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题名: Stable High-Performance Flexible Photodetector Based on Upconversion Nanoparticles/Perovskite Microarrays Composite
作者: Li, Jianbo1, 2, 3;  Shen, Yingli1, 2, 3;  Liu, Yucheng1, 2, 3;  Shi, Feng1, 2, 3;  Ren, Xiaodong1, 2, 3;  Niu, Tianqi1, 2, 3;  Zhao, Kui1, 2, 3;  Liu, Shengzhong Frank1, 2, 3, 4, 5
关键词: photodetector ;  perovskite ;  upconversion nanoparticles ;  broadband photoresponse ;  long-term stability
刊名: ACS APPLIED MATERIALS & INTERFACES
发表日期: 2017-06-07
DOI: 10.1021/acsami.7b03229
卷: 9, 页:19176-19183
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Science & Technology - Other Topics ;  Materials Science
英文摘要: Methylammonium lead halide perovskite has emerged as a new class of low-temperature-processed high-performance semiconductors for optoelectronics, but with photoresponse limited to the UVvisible region and low environmental stability. Herein, we report a flexible planar photodetector based on MAPbI(3) microarrays integrated with NaYF4:Yb/Er upconversion nanoparticles (UCns) that offers promise for future high performance and long-term environmental stability. The promise derives from the confluence of several factors, including significantly enhanced photons absorption in the visible spectrum, efficient energy transition in the near-infrared (NIR) region, and inhibition of water attack by the hydrophobic UCns capping layer. The UCns layer aided in remarkably enhanced photodetection capability in the visible spectrum with detectivity (D*) reaching 5.9 x 10(12) Jones, among the highest reported values, due to the increased photocarrier lifetime and decreased reflectivity. Excellent NIR photoresponse with spectral responsivity (R) and D* as high as 0.27 A W-1 and 0.76 x 10(12) Jones were obtained at 980 nm, respectively, superior to the reported values of state-of-the-art organic-perovskite NIR photodetectors. Moreover, the hydrophobic UCns capping layer serving as a moisture inhibitor allowed significantly enhanced long-term environmental stability, e.g., 70% vs 27% performance retained after 1000 h exposure in 30-40% RH humidity air without encapsulation for the bilayer and the neat MAPbI(3) devices, respectively. These results suggest that the composite based on perovskite and UCns is promising for constructing high-performance broadband optoelectronic devices with long-term stability.
关键词[WOS]: PEROVSKITE SINGLE-CRYSTALS ;  ORGANOMETAL HALIDE PEROVSKITE ;  LIGHT-EMITTING-DIODES ;  SOLAR-CELLS ;  HIGH-DETECTIVITY ;  IMAGE SENSORS ;  EFFICIENCY ;  GROWTH ;  NANOCRYSTALS ;  DEPOSITION
语种: 英语
WOS记录号: WOS:000403136400086
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152209
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Shaanxi Normal Univ, Natl Minist Educ, Key Lab Appl Surface & Colloid Chem, Xian 710119, Peoples R China
2.Shaanxi Normal Univ, Shaanxi Key Lab Adv Energy Devices, Xian 710119, Peoples R China
3.Shaanxi Normal Univ, Sch Mat Sci & Engn, Shaanxi Engn Lab Adv Energy Technol, Xian 710119, Peoples R China
4.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
5.Chinese Acad Sci, iChEM, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Li, Jianbo,Shen, Yingli,Liu, Yucheng,et al. Stable High-Performance Flexible Photodetector Based on Upconversion Nanoparticles/Perovskite Microarrays Composite[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9:19176-19183.
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