
Publikováno v:
Advances in Materials Science and Engineering, Vol 2012 (2012)
Key factors to control the efficiency in iridium doped red and green phosphorescent light emitting diodes (PhOLEDs) are discussed in this review: exciton confinement, charge trapping, dopant concentration and dopant molecular structure. They are not
Publikováno v:
Molecular Crystals and Liquid Crystals. 550:311-319
We report a new electron transport material, 1,6-di(pyridin-3-yl)-3,8-di(phenyl)pyrene (PPP). It has a very good electron mobility of 4.1 × 10−3 cm2/Vs at the 0.1 MV/cm. This PPP is evaluated along with other electron transport materials such as A