Improved Performance of Organic Light Emitting Devices Using Phenanthroline/ Cs2CO3/Al Cathode
In this study, a cathode with structure of phenanthroline (Bphen)/Cs2CO3/Al has been used in Tris-8-hydroxyquinoline aluminum (Alq3) based organic light-emitting devices (OLEDs). When locating a 5 nm Bphen layer at the interface between Alq3 and Cs2CO3, OLEDs perform much larger current. Here Bphen is used to further decrease the electron injection barrier, which has been confirmed by using ultraviolet photoelectron spectroscopy to test the electronic structure of the mixture between Bphen and Cs2CO3. Moreover, Bphen owns deep HOMO level and wide band gap, so that Bphen/Cs2CO3/Al cathode has a wide application in OLEDs emitting light with short wavelength.
phenanthroline Cesium carbonate electron injection hole blocking ezciton confinement
Jiarong Lian Haitao Xu fangfang Niu Yawei Liu Pengju Zeng
Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Science, South China Agricultural University, Guangzhou, Guangdong province,Peoples Repu
国际会议
The 11th Asian Symposium on Information Display(ASID09)(第11届亚洲信息显示会议)
广州
英文
259-262
2009-10-07（万方平台首次上网日期，不代表论文的发表时间）