The 70th JSAP Spring Meeting 2023

Presentation information

Oral presentation

13 Semiconductors » 13.7 Compound and power devices, process technology and characterization

[17a-A301-1~9] 13.7 Compound and power devices, process technology and characterization

Fri. Mar 17, 2023 9:00 AM - 11:30 AM A301 (Building No. 6)

Taketomo Sato(Hokkaido Univ.)

9:00 AM - 9:15 AM

[17a-A301-1] Photocurrent induced by Franz-Keldysh effect in β-Ga2O3 Schottky barrier diode

Takuya Maeda1, Kentaro Ema2, Kohei Sasaki2 (1.The University of Tokyo, EEIS, 2.Novel Crystal Technology, Inc.)

Keywords:Franz-Keldysh effect, Gallium Oxide, Photocurrent

半導体に高電界を印加すると電子・正孔の波動関数が禁制帯中に浸み出し,基礎吸収端より短波長側で吸収係数の振動,長波長側で裾引きが起こる.これはFranz-Keldysh (FK)効果として知られている.本研究では,β-Ga2O3ショットキーバリアダイオードに基礎吸収端より長波長の単色光を照射し,光電流の逆バイアス電圧依存性・波長依存性を調べ,FK効果に起因した光吸収の測定・解析に成功したので報告する.