Organic Light Emitting Diode (OLED)

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Presentation transcript:

Organic Light Emitting Diode (OLED) HIL : Hole Injection Layer EML : Emissive Layer HTL : Hole Transport Layer ETL : Electron Transport Layer EIL : Electron Injection Layer

Organic Light Emitting Diode (OLED)

Organic Light Emitting Diode (OLED) 1987 Kodak Double-layer device 1988 Kodak Doping technology 1990 Cambridge ITO/PPV/Al 1991 Pioneer Quinacridone doping Asahi Chemical Doped polymer Pioneer Al/Li cathode (Uniax) PET/PANI/MEH-PPV/Ca 1993 Osaka Star-burst molecule Itemistu-K CCM MCC HTL doping TDK Poly-Si TFT Kodak Ultra-thin LiF layer at cathode interface Philips PEDOT/PSS buffer Princeton U. SOLED Seiko-Epson Ink-Jet Princeton U. Triplet Sanyo-Kodak Seiko-Epson Ink-Jet full color Yamagata U. Triplet : 46 lm/W 2001 Sony 13” full color OLED with TFT

Electronic States in Molecules

Electronic Structure of Organic Semiconductor

Basic Quantum Mechanics

The πElectron as a Particle in a Box

The πElectron as a Particle in a Box

Electronic Structure of Organic Semiconductor

Electronic States of Organic Semiconductor

Electronic States of Organic Semiconductor

Electronic States of Organic Semiconductor

Electronic States of Organic Semiconductor

Electronic States of Organic Semiconductor

Electronic States of Organic Semiconductor

Electronic States of Organic Semiconductor

Singlet and Triplet States

The H2 Molecule : Singlet and Triplet States

Luminescence in Molecules and Crystals

Luminescence in Molecules and Crystals

Radiative Transitions - Efficiency

Radiative Transitions - Efficiency

Optical Spectra in Molecular Solids

Rotations and Vibrations

Vibrations

Einstein Transition Probabilities

Einstein Transition Probabilities

Moments of Inertia of Differently Shaped Molecules

Electronic Transitions in Molecules

Examples of Molecular Absorption & Luminescence

Electronic Processes in Molecules

Combinations of Two Fermions

Born-Oppenheimer Approximation

Born-Oppenheimer Approximation (cont.)

Generation of Excitons

Semiconductors – Carrier Generation

Emission Efficiency - External

Electronic Processes in Molecules

Effect of Dopants on Luminescence Spectrum

Nonradiative Energy Transfer

Radiative Energy Transfer

Förster Transfer – Rate Equations

Dexter Transfer

Dexter Transfer

Nonradiative Energy Transfer

Diffusion of Excitons

Luminous Efficiency of Luminescent Sources

Electroluminescence

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