期刊論文
| 學年 | 106 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2017-12-01 |
| 作品名稱 | Quantum Hall Dual-Band Infrared Photodetector |
| 作品名稱（其他語言） | |
| 著者 | Chiu-Chun Tang; K. Ikushima; D. C. Ling, C. C. Chi; Jeng-Chung Chen |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | PHYSICAL REVIEW APPLIED 8(6), 064001(8pages) |
| 摘要 | 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 640–790 cm−1 for the graphene-QHMIR detector and 24–89 cm−1 for the 2DEGQHFIR detector. Moreover, our design integrates a log-periodic antenna with the detector to minimize the device size, while preserving high sensitivity. Our results pave the way for implementing a highly tunable MIR-to-FIR photodetector and a dual-band (MIR-FIR) imaging array. |
| 關鍵字 | Quantum Physics;Semiconductor Physics;optoelectronics |
| 語言 | en_US |
| ISSN | 2331-7019 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 是 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/112434 ) |