Li Chia-Hung, Liu Ming-Chung, Chiang Chang-Lin, Li Jung-Yu, Chen Shih-Pu, Hsieh Tai-Chiung, Chou Yen-I, Lin Yi-Ping, Wang Po-Hung, Chun Ming-Shin, Zeng Hui-Kai, Juang Jenh-Yih
Green Energy & Environment Research Laboratories, Industrial Technology Research Institute, 195 Sec 4, Chung-Hsin Road, Chutung 310, Taiwan.
Opt Express. 2011 Jan 3;19 Suppl 1:A51-6. doi: 10.1364/OE.19.000A51.
The gas discharge and photo-luminance properties of a planar lighting source featuring highly uniform light emission and mercury-free design were studied. The current density-voltage characteristics and the associated gas discharge of the devices operating with the values of the ratio of electric field to gas pressure (E/p) between 4.3 kV/Torr-cm and 35.7 kV/Torr-cm indicate that the width of the cathode fall extends over the entire gap between the two electrodes and the device is mostly in the obstructed discharge regime. The optical emission analysis confirmed the electron collision-induced gas emissions and strong effect of gas pressure on the phosphor emission when operated at constant current density, both are indicative of the primary roles played by the electron energy.
