Metal-semiconductor-metal infrared photodetector based on PbTe nanowires with fast response and recovery time

Gong, Xuejun; Fei, Guang Tao; Fu, Wen; Zhong, Binnian; Gao, Xu; Zhang, Li De

doi:10.1016/j.apsusc.2017.01.246

Cited by 24 publications

(13 citation statements)

References 31 publications

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“…Based on the values of the incident light powers, 63.7 mW/cm 2 for 405 nm and 4.55 mW/cm 2 for 365 nm respectively, the effective illuminated area (10 −9 cm 2 ), at a bias of 1 V, the R λ , EQE and D * were estimated to be: 3.14 A/W, 9.51% and 5.39 × 10 9 Jones for 405 nm and 43.95 A/W, 149.3% and 75.51 × 10 9 Jones for 365 nm, respectively. These values are in agreement with those reported in the literature for other photodetectors based on InP, GaAs/AlGaAs, PbTe or ZnO-TiO 2 nanowires 30,58–60 . These results confirm the potential application of the n-p diodes based on single ZnO-Cu x O core-shell nanowires as UV photodetectors.…”

Section: Resultssupporting

confidence: 92%

Radial heterojunction based on single ZnO-CuxO core-shell nanowire for photodetector applications

Costas

Florica

Preda

et al. 2019

Sci Rep

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ZnO-Cu x O core-shell radial heterojunction nanowire arrays were fabricated by a straightforward approach which combine two simple, cost effective and large-scale preparation methods: (i) thermal oxidation in air of a zinc foil for obtaining ZnO nanowire arrays and (ii) radio frequency magnetron sputtering for covering the surface of the ZnO nanowires with a Cu x O thin film. The structural, compositional, morphological and optical properties of the high aspect ratio ZnO-Cu x O core-shell nanowire arrays were investigated. Individual ZnO-Cu x O core-shell nanowires were contacted with Pt electrodes by means of electron beam lithography technique, diode behaviour being demonstrated. Further it was found that these n-p radial heterojunction diodes based on single ZnO-Cu x O nanowires exhibit a change in the current under UV light illumination and therefore behaving as photodetectors.

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Section: Resultssupporting

confidence: 92%

Radial heterojunction based on single ZnO-CuxO core-shell nanowire for photodetector applications

Costas

Florica

Preda

et al. 2019

Sci Rep

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“…Using these equations, the key parameters of a photodetector (R λ , EQE and D * ) were estimated to be: 4.84 A/W, 11.59% and 22.52 × 10 9 Jones for 520 nm and 8.74 A/W, 26.56% and 40.5 × 10 9 Jones for 405 nm, respectively. The values obtained for the R λ , EQE and D * parameters are in agreement with data reported in the literature for photodetectors based on core–shell nanowires 16 , 59 – 61 .…”

Section: Resultssupporting

confidence: 90%

Photodetecting properties of single CuO–ZnO core–shell nanowires with p–n radial heterojunction

Costas

Florica

Preda

et al. 2020

Sci Rep

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CuO–ZnO core–shell radial heterojunction nanowire arrays were obtained by a simple route which implies two cost-effective methods: thermal oxidation in air for preparing CuO nanowire arrays, acting as a p-type core and RF magnetron sputtering for coating the surface of the CuO nanowires with a ZnO thin film, acting as a n-type shell. The morphological, structural, optical and compositional properties of the CuO–ZnO core–shell nanowire arrays were investigated. In order to analyse the electrical and photoelectrical properties of the metal oxide nanowires, single CuO and CuO–ZnO core–shell nanowires were contacted by employing electron beam lithography (EBL) and focused ion beam induced deposition (FIBID). The photoelectrical properties emphasize that the p–n radial heterojunction diodes based on single CuO–ZnO core–shell nanowires behave as photodetectors, evidencing a time-depending photoresponse under illumination at 520 nm and 405 nm wavelengths. The performance of the photodetector device was evaluated by assessing its key parameters: responsivity, external quantum efficiency and detectivity. The results highlighted that the obtained CuO–ZnO core–shell nanowires are emerging as potential building blocks for a next generation of photodetector devices.

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“…In Fig. 6b, the solid squares are the experimental data and the solid line is a fit to the simple power law, I ph = AP θ , where A is a constant, P is the light intensity, and the θ of 1 is an exponent, which confirms that the photocurrent is mostly determined by the amount of photo-generated carriers [28–31]. The photo-electron detection is once again demonstrated by the photocurrent modified by the incident light in square wave form, as shown in Fig.…”

Section: Resultsmentioning

confidence: 85%

All-Si Photodetectors with a Resonant Cavity for Near-Infrared Polarimetric Detection

Feng

Zhu

et al. 2019

Nanoscale Res Lett

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This work developed an all-Si photodetector with a surface plasmonic resonator formed by a sub-wavelength Au grating on the top of a Si-nanowire array and the same one beside the wires. The Au/Si interface with a Schottky barrier allows the photo-electron detection in near-infrared wavelength based on the internal emission of hot electrons generated by the surface plasmons in the cavity. Meanwhile, the Au sub-wavelength grating on the Si nanowire array acts as a polarizer for polarimetric detection. Finite-difference time-domain method was applied in the design of the novel device and state-of-art nanofabrication based on electron beam lithography was carried out. The characterization of the photo-electronic properties as well as the polarimetric detection demonstrate that the fabricated detectors on the silicon substrate possesses great prospects for sensing technology on all-Si.

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Metal-semiconductor-metal infrared photodetector based on PbTe nanowires with fast response and recovery time

Cited by 24 publications

References 31 publications

Radial heterojunction based on single ZnO-CuxO core-shell nanowire for photodetector applications

Radial heterojunction based on single ZnO-CuxO core-shell nanowire for photodetector applications

Photodetecting properties of single CuO–ZnO core–shell nanowires with p–n radial heterojunction

All-Si Photodetectors with a Resonant Cavity for Near-Infrared Polarimetric Detection

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