A Broadband Fluorographene Photodetector

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 29(2017), 22 vom: 01. Juni
1. Verfasser:	Du, Sichao (VerfasserIn)
Weitere Verfasser:	Lu, Wei, Ali, Ayaz, Zhao, Pei, Shehzad, Khurram, Guo, Hongwei, Ma, Lingling, Liu, Xuemei, Pi, Xiaodong, Wang, Peng, Fang, Hehai, Xu, Zhen, Gao, Chao, Dan, Yaping, Tan, Pingheng, Wang, Hongtao, Lin, Cheng-Te, Yang, Jianyi, Dong, Shurong, Cheng, Zhiyuan, Li, Erping, Yin, Wenyan, Luo, Jikui, Yu, Bin, Hasan, Tawfique, Xu, Yang, Hu, Weida, Duan, Xiangfeng
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2017
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article broadband fluorographene mid-infrared photodetectors ultraviolet

Beschreibung
Zusammenfassung:	© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. High-performance photodetectors operating over a broad wavelength range from ultraviolet, visible, to infrared are of scientific and technological importance for a wide range of applications. Here, a photodetector based on van der Waals heterostructures of graphene and its fluorine-functionalized derivative is presented. It consistently shows broadband photoresponse from the ultraviolet (255 nm) to the mid-infrared (4.3 µm) wavelengths, with three orders of magnitude enhanced responsivity compared to pristine graphene photodetectors. The broadband photodetection is attributed to the synergistic effects of the spatial nonuniform collective quantum confinement of sp2 domains, and the trapping of photoexcited charge carriers in the localized states in sp3 domains. Tunable photoresponse is achieved by controlling the nature of sp3 sites and the size and fraction of sp3 /sp2 domains. In addition, the photoresponse due to the different photoexcited-charge-carrier trapping times in sp2 and sp3 nanodomains is determined. The proposed scheme paves the way toward implementing high-performance broadband graphene-based photodetectors
Beschreibung:	Date Completed 18.07.2018 Date Revised 30.09.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.201700463