DGIST Scholar: Novel electron transporting materials for all solution-processed blue phosphorescent OLED

Department of Energy Science and Engineering Theses Master

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Novel electron transporting materials for all solution-processed blue phosphorescent OLED

Title: Novel electron transporting materials for all solution-processed blue phosphorescent OLED

Description: OLED, Phosphorescence, Solution-processed, Electron transporting material

Table Of Contents: Ⅰ. INTRODUCTION 1

ⅠⅠ. THEORICAL BACKGROUNDS
2.1 Organic Light-Emitting diode (OLED) 4
2.1.1 Structure and Working Mechanism of OLED 4
2.1.2 Phosphorescent OLED (PhOLED) 5
2.1.3 Host : Dopant System 6
2.2 Organic Materials for Blue PhOLED 7
2.2.1 Hole Transporting Materials 8
2.2.2 Electron Transporting Materials 9
2.2.3 Host Materials 9
2.2.4 Suzuki Reaction 10
2.3 Fabrication Process of OLED 13
2.3.1 Physical Vapor Deposition 13
2.3.2 Vacuum Thermal Evaporation 13
2.3.3 Solution Process 14

ⅠⅠⅠ. EXPERIMENTAL
3.1 Measurement and Characterization 16
3.2 SynTheses 16
3.3 Fabrication of Device 26
3.3.1 Fabrication of Electron-only Device 26
3.3.2 Fabrication of Blue PhOLED 26

ⅠV. RESULT AND DISCUSSION
4.1 Design of ETMs 29
4.2 Thermal Properties 31
4.3 Optical Properties 33
4.4 Electrochemical Properties 35
4.5 UPS Analysis 36
4.6 Electron Mobilities 39
4.7 Blue PhOLED Performance 41

V. CONCLUSION 46
REFERENCES 47
SUMMARY 55