教師資料查詢 | 類別: 期刊論文 | 教師: 林大欽 LING, DAH-CHIN (瀏覽個人網頁)

標題:Highly tunable quantum Hall far-infrared photodetector by use of GaAs/Al x Ga1 − x As-graphene composite material
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
語言英文(美國)
ISSN1077-3118
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式,電子版,紙本
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