Influence of the Energy Level Matching on the Performances of
Organic/Polymeric Electroluminescent Devices
TIAN Wen-jing, HUANG Jin-song1, WU Fang, SUN Chang-qing2, LIU Xiao-dong3, MA Yu-guang, LIU Shi-yong1, SHEN Jia-cong
Key Laboratory of Molecular Spectra and Structures, 1National Laboratory of Integrated Optic Electronics, 2Chemical Department, Jilin University, Changchun 130023
3Basic Medical College, Norman Bethum University of medical Science, Changchun 130023
Influence of the Energy Level Matching on the Performances of
Organic/Polymeric Electroluminescent Devices
Key Laboratory of Molecular Spectra and Structures, 1National Laboratory of Integrated Optic Electronics, 2Chemical Department, Jilin University, Changchun 130023
3Basic Medical College, Norman Bethum University of medical Science, Changchun 130023
Abstract： The performances such as the operating-voltage and the brightness of three types of devices: single-layer device, double-layer device and three-layer device, were examined. It is demonstrated that the I-V characteristics of single-layer device depends not on the applied voltage but instead on the electric-field strength, and the brightness increased by a factor of 50 and the operating-voltage decreased when introducing one electron transporting layer or an electron transporting layer and one hole blocking layer between the light emitting layer and the negative electrode. In fact, it is imperative to match the energy level of each layer in the electroluminescent device in order to improve its comprehensive performances.
TIAN Wen-jing;HUANG Jin-song;WU Fang;SUN Chang-qing;LIU Xiao-dong;MA Yu-guang;LIU Shi-yong;SHEN Jia-cong. Influence of the Energy Level Matching on the Performances of
Organic/Polymeric Electroluminescent Devices[J]. 中国物理快报, 1996, 13(10): 790-793.
TIAN Wen-jing, HUANG Jin-song, WU Fang, SUN Chang-qing, LIU Xiao-dong, MA Yu-guang, LIU Shi-yong, SHEN Jia-cong. Influence of the Energy Level Matching on the Performances of
Organic/Polymeric Electroluminescent Devices. Chin. Phys. Lett., 1996, 13(10): 790-793.
1996, Vol. 13 
