Fig. 4: 3D simulation model of N+/P-substrate cell with six surface electrode conditions and measurement results.
From: On-chip solar power source for self-powered smart microsensors in bulk CMOS process
a Ring Electrode 1 (RE1), Ring Electrode 2 (RE2), and Center Electrode (CE) individually act as the N+ connecting electrode, while keeping other electrodes floating. b Only RE1 acts as the N+ connecting electrode. c Only RE2 acts as the N+ connecting electrode. d Only CE acts as the N+ connecting electrode. e Simulated I-V characteristic curves for the solar cell with the six conditions of surface electrodes from Fig. 4a–d. f Measurement results of load curve of three types of surface electrodes and Micrographs of the on-chip solar cell with 0.1 mm2 in this case.
