Study of Cathode Luminescence of Organic Lighting Material

• Main Authors: Chi-shing Li, 李祈興
• Other Authors: Meiso Yokoyama
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/65766891170350848172

碩士 === 義守大學 === 電子工程學系碩士班 === 93 === This investigation presents a novel lighting method, the anode plate, which thermally evaporates the Alq3 organic green material onto Ito-glass ( 4000 A ). The cathode involves using the tungsten to heat the metal cathode to achieve emission of the electrons. The electrons are induced from the cathode to the anode, which accelerates with the electron field of vacuum. Additionally, the brightness of luminescence increases as an increasing number of electrons numbers arrive at the anode plate. When the anode voltage is 80V, the luminance reaches 97cd/m2. If the anode voltage exceeds 80V, the electrons move across the Alq3 and the remaining electron kinetic energy to accumulate in the anode plate and release with heat. After the thermal energy causes evaporation of Alq3, the anode plate finally cracks. While attempting to alleviate the damage incurred from electron kinetic energy and the heat from the cathode, this investigation also selects the audion owing to its excellent electron properties from thermal emission in order to place the organic anode plate on top of the gate and the cathode of the audion. Results obtain from luminescence are better than those obtained from an electronic gun, thus enabling a good cathode electron source to produce an adequate number of electrons to reach the anode plate. Furthermore, a higher electric current implies an enhanced luminescence performance of organic lighting materials.