期刊論文
| 學年 | 103 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2014-11-03 |
| 作品名稱 | Highly tunable quantum Hall far-infrared photodetector by use of GaAs/Al x Ga1 − x As-graphene composite material |
| 作品名稱（其他語言） | |
| 著者 | Tang, Chiu-Chun; Ling, D. C.; Chi, C. C.; Chen, Jeng-Chung |
| 單位 | 淡江大學物理學系 |
| 出版者 | Melville: A I P Publishing LLC |
| 著錄名稱、卷期、頁數 | Applied Physics Letters 105, 181103 |
| 摘要 | We have developed a highly tunable, narrow band far-infrared (FIR) photodetector which utilizes the characteristic merits of graphene and two-dimensional electron gas (2DEG) in GaAs/Al x Ga1 − xAs heterostructure in the Quantum Hall states (QHS). The heterostructure surface is covered with chemical vapor-deposited graphene, which functions as a transparent top-gate to vary the electron density of the 2DEG. FIR response observed in the vicinity of integer QH regime can be effectively tuned in a wide range of 27–102 cm−1 with a bias voltage less than −1 V. In addition, we have found that the presence of graphene can genuinely modulate the photoresponse. Our results demonstrate a promising direction for realizing a tunable long-wavelength FIR detector using QHS in GaAs 2DEG/ graphene composite material. |
| 關鍵字 | |
| 語言 | en_US |
| ISSN | 1077-3118 |
| 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/987654321/102880 ) |