[15a-WL1_301-1~11] 12.7 Biomedical Engineering and Biochips

11:45 AM - 12:00 PM JST(2:45 AM - 3:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[15a-WL1_301-11] Development of High-Sensitivity Filter-Free Wavelength Sensor with PG-Free Structure

〇Ryoma Mibu¹, Yong-Joon Choi¹, Tomoya Ide¹, Yasuyuki Kimura¹, Yoshiko Noda¹, Daisuke Akai¹, Takeshi Hizawa¹, Toshihiko Noda¹, Kazuhiro Takahashi¹, Kazuaki Sawada¹ (1.Toyohashi Univ. of Tech.)

Keywords:

filter-free wavelength sensor,optical sensor,high sensitivity

The PG structure of the filter-free wavelength sensor developed by our research group had an issue of low light-receiving sensitivity due to light absorption by the Poly-Si electrode material. In this study, we propose a new PG-free structure that generates a potential peak through voltage application to an n-type doping layer and IFD electrode without using a PG electrode. This achieved sensitivity improvements of approximately 2.3 times for 470 nm light and 2.0 times for 660 nm light while maintaining wavelength discrimination capability. Application to high-precision on-site measurements is expected.