Highly efficient organic light-emitting diodes based on new donor-acceptor small molecules

목차 (Table of Contents)

• Ⅰ. INTRODUCTION = 1
• Ⅱ. THEORY = 5
• Ⅱ-1. The principles of OLEDs = 5
• Ⅱ-1-1. What is OLEDs = 5
• Ⅱ-1-2. Operating principle of OLEDs = 6
• Ⅱ-2. Photoluminescence (PL) = 8
• Ⅱ-2-1. Definition of Photoluminescence = 8
• Ⅱ-2-2. Energy level diagrams for photoluminescence molecules = 9
• Ⅱ-2-3. Florescence and phosphorescence = 10
• Ⅱ-2-4. Internal Conversion and Intersystem Crossing = 13
• Ⅱ-3. Electroluminescence (EL) = 15
• Ⅱ-3-1. Definition of Electroluminescence = 15
• Ⅱ-3-2. Wavelength of emitted light = 16
• Ⅱ-3-3. Electroluminescence efficiency = 17
• Ⅱ-4. Organic and polymer materials for OLEDs = 20
• Ⅱ-4-1. Polymers = 24
• Ⅱ-4-2. Dendrimers = 24
• Ⅱ-4-2-1. Use in OLED = 26
• Ⅱ-4-3. Small moleculars = 27
• Ⅱ-4-3-1. Tris(8-Hydroxyquinoline)Aluminum (Alq3) = 27
• Ⅱ-4-3-2. Blue-emitting materials = 29
• Ⅱ-4-3-3. Yellow-emitting materials = 30
• Ⅱ-4-3-4. Red-emitting materials = 30
• Ⅱ-4-4. The roles of each layers = 31
• Ⅱ-3. OLEDs driving scheme = 41
• Ⅱ-3-1. Passive matrix = 41
• Ⅱ-3-2. Active matrix = 43
• Ⅱ-3-3. Full color OLED display = 44
• Ⅱ-3-3-1. White OLED = 44
• Ⅱ-3-4. Top emission = 45
• Ⅲ. EXPERIMENT = 47
• Ⅲ-1. Instruments = 47
• Ⅲ-2. Reagents and solvents = 49
• Ⅲ-3. Synthesis of MQPTZ and PQPTZ = 50
• Ⅲ-3-1. Synthesis of N-phenyl-2-acetylphenothiazine = 50
• Ⅲ-3-2. Synthesis of MQPTZ = 53
• Ⅲ-3-3. Synthesis of PQPTZ = 56
• Ⅲ-3-4. Assembling of OLED device with emitting materials = 59
• Ⅲ-3-4-1. Photo processing = 59
• Ⅲ-3-4-2. OLED devices for the emitting materials = 60
• Ⅳ. RESULTS AND DISCUSSION = 62
• Ⅳ-1. Optical properties = 62
• Ⅳ-1-1. UV-vis absorbance = 62
• Ⅳ-1-2. PL (Photoluminescence) emission = 63
• Ⅳ-2. Electro-chemical properties = 64
• Ⅳ-3. Properties of OLED devices = 67
• Ⅳ-3-1. EL spectrum = 67
• Ⅳ-3-2. I-V (current-voltage) characteristics = 68
• Ⅳ-3-3. Luminance-voltage relations = 69
• Ⅳ-3-4. Luminance efficiency = 70
• Ⅳ-3-5. External quantum efficiency = 71
• Ⅳ-3-6. Power efficiency = 72
• Ⅴ. CONCLUSION = 73
• Ⅵ. REFERENCES = 75