Pei MA, Hong-yun XIE, Yin SHA, Yang XIANG, Liang CHEN, Min GUO, Xian-cheng LIU, Wan-rong ZHANG. Effect of Optical Window on Optical Response Characteristics of SiGe/Si Heterojunction Phototransistor[J]. Acta Photonica Sinica, 2020, 49(8): 0823001
- Acta Photonica Sinica
- Vol. 49, Issue 8, 0823001 (2020)
Fig. 1. Schematic of the SiGe/Si HPT
Fig. 2. Current gain and characteristic frequency of corresponding SiGe/Si HBT
Fig. 3. Initial photogenerated current of SiGe/Si HPT with different optical window position
Fig. 4. Current gain of SiGe/Si HPT with different optical window position
Fig. 5. Collector current of SiGe/Si HPT with different optical window position
Fig. 6. Optical gain of SiGe/Si HPT with different optical window position
Fig. 7. Movement of photo-generated carriers with different optical window on base
Fig. 8. Optical characteristic frequency of SiGe/Si HPT with different optical window positions
Fig. 9. Collector current of SiGe/Si HPT with different optical window areas
Fig. 10. Optical gain of SiGe/Si HPT with different optical window areas
Fig. 11. Emitter junction capacitor and collector junction capacitor of SiGe/Si HPTs with different optical window areas
Fig. 12. Optical characteristic frequency of SiGe/Si HPT with different optical window areas
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Table 1. Material parameters used in the simulation model of SiGe/Si HPT
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Table 2. Optical gain, optical characteristic frequency, and Gopt·fTopt of HPT with different optical window positions
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Table 3. Saturation current, growth rate of saturated current per unit area, optical gain and growth rate of optical gain per unit area of SiGe/Si HPT with different optical window areas
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Table 4. Optical gain, optical characteristic frequency, and Gopt·fTopt of SiGe/Si HPT with different optical window areas
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