DOI: 10.1016/j.scib.2019.12.015
论文题名: CVD growth of perovskite/graphene films for high-performance flexible image sensor
作者: Xia K. ; Wu W. ; Zhu M. ; Shen X. ; Yin Z. ; Wang H. ; Li S. ; Zhang M. ; Wang H. ; Lu H. ; Pan A. ; Pan C. ; Zhang Y.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期: 5 起始页码: 343
结束页码: 349
语种: 英语
中文关键词: Artificial retina
; Chemical vapor deposition
; Flexible photodetector array
; Graphene template
; Hybrid perovskite
英文关键词: Color vision
; Graphene
; Image recognition
; Image sensors
; Layered semiconductors
; Lead compounds
; Light absorption
; Medical imaging
; Optical communication
; Perovskite
; Photodetectors
; Photoelectricity
; Photons
; Remote sensing
; Semiconductor quantum wells
; Van der Waals forces
; Artificial retinas
; Chemical vapor deposition methods
; Color discrimination
; Flexible photodetectors
; High carrier mobility
; Human Visual System
; Photoelectric property
; Photoexcited electron-hole pairs
; Chemical vapor deposition
英文摘要: Hybrid perovskite possesses excellent photoelectric properties, including large light-absorption capacity and high carrier mobility, and is an ideal light-absorbing material for photoelectric devices. The grain size and compactness of hybrid perovskite are key factors affecting the performance of photoelectric devices. The photocurrent and photoresponsivity of these devices are relatively low because of the rapidly recombined photoexcited electron-hole pairs in hybrid perovskite. Herein, we develop a facile two-step chemical vapor deposition (CVD) method to synthesize a high-quality van der Waals (vdWs) MAPbI3/graphene heterostructure for high-performance image sensor. We introduced inorganic sources (PbI2) to vdWs epitaxially grown PbI2 film on a seamless graphene monolayer film template through CVD. Methylammonium iodide (MAI) was then reintroduced to prepare the vdWs MAPbI3/graphene heterostructure. The MAPbI3 layer is composed of densely packed, large-size grains and displays a smooth surface. High photoresponsivity of 107 A/W is achieved in the corresponding photodetector. Inspired by the human visual system, we designed a flexible photodetector array containing (24 × 24) pixels, achieving perfect image recognition and color discrimination. Our study may greatly facilitate the construction of high-performance optoelectronic devices in artificial retina, biomedical imaging, remote sensing, and optical communication. © 2019 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170091
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China; CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, China; Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics and College of Materials Science and Engineering, Hunan University, Changsha, 410082, China; Cavendish Laboratory, University of Cambridge, CB3 0HE, United Kingdom
Recommended Citation:
Xia K.,Wu W.,Zhu M.,et al. CVD growth of perovskite/graphene films for high-performance flexible image sensor[J]. Science Bulletin,2020-01-01,65(5)