title: Perovskite-Erbium Silicate Nanosheet Hybrid Waveguide Photodetectors at the Near-Infrared Telecommunication Band.
abstract: Methylammonium lead halide perovskites have attracted enormous attentions due to their superior optical and electronic properties. However, the photodetection at near-infrared telecommunication wavelengths is hardly achievable because of their wide bandgaps. Here, this study demonstrates, for the first time, novel perovskite-erbium silicate nanosheet hybrid photodetectors with remarkable spectral response at ≈1.54 µm. Under the near-infrared light illumination, the erbium silicate nanosheets can give strong upconversion luminescence, which will be well confined in their cavities and then be efficiently coupled into and simultaneously excite the adjacent perovskite to realize photodetection. These devices own prominent responsivity and external quantum efficiency as high as previously reported microscale silicon-based subbandgap photodetectors. More importantly, the photoresponse speed (≈900 µs) is faster by five orders than the ever reported hot electron silicon-based photodetectors at telecommunication wavelengths. The realization of perovskite-based telecommunication band photodetectors will open new chances for applications in advanced integrated photonics devices and systems.
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Xuehong
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Shuzhen
authors.initials: S
authors.lastname: Yang
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Hong
authors.initials: H
authors.lastname: Zhou
authors.affiliation: School of Physical Science and Technology Engineering, Yulin Normal University, Yulin, 537000, P. R. China.
authors.forename: Junwu
authors.initials: J
authors.lastname: Liang
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Huawei
authors.initials: H
authors.lastname: Liu
authors.affiliation: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Xia
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Jiang
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Qinglin
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Hu
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Xiujuan
authors.initials: X
authors.lastname: Zhuang
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Hongjun
authors.initials: H
authors.lastname: Liu
authors.affiliation: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, 200083, China.
authors.forename: Weida
authors.initials: W
authors.lastname: Hu
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Wang
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Physics and Electronics, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, P. R. China.
authors.forename: Anlian
authors.initials: A
authors.lastname: Pan
keywords: energy transfer; erbium silicate nanosheets; methylammonium lead halide perovskite; photodetector; telecommunication wavelength