http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Kulshreshtha, Chandramouli,Kwak, Jong Ho,Park, Young-Jo,Sohn, Kee-Sun Optical Society of America 2009 Optics letters Vol.34 No.6
<P>We examined the photoluminescent behaviors of MgSiN2:Mn2+ and MgSiN2:Ce3+,Mn2+ phosphors for use in white-light-emitting diodes. The red emission from MgSiN2:Mn2+ phosphors consisted of two Gaussian components, P1 from a single Mn2+ ion and P2 from either Mn2+ pairs or clusters. Decay analysis based on the Yokota and Tanimoto equation identified long decay for P1 and fast decay for P2. Most importantly, Ce3+ codoping enhanced Mn2+ emission intensity; in particular, emission at 460 nm excitations was promoted by the Ce3+ codoping.</P>
High efficiency green phosphorescent OLEDs with triplet exciton confinement architecture
Woo Sik Jeon,Chandramouli Kulshreshtha,Jae Hyung Yu,Myung Jin Lim,Jung Soo Park,권장혁 한국물리학회 2011 Current Applied Physics Vol.11 No.3
We report highly efficient green phosphorescent devices comprising a triplet exciton confinement configuration, using 4,4´-N,N´-dicarbazoleterpheyl (CTP) as a narrowband-gap host and high triplet energy charge transporting layers. Maximum current and power efficiencies of 56.89 cd/A, and 48.22 lm/W (external quantum efficiency of 18.0%) are demonstrated by optimizing the doping concentration. Such high efficiency is attributed to good confinement effect of triplet excitons by narrow band-gap CTP host with reasonable doping concentration and introduction of good exciton blocking layers at the emitting layer interfaces.