The 26th International Display Workshops (IDW '19)

Presentation information

Oral Presentation

[AMD4] Emerging TFTs

Thu. Nov 28, 2019 9:00 AM - 10:20 AM Mid-sized Hall B (1F)

Chair: Hyun Jae Kim (Yonsei Univ.)
Co-Chair: Yosei Shibata (Tohoku Univ.)

10:05 AM - 10:20 AM

[AMD4-5L] Improving Performances of Oxide Phototransistors Using a Mechano-Chemically Treated Porous Structure as The Visible Light Absorption Layer

*I Sak Lee1, Bennet Nii Akwei Brown2, Dongwoo Kim1, Sujin Jung1, Byung Ha Kang1, Hyun Jae Kim1 (1. Yonsei University (Korea), 2. Columbia University (United States of America))

Keywords:Oxide TFT, Photosensor, Visible light, Mechano-chemical treatment

In this research, we suggest indium gallium zinc oxide (IGZO) thin film transistors (TFTs) for detection of visible light using a porous oxide layer (POL) resulting from mechano-chemical treatment. When compared with conventional IGZO TFT, the IGZO TFT with the POL exhibits photoresponsivity of 341.32 A/W, photosensitivity of 1.10ⅹ106, and detectivity of 4.54ⅹ1010 Jones under 532 nm light illumination.