Electroluminescence Spectrum Shift with Switching Behaviour of Diamond Thin Films
WANG Xiao-Ping1,2, WANG Li-Jun1, ZHANG Qi-Ren1, YAO Ning3, ZHANG Bing-Lin3
1College of Science, University of Shanghai for Science and Technology, Shanghai 200093
2Zhengzhou Institute of Aeronautical Industry and Management, Zhengzhou 450005
3Department of Physics, Zhengzhou University, Zhengzhou 450052
Electroluminescence Spectrum Shift with Switching Behaviour of Diamond Thin Films
WANG Xiao-Ping1,2;WANG Li-Jun1;ZHANG Qi-Ren1;YAO Ning3;ZHANG Bing-Lin3
1College of Science, University of Shanghai for Science and Technology, Shanghai 200093
2Zhengzhou Institute of Aeronautical Industry and Management, Zhengzhou 450005
3Department of Physics, Zhengzhou University, Zhengzhou 450052
Abstract： We report a special phenomenon on switching behaviour and the electroluminescence (EL) spectrum shift of doped diamond thin films. Nitrogen and cerium doped diamond thin films were deposited on a silicon substrate by microwave plasma-assisted chemical vapor deposition system and other special techniques. An EL device with a three-layer structure of nitrogen doped diamond/cerium doped diamond/SiO2 thin films was made. The EL device was driven by a direct-current power supply. Its EL character has been investigated, and a switching behaviour was observed. The EL light emission colour of diamond films changes from yellow (590nm) to blue (454nm) while the switching behaviour appears.
2003, Vol. 20 
