關鍵字查詢 | 類別:期刊論文 | | 關鍵字:Quantum Hall Dual-Band Infrared Photodetector

[第一頁][上頁]1[次頁][最末頁]目前在第 1 頁 / 共有 01 筆查詢結果
序號 學年期 教師動態
1 106/1 物理系 林大欽 教授 期刊論文 發佈 Quantum Hall Dual-Band Infrared Photodetector , [106-1] :Quantum Hall Dual-Band Infrared Photodetector期刊論文Quantum Hall Dual-Band Infrared PhotodetectorChiu-Chun Tang; K. Ikushima; D. C. Ling, C. C. Chi; Jeng-Chung ChenQuantum Physics;Semiconductor Physics;optoelectronicsPHYSICAL REVIEW APPLIED 8(6), 064001(8pages)We have developed a hybrid quantum Hall midinfrared (QHMIR)–quantum Hall far-infrared (QHFIR) photodetector by the use of graphene-GaAs=ðAl; GaÞAs–layered composite material. Both MIR and FIR photoresistance are observed in a single chip by utilizing cyclotron resonance in the quantum Hall regimes of graphene and two-dimensional electron gas (2DEG) in GaAs=ðAl; GaÞAs heterostructure, respectively. By cooperatively operating 2DEG as a back-gate electrode to change the carrier density of graphene or graphene as a top-gate electrode to modulate the carrier density of 2DEG with an applied gate voltage less than 1 V and applying the magnetic field to tune cyclotron resonance, we achieve a wide frequency selectivity, covering 640–7
[第一頁][上頁]1[次頁][最末頁]目前在第 1 頁 / 共有 01 筆查詢結果