| Preface | p. v |
| Contributors | p. xv |
| Introduction to Organic Light-Emitting Devices | p. 1 |
| Introduction | p. 1 |
| Basic Electronic Structure and Dynamics of [pi]-Conjugated Materials | p. 5 |
| Basic Structure of OLEDs | p. 9 |
| OLED Fabrication Procedures | p. 10 |
| Thermal Vacuum Evaporation | p. 10 |
| Wet-Coating Techniques | p. 11 |
| Materials for OLEDs & PLEDs | p. 12 |
| Anode Materials and HTLs or Buffers | p. 12 |
| Small Electron-Transporting and Emitting Molecules | p. 17 |
| Small Molecular Guest Dye Emitters | p. 18 |
| White OLEDs | p. 18 |
| Phosphorescent Small Molecules & Electrophosphorescent OLEDs | p. 19 |
| Fluorescent Polymers | p. 19 |
| Cathode & Organic/Cathode Buffer Materials | p. 21 |
| Basic Operation of OLEDs | p. 22 |
| Carrier Transport in OLEDs | p. 23 |
| Polaron vs Disorder Models for Carrier Hopping | p. 24 |
| Long-Range Correlations | p. 25 |
| Carrier Injection | p. 26 |
| Space-Charge Limited Versus Injection-Limited Current Mechanisms | p. 28 |
| The Efficiency of OLEDs | p. 29 |
| Degradation Mechanisms | p. 31 |
| Outlook for OLEDs | p. 33 |
| References | p. 34 |
| Molecular LED: Design Concept of Molecular Materials for High-Performance OLED | p. 43 |
| Introduction | p. 43 |
| OLED Development from the 1960s to the 1980s | p. 43 |
| Working Mechanisms of OLED | p. 45 |
| Charge Carrier Injection and Transport | p. 46 |
| Carrier Recombination and Emission Process | p. 50 |
| Estimation of External and Internal Quantum Efficiency | p. 50 |
| Design of Multilayer Structures | p. 53 |
| Molecular Materials for OLED | p. 55 |
| Hole-Transport Material | p. 55 |
| Electron-Transport Material | p. 58 |
| Emitter Material | p. 60 |
| Dopant Material | p. 60 |
| Molecular Tuning for High EL Efficiency | p. 62 |
| Molecular Tuning for a High EL Durable OLED | p. 63 |
| Future Possibilities of OLED | p. 64 |
| Conclusion | p. 65 |
| References | p. 65 |
| Chemical Degradation and Physical Aging of Aluminum(III) 8-Hydroxyquinoline: Implications for Organic Light-Emitting Diodes and Materials Design | p. 71 |
| Introduction | p. 71 |
| Chemical Stability of OLED Materials | p. 72 |
| Thermal Hydrolysis of Alq[subscript 3] | p. 72 |
| Electrochemical Degradation of Alq[subscript 3] and Hq | p. 78 |
| Morphological Stability of Organic Glasses in LEDs | p. 85 |
| Crystallization of Alq[subscript 3] | p. 86 |
| Guidelines for Amorphous Materials Selection | p. 89 |
| Crystallization and Aging of AlMq[subscript 3] and Alq[subscript 3]/AlMq[subscript 3] blends | p. 91 |
| The Effect of Aging Processes on OLED Performance | p. 95 |
| References | p. 98 |
| Organic Microcavity Light-Emitting Diodes | p. 103 |
| Introduction | p. 103 |
| Types of Microcavities | p. 104 |
| Planar Microcavity LEDs | p. 106 |
| Single Mode and Multimode Planar Microcavity LEDs | p. 110 |
| Intensity and Angular Dependence in Planar Microcavities | p. 114 |
| Materials for Organic Microcavity LED Displays | p. 121 |
| Summary | p. 123 |
| References | p. 124 |
| Light-Emitting Diodes Based on Poly(p-phenylenevinylene) and Its Derivatives | p. 127 |
| Introduction | p. 127 |
| The Electronic Structure of PPV | p. 128 |
| Synthesis of PPV and Derivatives | p. 132 |
| Single-Layer LEDs | p. 134 |
| Multiple-Layer Polymer LEDs | p. 138 |
| Transport and Recombination in Polymer LEDs | p. 141 |
| Optical Properties of Polymer LEDs | p. 143 |
| Novel LED Structures | p. 146 |
| Prospects for Applications of PPV-Based LEDs | p. 149 |
| Conclusions | p. 150 |
| References | p. 150 |
| Polymer Morphology and Device Performance in Polymer Electronics | p. 155 |
| Introduction | p. 155 |
| The Control of Polymer Morphology | p. 157 |
| The Polymer-Polymer Interactions in Solutions | p. 157 |
| The Morphology Control of Polymer Thin Films via the Spin-Coating Process | p. 161 |
| The Control of Device Performance via Morphology Control | p. 166 |
| Conductivity of the Polymer Film | p. 166 |
| Charge-Injection Energy Barriers | p. 167 |
| The Turn-on Voltages | p. 172 |
| The Emission Spectrum of the Device | p. 176 |
| The Device Quantum Efficiency | p. 180 |
| Conclusions | p. 182 |
| The Solvation Effect and Polymer Aggregation | p. 182 |
| The Device Emission Color and the Quantum Efficiency | p. 182 |
| The Conductivity of the Film | p. 182 |
| The Turn-on Voltage of the PLED Device | p. 183 |
| References | p. 183 |
| On the Origin of Double Light Spikes from Polymer Light-Emitting Devices | p. 187 |
| Introduction | p. 187 |
| Experimental | p. 188 |
| Results and Analysis | p. 190 |
| Discussion | p. 199 |
| Conclusions | p. 202 |
| References | p. 203 |
| Electroluminescence with Poly(para-phenylenes) | p. 205 |
| Introduction | p. 205 |
| Physical Properties of Oligophenyls and Polyphenyls | p. 206 |
| Processing and Stability | p. 206 |
| Geometric Arrangement of Para-phenylenes | p. 208 |
| Absorption Properties | p. 209 |
| Emission Properties | p. 214 |
| Excited States | p. 214 |
| Charge Transport | p. 217 |
| Electroluminescence | p. 220 |
| Single-Layer LED Based on PPP-Type Polymers | p. 220 |
| Emission Colors | p. 224 |
| LEDs Based on Multilayer Structures | p. 225 |
| LEDs Based on Polymer Blends | p. 229 |
| Light-Emitting Electrochemical Cells Based on PPPs | p. 233 |
| Conclusions | p. 238 |
| References | p. 238 |
| Direct and Alternating Current Light-Emitting Devices Based on Pyridine-Containing Conjugated Polymers | p. 245 |
| Introduction | p. 245 |
| Experiments | p. 247 |
| Results and Discussion | p. 249 |
| Summary and Conclusion | p. 261 |
| References | p. 262 |
| Polyfluorene Electroluminescence | p. 265 |
| Introduction | p. 265 |
| Synthesis and Characterization of Polyfluorene | p. 266 |
| Polyfluorene Synthesis | p. 266 |
| Optical and Physical Characterization | p. 268 |
| Electronic Characterization | p. 270 |
| Electroluminescence | p. 275 |
| Polyfluorene Electroluminescence | p. 275 |
| Fluorene-Based Copolymers | p. 282 |
| Doped Polyfluorene Light-Emitting Diodes | p. 288 |
| Concluding Remarks | p. 298 |
| References | p. 299 |
| Index | p. 303 |
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