气候变化领域集成服务门户(CCPortal): CVD growth of perovskite/graphene films for high-performance flexible image sensor

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DOI	10.1016/j.scib.2019.12.015
	CVD growth of perovskite/graphene films for high-performance flexible image sensor
	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.
发表日期	2020
ISSN	20959273
起始页码	343
结束页码	349
卷号	65 期号:5
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
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
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207236
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
推荐引用方式 GB/T 7714	Xia K.,Wu W.,Zhu M.,et al. CVD growth of perovskite/graphene films for high-performance flexible image sensor[J],2020,65(5).
APA	Xia K..,Wu W..,Zhu M..,Shen X..,Yin Z..,...&Zhang Y..(2020).CVD growth of perovskite/graphene films for high-performance flexible image sensor.Science Bulletin,65(5).
MLA	Xia K.,et al."CVD growth of perovskite/graphene films for high-performance flexible image sensor".Science Bulletin 65.5(2020).