Luminescence of Rare Earth Complex in Organic-Inorganic Heterostructure
ZHANG Fu-jun1, XU Zheng1*, HUANG Jin-zhao1, WANG Yong1, SUN Bo2, PEI Juan2
1. Institute of Optoelectronics Technology Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China 2. Department of Materials Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
Abstract：Luminescence of rare earth complex based on organic-inorganic heterostructure is reported. The structure of the device is ITO/PVK:Tb/inorganic material/Al, where inorganic material includes ZnS, ZnO or ZnSe. For this structure, the authors obtained the characteristic emission of Tb ion. A large part of driving voltage was dropped on the PVK layer because the dielectric constant of ZnS is 3 times bigger than that of PVK. The electric field strength in PVK layer was improved, so the velocity of hole in PVK was increased. The balance of injected charge was enhanced.
[1] Tang C W, VanSlyke S A, Chen C H. J. Appl. Phys., 1989, 65: 3610. [2] Weissman S I. J. Chem. Phys., 1942, 10: 214. [3] Blom P W M, de Jong M J, Van Munster M G. Phys. Rev. B, 1997, 55: 656. [4] Anton G Muckl, Stenfan Berleb, Wolfgang Brutting. Markus Schwoerer Synthetic Metals, 2000, 111-112: 91. [5] Erik Schreiber, Fitting H J. J. Electron Spectroscopy and Related Phenomena, 2003, 131-132: 87. [6] YANG Sheng-yi, WANG Zhen-jia, XU Xu-rong, et al(杨盛谊, 王振家, 徐叙瑢，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2000, 20(6): 872. [7] DAO Dong-liang, HUANG Bao-gui, XU Yi-zhuang, et al(陶栋梁, 黄保贵, 徐怡庄, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2001, 21(6): 740.
