Arbitrary multicolor photodetection by hetero-integrated semiconductor nanostructures.

Abstract:

:The typical photodetectors can only detect one specific optical spectral band, such as InGaAs and graphene-PbS quantum dots for near-infrared (NIR) light detection, CdS and Si for visible light detection, and ZnO and III-nitrides for UV light detection. So far, none of the developed photodetector can achieve the multicolor detection with arbitrary spectral selectivity, high sensitivity, high speed, high signal-to-noise ratio, high stability, and simplicity (called 6S requirements). Here, we propose a universal strategy to develop multicolor photodetectors with arbitrary spectral selectivity by integrating various semiconductor nanostructures on a wide-bandgap semiconductor or an insulator substrate. Because the photoresponse of each spectral band is determined by each semiconductor nanostructure or the semiconductor substrate, multicolor detection satisfying 6S requirements can be readily satisfied by selecting the right semiconductors.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Sang L,Hu J,Zou R,Koide Y,Liao M

doi

10.1038/srep02368

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

2368

issn

2045-2322

pii

srep02368

journal_volume

3

pub_type

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