Abstract
Photodiodes can be utilized for both image sensing and energy harvesting, but at opposite polarity. There have been numerous research works which have attempted a self-powered imager, by flipping the diodes and harvesting. However, the integration cycle in the image sensing(IS) process is very long and the chip cannot harvest while in this mode. In this letter, an event detector (ED) function is demonstrated in 180 nm, whereby the voltage across the photodiode is monitored during harvesting. If there is a significant change in this voltage, then an event is detected, and the chip can take a picture. Two types of EDs are proposed, which can function at average power as low as 0.2- 1 μ W.
| Original language | American English |
|---|---|
| Pages (from-to) | 62-65 |
| Number of pages | 4 |
| Journal | IEEE Solid-State Circuits Letters |
| Volume | 7 |
| DOIs | |
| State | Published - 1 Jan 2024 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Energy harvester
- event detection
- photovoltaic cell
- power management
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
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