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Capturing Light: Ergonomic Photodetector for the Trillion-Sensor Era

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The new photodetector chip.

Incheon National University professor Sung Hun Jin said, ""Our photodetector applies a different approach with regard to the light-to-frequency conversion. We have used components that are light-dependent and not voltage-dependent."

Credit: Pixabay

Researchers at South Korea's Incheon National University (INU) have demonstrated a highly efficient system of photodetectors that can surmount the constraints of conventional light-to-frequency conversion circuits (LFCs).

The researchers developed complementary photosensitive inverters with p-type single-walled carbon nanotubes and n-type amorphous indium-gallium-zinc-oxide thin film transistors.

The LFC combines superior chip area efficiency with a compact form factor, for use in flexible electronic devices.

Experiments revealed high tunability and responsiveness over a broad optical range, as well as potentially large-area scalability and easy integration in state-of-the-art silicon wafer-based chips.

INU's Sung Hun Jin said, "LFCs based on low dimensional semiconductors will become one of the core components in the trillion sensors area. Our LFC scheme will find application in medical SpO2 detection, auto-lighting in agriculture, or in advanced displays for virtual and augmented reality."

From Incheon National University (South Korea)
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Abstracts Copyright © 2021 SmithBucklin, Washington, DC, USA


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