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- Title
新型非均匀沟道掺杂恒流二极管结构及输出特性研究.
- Authors
王智永; 周 波
- Abstract
According to the electrical parameters and measured output characteristic curves, the output characteristics and structural parameters of the horizontal channel current regulative diode were studied by using Silvaco-TCAD semiconductor device simulation software. In order to solve the contradiction between the constant current value ( IH ), clipping voltage (VP), blocking voltage ( VR ) and the change rate of high and low temperature of constant current value on the channel structure parameters of conventional current regulative diode, a novel current regulative diode with non - uniform doped channel was proposed, and the channel structure parameters of the new current regulative diode were optimized. The results show that although the channel structure with high doping concentration and narrow width is beneficial to reduce the high and low temperature variation rate of the constant current value of the current regulative diode, the blocking voltage of the device is difficult to meet the requirements of the index for the conventional current regulative diode. The proposed non-uniform doping channel structure can optimize the electric field distribution in and at the edge of the channel. Meanwhile, the lower doping concentration at the top of the channel can reduce the peak electric field intensity and increase the blocking voltage of the current regulative diode significantly. Under the narrow channel condition, increasing doping concentration at the bottom of the channel makes the constant current value meet the requirement of the index and reduces the high and low temperature variation rate of the constant current value significantly.
- Publication
Electronic Components & Materials, 2021, Vol 40, Issue 7, p675
- ISSN
1001-2028
- Publication type
Article
- DOI
10.14106/j.cnki.1001-2028.2021.0091