https://scholars.lib.ntu.edu.tw/handle/123456789/598362
標題: | Self-Patterned CsPbBr3 Nanocrystal Based Plasmonic Hot-Carrier Photodetector at Telecommunications Wavelengths | 作者: | Wang Z Lin C.-C Ho Y.-L Xiang R Maruyama S Chen C.-W Delaunay J.-J. CHUN-WEI CHEN |
關鍵字: | hot-carrier photodetection;near-infrared telecommunications wavelengths;perovskite nanocrystals;self-patterning;Bromine compounds;Energy harvesting;Infrared devices;Lead compounds;Morphology;Perovskite;Photodetectors;Photons;Plasmonics;Solar energy;Hot-carrier photodetection;Hot-carriers;Near Infrared;Near-infrared;Near-infrared telecommunication wavelength;Perovskite nanocrystal;Photo detection;Self-patterning;Telecommunication wavelengths;Nanocrystals | 公開日期: | 2021 | 卷: | 9 | 期: | 24 | 來源出版物: | Advanced Optical Materials | 摘要: | Extending the photodetection range of lead halide perovskites into the near-infrared telecommunications bands can not only enable a wide-spectrum solar energy harvesting, but pave ways for important applications in biodetection, infrared imaging, and telecommunication. However, there is a lack of an effective means to apply lead halide perovskites for efficient photodetection covering a wide wavelength range in the telecommunications bands. Here, CsPbBr3 nanocrystal- (NC-) based photodetector operating at wavelengths in the telecommunications bands via surface plasmon-induced hot holes is demonstrated. The internal photoemission of the plasmon-induced hot holes from plasmonic antennas into CsPbBr3 NCs enables a photocurrent at wavelengths around 1550?nm. Moreover, a solvent treatment is also performed on drop-casted CsPbBr3 NC thin film leading to a nanoscale self-patterning with a compact and uniform morphology. This treatment benefits the carrier transportation contributing to a detectable photoresponse and minimizes the optical scattering so that the CsPbBr3 NCs can be integrated into the plasmonic structure without damping its resonant feature. Consequently, the CsPbBr3 NC-based plasmonic hot-carrier device achieves polarization discrimination and wavelength-selective photodetection without additional optical components. ? 2021 Wiley-VCH GmbH |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85115288444&doi=10.1002%2fadom.202101474&partnerID=40&md5=248d6439fc081b21b0f2f6ec1a8409f8 https://scholars.lib.ntu.edu.tw/handle/123456789/598362 |
ISSN: | 21951071 | DOI: | 10.1002/adom.202101474 |
顯示於: | 材料科學與工程學系 |
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