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Visible-blind photodetector based on p-i-n junction GaN nanowire ensembles.

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TLDR
The synthesis, fabrication and extensive characterization of a visible-blind photodetector based on p-i-n junction GaN nanowire ensembles that presents a high peak responsivity and the dependence on the incident power and the operation speed are discussed.
Abstract
We report the synthesis, fabrication and extensive characterization of a visible-blind photodetector based on p-i-n junction GaN nanowire ensembles. The nanowires were grown by plasma-assisted molecular beam epitaxy on an n-doped Si(111) substrate, encapsulated into a spin-on-glass and processed using dry etching and metallization techniques. The detector presents a high peak responsivity of 0.47 A W(-1) at - 1 V. The spectral response of the detector is restricted to the UV range with a UV-to-visible rejection ratio of 2 x 10(2). The dependence on the incident power and the operation speed of the photodetector are discussed.

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Citations
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Journal ArticleDOI

A Comprehensive Review of Semiconductor Ultraviolet Photodetectors: From Thin Film to One-Dimensional Nanostructures

TL;DR: A comprehensive review on the state-of-the-art research activities in the UV photodetection field, including not only semiconductor thin films, but also 1D nanostructured materials, which are attracting more and more attention in the detection field are provided.
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Gallium oxide solar-blind ultraviolet photodetectors: a review

TL;DR: In this article, a comprehensive review on Ga2O3-based solar-blind UV photodetectors is provided, with a detailed introduction of the developmental process of material growth methods and device manufacturing in the past decade.
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Ultraviolet Detectors Based on Wide Bandgap Semiconductor Nanowire: A Review.

TL;DR: This review summarizes recent developments in the classification and principles of UV detectors, i.e., photoconductive type, Schottky barrier type, metal-semiconductor-metal (MSM) type, p-n junction type and p-i-N junction type.
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III-Nitride nanowire optoelectronics

TL;DR: In this article, the authors provide an overview on the recent progress made in III-nitride nanowire optoelectronic devices, including light emitting diodes, lasers, photodetectors, single photon sources, intraband devices, solar cells, and artificial photosynthesis.
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Nanowire Electronics: From Nanoscale to Macroscale

TL;DR: A comprehensive review of the continuing efforts in exploring semiconductor nanowires for the assembly of functional nanoscale electronics and macroelectronics, including a unique design of solution-processable nanowire thin-film transistors for high-performance large-area flexible electronics.
References
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Journal ArticleDOI

ZnO Nanowire UV Photodetectors with High Internal Gain

TL;DR: Despite the slow relaxation time, the extremely high internal gain of ZnO NW photodetectors results in gain-bandwidth products higher than approximately 10 GHz, which promise a new generation of phototransistors for applications such as sensing, imaging, and intrachip optical interconnects.
Journal ArticleDOI

Size-dependent Photoconductivity in MBE-Grown GaN -Nanowires

TL;DR: Electrical transport in the dark and under ultraviolet (UV) illumination through GaN nanowhiskers grown by molecular beam epitaxy (MBE) is reported, which is sensitively dependent on the column diameter.
Journal ArticleDOI

Vertically Aligned p-Type Single-Crystalline GaN Nanorod Arrays on n-Type Si for Heterojunction Photovoltaic Cells

TL;DR: This study provides an experimental demonstration for integrating one-dimensional nanostructure arrays with the substrate to directly fabricate heterojunction photovoltaic cells.
Journal ArticleDOI

Short-wavelength solar-blind detectors-status, prospects, and markets

TL;DR: The development of Al/sub x/Ga/sub 1-x/N-based solar-blind UV detectors will be reviewed, the technological issues pertaining to material synthesis and device fabrication will be discussed, and the current state-of-the-art and future prospects for these detectors are reviewed and discussed.
Journal ArticleDOI

III nitrides and UV detection

TL;DR: In this paper, materials and devices issues are considered to provide a full picture of the advances in nitride UV photodetection, including basic structures like photoconductors, Schottky, p-i-n and metal-semiconductor-metal photodiodes and phototransistors.
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