Thu Sep 26 15:04:27 UTC 2024: ## City University of Hong Kong Achieves Breakthrough in Semiconductor Technology

**Hong Kong, China** – Researchers at City University of Hong Kong (CityUHK) have achieved a significant breakthrough in semiconductor technology by developing a new material with enhanced hole mobility. This innovation has the potential to revolutionize the development of complementary devices and circuits.

The team, led by Professor Johnny Ho, employed an innovative blending strategy to create a new compound called tellurium-selenium-oxygen (TeSeO). This compound is comprised of various p-type inorganic materials, each contributing to the unique properties of the final product.

“TeSeO materials have shown remarkable adaptability and reliability, offering a promising solution to the challenges faced by current semiconductors,” stated Professor Ho. The new material has already proven its potential by producing high-performance thin-film transistors and flexible photodetectors that surpass conventional p-type semiconductors in terms of durability and performance.

One of the key challenges in semiconductor research is the difficulty in adjusting the bandgap of conventional p-type semiconductors. The researchers tackled this issue by strategically combining different types of inorganic materials, allowing them to precisely engineer the band structure of TeSeO. This resulted in tunable bandgaps ranging from 0.7 to 2.2 eV, opening up a wide range of potential applications.

The tunable bandgaps of TeSeO thin films cover a broad spectrum of wavelengths, including ultraviolet, visible, and short-wave infrared regions. This versatility makes it suitable for various applications, such as high-mobility p-channel transistors, solar cells, and wideband photodetectors.

“In the future, we plan to further explore and optimize these applications to harness the full potential of TeSeO materials,” said Professor Ho. This breakthrough could pave the way for more efficient and cost-effective electronic devices and circuits, contributing significantly to the advancement of semiconductor technology.

The research was published in the journal Nature Communications.

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