Wenjing XU, Jie CHEN, Zhangqu KUANG, Li ZHOU, Ming CHEN, Chengbin ZHANG. Design and Experiment of Low-voltage 4T-PPD Active Pixel[J]. Acta Photonica Sinica, 2022, 51(5): 0523001
- Acta Photonica Sinica
- Vol. 51, Issue 5, 0523001 (2022)
Fig. 1. 4T-PPD active pixel structure and the potential distribution of the 4T-PPD photogenerated electrons
Fig. 2. Relationship between the length LAB of the distance without fringing field and the photogenerated charge to the full-well charge Qn/Qn，sat
Fig. 3. Layouts of two shaped PPDs
Fig. 4. Chip photograph and layout
Fig. 5. Measured photoelectric response curves and lag curves of two shaped PPDs
Fig. 6. Measured dark currents and QE curves of two shaped PPDs
Fig. 7. Measured sensitivity curves of five-finger shaped PPD with different transfer time
Fig. 8. Measured conversion gain of the five-finger shaped PPD
Fig. 9. Captured images from the five-finger shaped chip in high and low light
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Table 1. Comparison of the proposed five-finger shaped PPD with other references
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