Dissertation > Excellent graduate degree dissertation topics show

Characteristics of the organic electroluminescent device doped

Author: SuoFan
Tutor: JiangYaDong
School: University of Electronic Science and Technology
Course: Optical Engineering
Keywords: The organic electroluminescent Doped polymer Energy transfer Spin-coating process Device performance
CLC: TN383.1
Type: Master's thesis
Year: 2008
Downloads: 167
Quote: 0
Read: Download Dissertation

Abstract


Display technology as another hotspot after following the microelectronics and computer pregnant with huge market potential, it continues to progress as a human society, efficient and timely access to information provides a great convenience. As the display new force in the field of organic electroluminescent device (organic light-emitting diode, or OLED) has become one of the hot spots of the domestic and foreign scholars. After nearly two decades of development, OLED from theoretical and experimental breakthrough research progress. This article uses the doped polymer organic electroluminescent light emitting devices (doped-PLED) and its workmanship. In view of the outstanding advantages of polymer materials different from those of small organic molecules and their preparation process low cost and ease of use of spin coating was prepared PLED light-emitting devices based on different polymer doped system, the use of various means of devices photoelectric The performance parameters as well as the surface morphology of the films were tested, analyzed and compared, and the experimental results were theoretically reasonable explanation. Firstly, brief background of the the OLED field of study, such as the development of the history and current status of, and introduced organic electroluminescent principle as the theoretical basis of this research. Designing composite hole transport layer, 8-hydroxyquinoline aluminum (Alq3) as a light-emitting layer-cum-electron-transport layer, double green prepared heterojunction device. The systematic study of dielectric properties of polystyrene (PS) were formed with the small molecule hole transporting material TPD and NPB doped system as a composite hole transport layer, the photoelectric properties of the prepared device. Meanwhile, the conductive polyvinyl carbazole (PVK), respectively the TPD and polymer MEH-PPV constituted doped systems, the the solvent factors spin coating quality of the film formation of the composite organic layer and the luminescent properties of the device. Experimental results show that different doping system composite hole transport layer having a different role in regulating the device on the hole carrier transport, a significant impact on the luminescent properties of the device; certain doping system, there optimal doping concentration than the devices performance to maximize; different solvents on the film-forming properties of the material has an important impact, to further improve the luminescent properties of the device can select a suitable solvent. The design device structure, two novel polyfluorene based polymer luminescent material PFC2 and PFC4 electrical luminescent properties were studied. Found that such novel copolymers polymer not only has excellent hole transporting performance, while having a good blue emission characteristic. Found in the study of this kind of material PVK doped system performance, due to the presence of an electric field modulation of the carrier tunneling effect, showing the color changes from green to blue, using different biasing device The voltage on the light emission chromaticity of the device for adjusting the functions. Meanwhile, there are valid F doping within the device intermolecular? Rster energy transfer device brightness and efficiency were improved to varying degrees, the luminous performance has been significantly improved. Physical doping method, through the effective energy transfer mechanism can improve the brightness and efficiency of the device, and provides a simple and effective way for the device structure optimization and performance improvement. It also shows the, the PFC2 in and PFC4 new Blu-ray polymer material has good application prospects. In summary, the papers from the angle of materials selection and device optimization of doping the concentration matching current conduction, film morphology, energy transfer and process improvement and other factors in the polymer PLED device on the device performance impact on polymer organic electroluminescent light emitting areas of future research work has a strong reference value and significance.

Related Dissertations

  1. Aldehyde hydrazones and pyrazoline compounds Synthesis and Luminescence Properties,O626
  2. Study and Fabrication of High-efficiency Organic Light-emitting Diodes (OLED),TN383.1
  3. The Studies on Synthesis and Synthetic Process of Organic Electroluminescent Materials LMY,TQ242
  4. A Driving Scheme for 7 Inch VGA μc-Si AMOLED,TN873
  5. Based on the spectrum of rare earth doped materials under conversion and Its Application,TM914.4
  6. Based on hydraulic transmission for wind energy machine \,TM614
  7. TBM cutterhead drive system energy technology research,U455.39
  8. Wireless Power Transfer Technology Via Coupled Magnetic Resonances for Embedded Fault Diagnosis System,TM724
  9. Improve carrier injection in OLED and transport efficiency and performance of the device,TN383.1
  10. Dendrimer Generation Effects on the Photophysical Properties of Poly (Aryl Benzyl Ether) Dendrictic Zinc (Ⅱ) Phthalocyanines and the Dendritic Phthalocyanines-loaded Polymeric Nanoparticles,TB383.1
  11. Study on the Photoluminescence Properties of Gd2O3:Sm and Bi3+/Na+ Doped Gd2O3:Sm Nanocrystals,TB383.1
  12. The permeability of basalt reinforcement composites molding process with VARTM Monitoring Technology,TB33
  13. Preparation and properties of the anode load of the IT- SOFC electrolyte film,TM911.4
  14. Preparation and Research on Spectral Properties of Bi-doped Silica-based Glasses,TQ171.1
  15. The Research on Fluorescence Spectrum Imaging and Photobleaching at Single Molecule Level,O657.3
  16. Application of Fluorescence Method in Determination of Nicotine and Lomefloxacin,R927.2
  17. Research on Measuring Technology of High Frequecy Current Based on Wireless Energy Transfer,TM933.1
  18. Coupled Heat Transfer Model and Simulation for Buildings,TU111
  19. Dynamic Characteristics Research on the Valve of Electromagnetic Impactor,TH137.52
  20. Study on Organic Electron-Transporting Materials,TN383.1
  21. Study of Computation Methods for Non-linear Energy Transfer between Wind-generated Waves,P731.22

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