[22p-P01-1~18] 3.12 Nanoscale optical science and near-field optics

[22p-P01-15] Responsivity of Bismuth Telluride Nanohole Thin-film Photodetector

〇(B)Toshinari Odaka¹, Wakana Kubo¹ (1.Tokyo Univ. of Agri. and Technol.)

Keywords:photodetector, thermoelectric conversion, plasmon

We examined the responsivity of the bismuth telluride nanohole thin-film photodetector. This photodetector detects the incident light through plasmon local heat generation on nanoholes and thermoelectric conversion. The bismuth telluride nanohole thin-film photodetector showed two times higher responsivity than a control photodetector without nanoholes. We concluded that plasmon local heat generation on the nanoholes enhanced the responsivity of the photodetector.