Differences in ac-analysis of Si/Si/sub 1-x/Ge/sub x/ HBTs using drift-diffusion and hydrodynamic based device simulators

2002 ◽  
Author(s):  
H. Forster ◽  
D. Nuernbergk ◽  
F. Schwierz ◽  
D. Schipanski
Keyword(s):  
Drift Diffusion

Terahertz Radiators Based on Si~3C-SiC MQW IMPATT Diodes

2020 ◽  
Vol 10 (4) ◽  
pp. 501-506
Author(s):  
Monisha Ghosh ◽  
Arindam Biswas ◽  
Aritra Acharyya
Keyword(s):  
High Frequency ◽  
Multiple Quantum Well ◽  
Multiple Quantum ◽  
Noise Performance ◽  
Rf Power ◽  
Drift Diffusion ◽  
Frequency Bands ◽  
Atmospheric Window ◽  
Lower Noise ◽  
Impatt Diodes

Aims:: The potentiality of Multiple Quantum Well (MQW) Impacts Avalanche Transit Time (IMPATT) diodes based on Si~3C-SiC heterostructures as possible terahertz radiators have been explored in this paper. Objective:: The static, high frequency and noise performance of MQW devices operating at 94, 140, and 220 GHz atmospheric window frequencies, as well as 0.30 and 0.50 THz frequency bands, have been studied in this paper. Methods: The simulation methods based on a Self-Consistent Quantum Drift-Diffusion (SCQDD) model developed by the authors have been used for the above-mentioned studies. Results: Thus the noise performance of MQW DDRs will be obviously better as compared to the flat Si DDRs operating at different mm-wave and THz frequencies. Conclusion:: Simulation results show that Si~3C-SiC MQW IMPATT sources are capable of providing considerably higher RF power output with the significantly lower noise level at both millimeter-wave (mm-wave) and terahertz (THz) frequency bands as compared to conventional flat Si IMPATT sources.

Revealing the mechanism of carrier transport in host-guest systems of organic materials with a modified Poisson and drift-diffusion solver

2020 ◽  
Vol 4 (12) ◽  
Author(s):  
Jun-Yu Huang ◽  
Jiun-Haw Lee ◽  
Yuh-Renn Wu ◽  
Tse-Ying Chen ◽  
Yu-Cheng Chiu ◽  
...  
Keyword(s):  
Carrier Transport ◽  
Organic Materials ◽  
Drift Diffusion

scholarly journals Coupled 3D master equation and 1D drift‐diffusion approach for advanced OLED modeling

2020 ◽  
Vol 28 (5) ◽  
pp. 440-449 ◽  
Author(s):  
Simon Zeder ◽  
Christoph Kirsch ◽  
Urs Aeberhard ◽  
Balthasar Blülle ◽  
Sandra Jenatsch ◽  
...  
Keyword(s):  
Master Equation ◽  
Drift Diffusion
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