The Study of Characteristics for N2 Gas discharge lamp

• Main Authors: Yu-Che Tsai, 蔡宇哲
• Other Authors: Hui-Kai Zeng
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/hhjyrb

碩士 === 中原大學 === 電子工程研究所 === 106 === Flat Electron Emission Lamp (FEEL) is a newly created planar light source, which has the characteristics of transparency, uniform light-emitting and heat-insulating. It uses the effect of electrons to impinge on the anode fluorescent powder under the acceleration of applied electric field to make it emit light , There are two main sources of electron sources, one is the free electrons generated by the free gas, and the other is the secondary electrons generated after the ionized gas atoms hit the cathode material. Therefore, the secondary electron coefficient of the cathode material and the Species will directly affect the light-emitting characteristics of FEEL. In this dissertation, we use Comsol Multiphysics to simulate the gas discharge characteristics of nitrogen. We use a nitrogen gas cylinder at a distance of 15 cm and a radius of 2 cm between the cathode and the anode to simulate and understand the phenomenon in the tube. To discuss the distribution of the negative glow region and the positive column region in the glow discharge, and then to change the pressure and the voltage in the gas discharge tube respectively. It is found that in the range of 0.08-0.15torr, the pressure drop of nitrogen discharge lamp decreases with the increase of atmospheric pressure, the negative glow region will be more and more toward the cathode and the density will increase. Negative glow region maximum concentration changes from 1.10×1015m-3 to 9.87×1015m-3, the concentration increased more than 9 times; voltage changes to 900V ~ 1100V, the molecular kinetic energy changes, after being subjected to intense collision free negative glow zone and positive The distribution and concentration of the column region changed, and the maximum concentration of negative glow region increased from 5.31×1014 m-3 to 1.84×1015 m-3. Hoping to understand through the simulation of long cylindrical gas discharge tube parameters of nitrogen, and may be able to gradually reduce the size of the plane to achieve the specifications of electronic light sources to find the best parameters FEEL and working conditions, to enhance its brightness and lifetime .