Research team of Professor Tae-jun Ha (Electronic Materials),

Selected for Outstanding Poster at the 2024 Spring Conference of the Korean Sensors Society

- Recognized for excellence in the applicability of oxide-TFT as a visible-light photodetector -

The research team of Professor Tae-jun Ha of the Department of Electronic Materials Engineering (Advisor: Tae-jun Ha, integrated masters with PhD students Eun-ha Kim and Sang-jun Park) was selected as the outstanding poster at the 2024 Spring Conference of the Korean Sensors Society held at the Daejeon Convention Center on April 29-30 for presenting 'Visible-light photodetectors based on solution-processed thin-film transistors consisting of metal-oxide films doped with metal ions.'

The team developed an oxide-TFT based photodetector doped with metal ions on IGZO and confirmed enhanced sensing performance in the visible light spectrum compared to conventional IGZO. Oxide semiconductors with a wide band-gap generally absorb in the ultraviolet range, but by controlling the optical properties of IGZO thin films through metal ion doping, the team studied the mechanism for absorbing visible light and realized a TFT-based photodetector. They were recognized for excellence by showing the applicability of oxide-TFTs as visible-light photodetectors. The conference was attended by about 700 people, including experts from overseas in the sensor field from the USA, Europe, Japan, and representative companies and research institutes in domestic sensor industries, and Professor Tae-jun Ha is serving as the director of industry-academia collaboration at the society.

The research team of Professor Tae-jun Ha has published over 100 papers on advanced semiconductor-based sensors and holds about 30 patents.

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(From left in the photo) integrated masters with PhD students in the dept. of Electronic Materials Engineering Eun-ha Kim, Sang-jun Park, and advisor Tae-jun Ha