Efficient Electron Injection Mechanism in Organic Light-Emitting Diodes Using an Ultra Thin Layer of Low-Work-Function Metals
スポンサーリンク
概要
- 論文の詳細を見る
To achieve efficient electron injection in organic light-emitting diodes, we examine ultra thin layers (0.50 nm) of the low-work-function metals, Cs (1.9eV), Rb (2.2eV), K (2.3eV), Na (2.4eV), Li (2.9eV), and Ca (2.9eV) capped with aluminum (Al) as a cathode layer. While all the alkali metals show a decrease of driving voltage compared with a single Al cathode, the Cs layer especially shows a significant decrease, and we obtain a high current density of 1.9 A/cm2 at an applied voltage of only 10V by using this layer. We demonstrate that efficient electron injection is achieved when we use a Cs layer with a thickness of less than 3 nm, although electron injection efficiency abruptly decreases when using a Cs layer thicker than 3 nm. From the Cs thickness dependence of current-voltage characteristics, we conclude that Cs atoms form an alloy layer with aluminum atoms at the organic/Al cathode interface, organic layer/Cs:Al/Al, that significantly enhances electron injection compared with that obtained from bulk Cs layers.
- Japan Society of Applied Physicsの論文
- 2003-12-15
著者
-
Adachi Chihaya
Department Of Functional Polymer Science Faculty Of Textile Science And Technology Shinshu Universit
-
Sasabe Hiroyuki
Department Of Drug Metabolism Tokushima Research Institute Otsuka Pharmaceutical Co. Ltd.
-
Maeda Chiharu
Saes Getter Japan Co. Ltd.
-
Oyamada Takahito
Department Of Photonics Materials Science Chitose Institute Of Science And Technology (cist)
-
Maeda Chiharu
Saes Getters Japan Co., Higashi Gotanda, Shinagawa, Tokyo 141-0022, Japan
-
Adachi Chihaya
Department of Applied Chemistry, Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan
関連論文
- Unusual Phosphorescence Characteristics of Ir(ppy)_3 in a Solid Matrix at Low Temperatures
- Carrier-Mediated Uptake of Grepafloxacin, a Fluoroquinolone Antibiotic, by the Isolated Rat Lung Cells
- Blue-Light-Emitting Organic Electroluminescent Devices with Oxadiazole Dimer Dyes as an Emitter
- Injection and Transport of High Current Density over 1000A/cm^2 in Organic Light Emitting Diodes under Pulse Excitation
- Physiologically-based Pharmacokinetic Analysis of Grepafloxacin
- Efficient Electron Injection Characteristics of Tetra-2-pyridinylpyrazine (TPP) in Organic Light Emitting Diodes
- Top Light-Harvesting Organic Solar Cell Using Ultrathin Ag/MgAg Layer as Anode
- High-Efficiency Carrier Injection Characteristics of Dixanthene Derivatives in Organic Light-Emitting Diodes
- Optical and Electrical Properties of Bis(4-(phenylethynyl)phenyl)ethynes and Their Application to Organic Field-Effect Transistors
- Amplified spontaneous emission under optical pumping from an organic semiconductor laser structure equipped with transparent carrier injection electrodes
- Efficient Electron Injection Characteristics of Triazine Derivatives for Transparent OLEDs (TOLEDs)
- Organic Light Emitting Diodes Using Triphenylene Derivatives as a Hole Transport Material
- Submicrometer-Sized Organic Light Emitting Diodes with a Triphenylamine-Containing Polycarbonate as a Guest Molecule in a Polymer Blend
- Organic Electroluminescent Device with a Three-Layer Structure : Chemistry (incl. physical process)
- Electroluminescence in Organic Films with Three-Layer Structure : Chemistry (incl, physical process)
- 3,6-Diarylcarbazole Derivatives as a Host Material in Organic Electrophosphorescent Diodes
- Roll-Off Characteristics of Electroluminescence Efficiency of Organic Blue Electrophosphorescence Diodes
- Analysis of Carrier Traps in Continuously Operated 4,4$'$-bis[N-(1-naphthyl)-N-phenyl-amino]biphenyl/tris(8-hydroxyquinoline)aluminum-Based Organic Light-Emitting Diodes by Thermally Stimulated Current Measurement
- Novel Electron-Transporting Carbazolylphenylquinolines for Phosphorescent Organic Light-Emitting Diodes
- Low-Damage Indium Tin Oxide Formation on Organic Layers Using Unique Cylindrical Sputtering Module and Application in Transparent Organic Light-Emitting Diodes
- Control of Crystal Morphology of Aromatic Electron Donors and Acceptors for Organic Electronics
- Efficient Electron Injection Mechanism in Organic Light-Emitting Diodes Using an Ultra Thin Layer of Low-Work-Function Metals
- Mixing Effect of Gold and Silver Nanoparticles on Enhancement in Performance of Organic Thin-Film Solar Cells
- Organic Single-Crystal Transistors Based on π-Extended Heteroheptacene Microribbons
- Optical and Electrical Properties of Bis(4-(phenylethynyl)phenyl)ethynes and Their Application to Organic Field-Effect Transistors