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
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 )