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Issue 34, 2016
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An organic–inorganic broadband photodetector based on a single polyaniline nanowire doped with quantum dots

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Abstract

The capability to detect light over a broad waveband is highly important for practical optoelectronic applications and has been achieved with photodetectors of one-dimensional inorganic nanomaterials such as Si, ZnO, and GaN. However, achieving high speed responsivity over an entire waveband within such a photodetector remains a challenge. Here we demonstrate a broadband photodetector using a single polyaniline nanowire doped with quantum dots that is highly responsive over a broadband from 350 to 700 nm. The high responsivity is due to the high density of trapping states at the enormous interfaces between polyaniline and quantum dots. The interface trapping can effectively reduce the recombination rate and enhance the efficiency for light detection. Furthermore, a tunable spectral range can be achieved by size-based spectral tuning of quantum dots. The use of organic–inorganic hybrid polyaniline nanowires in broadband photodetection may offer novel functionalities in optoelectronic devices and circuits.

Graphical abstract: An organic–inorganic broadband photodetector based on a single polyaniline nanowire doped with quantum dots

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Supplementary files

Article information


Submitted
18 May 2016
Accepted
04 Jul 2016
First published
05 Jul 2016

Nanoscale, 2016,8, 15529-15537
Article type
Paper

An organic–inorganic broadband photodetector based on a single polyaniline nanowire doped with quantum dots

X. Yang, Y. Liu, H. Lei and B. Li, Nanoscale, 2016, 8, 15529
DOI: 10.1039/C6NR04030F

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