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[×ÊÔ´] Adv. Mater.×îÐÂ×ÛÊö£º¹âÃôʯīϩ¾§Ìå¹Ü

Photosensitive Graphene Transistors
Jinhua Li , Liyong Niu, Zijian Zheng, and  Feng Yan*
J. H. Li, Prof. F. Yan
Department of Applied Physics
The Hong Kong Polytechnic University
Hong Kong,    China   
E-mail:  apafyan@polyu.edu.hk   
L. Y. Niu, Prof. Z. J. Zheng
Nanotechnology Center
Institute of Textiles and Clothing
The Hong Kong Polytechnic University
Hong Kong,   China   

High performance photodetectors play important roles in the development
of innovative technologies in many fi elds, including medicine, display and
imaging, military, optical communication, environment monitoring, security
check, scientifi c research and industrial processing control. Graphene, the
most fascinating two-dimensional material, has demonstrated promising
applications in various types of photodetectors from terahertz to ultraviolet,
due to its ultrahigh carrier mobility and light absorption in broad wavelength
range. Graphene fi eld effect transistors are recognized as a type of excellent
transducers for photodetection thanks to the inherent amplifi cation function
of the transistors, the feasibility of miniaturization and the unique properties
of graphene. In this review, we will introduce the applications of graphene
transistors as photodetectors in different wavelength ranges including tera-
hertz, infrared, visible, and ultraviolet, focusing on the device design, physics
and photosensitive performance. Since the device properties are closely
related to the quality of graphene, the devices based on graphene prepared
with different methods will be addressed separately with a view to demon-
strating more clearly their advantages and shortcomings in practical applica-
tions. It is expected that highly sensitive photodetectors based on graphene
transistors will fi nd important applications in many emerging areas especially
fl exible, wearable, printable or transparent electronics and high frequency
communications.Adv. Mater.×îÐÂ×ÛÊö£º¹âÃôʯīϩ¾§Ìå¹Ü


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  • 2014-04-09 17:14:52, 4.23 M

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