Dissertation > Excellent graduate degree dissertation topics show

Effects of Doping Concentration and Hole Blocking Material on the Performance of Phosphorescent OLEDs

Author: YueXin
Tutor: XuZheng
School: Beijing Jiaotong University
Course: Optical Engineering
Keywords: The organic electroluminescent device Phosphorescence Triplet A hole blocking layer
CLC: TN383.1
Type: Master's thesis
Year: 2009
Downloads: 161
Quote: 0
Read: Download Dissertation

Abstract


Organophosphorus photoelectric electroluminescent devices can make full use of the device within the formation of singlet excitons and triplet excitons with high internal quantum efficiency , therefore , the relative fluorescence device , phosphorescent devices have broader application prospects . Phosphorescent devices exist for the current problem , the paper carried out the following research : Ir (ppy) 3 and Ir (piq) 3 two phosphorescent material prepared phosphorescent device electrically luminescent properties , the analysis of the energy transfer in the polymer doped systems ; electron injection barrier impact on device performance and analysis of the electron injection process that may exist within the device . This paper is divided into five chapters , the first chapter is the research progress and the basic principles of of organic Electrophosphorescence devices , the second chapter focuses on the organic electroluminescent material of phosphorescent devices , preparation and testing methods . Chapters III and IV studies focused on the above aspects , the fifth chapter is the conclusion . (1) This thesis uses the two complexes of iridium as a phosphorescent device doped object studied the photoelectric characteristics of the two types of phosphorescent material , to compare the energy transfer in the polymer doped systems , and analysis of the the main source of the electroluminescent system . (2) on the basis of (1) , Ir (ppy) 3 phosphorescent material as a guest material , PVK doped PBD as the total of the host material , use of different hole blocking layer, prepared the doping concentration groups phosphorescent device. By the electrical properties of the test device , the device may exist in the electron injection mode , by comparing the further study of the influence of the doping concentration and the electron injection method for the efficiency of the device to obtain the photometric efficiency 2.9cd / A phosphorescent device .

Related Dissertations

  1. Molecular Recognition Based on β-cyclodextrin and Chemical Modified β-cyclodextrin as Receptor,O636.12
  2. Study and Fabrication of High-efficiency Organic Light-emitting Diodes (OLED),TN383.1
  3. Studies of Novel Polymer Electronic-phosphorescent Materials,O641.4
  4. The Preparation of Diamond Film Used as OLED Field Emission Cathode,TB383.2
  5. The Synthesis of Zn2+ and ClO- Chemosonsers and Its Applications,TP212.2
  6. Two benzoyl methyl sulfoxide, four different second ligand and ternary complexes of rare earth perchlorate Synthesis, characterization , fluorescence and luminescence properties of the Mechanism of,O627.3
  7. Bendable organic electroluminescent device emitting characteristics,TN383.1
  8. Improve carrier injection in OLED and transport efficiency and performance of the device,TN383.1
  9. Study of Cyclodextrin-induced Non-deoxygenated Room Temperature Phosphorescence of Fluorene and Aminofluorene,O657.3
  10. Fabrication and Research of Organic Light-emitting Devices,TN383.1
  11. The Study of Fabrication Technics and Structure Optimization of Organic Light-emitting Devices,TN383.1
  12. Sensors Based on the Nano TiO2/SiO2 Composite Oxide,TP212.2
  13. Cucurbiturils induced room temperature phosphorescence of caffeine and its interaction studies with triphenylmethane compounds,O621.25
  14. Preparation and Research of Red Afterglow Luminescence Material,O611.3
  15. Study of Room Temperature Phosphorescence Sensors and Switches Based on Photo-induced Electron Transfer,TP212
  16. Oculopharyngeal Muscular Dystrophy Pathological and Genotypic Studies in the Chinese Population,R746
  17. Heterocyclic small molecules conjugated Synthesis and Optoelectronic Properties,O626
  18. Spectroscopy Behavior of Halogenated Fluorescein, Lissamine Rhodamine RB-200, Methylene Violet and Their Interaction with Bio-macromolecule,O657.3
  19. An Investigation on the CIDEP of P-benzoquinone、Acetone in Different Systems and the Theoretical Calculation of RTPM,O621
  20. Studies on Solid Substrate Room Temperature Phosphorescence Immunoassay,O657.3

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Semiconductor technology > Light-emitting devices >
© 2012 www.DissertationTopic.Net  Mobile