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Journal of Materials Science
Erschienen in: Journal of Materials Science 4/2019

05.11.2018 | Electronic materials

Flexible photodetector based on cotton coated with reduced graphene oxide and sulfur and nitrogen co-doped graphene quantum dots

verfasst von: Cheng Luo, He Xie, Chengyi Hou, Qinghong Zhang, Yaogang Li, Hongzhi Wang

Erschienen in: Journal of Materials Science | Ausgabe 4/2019

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Abstract

Here, we demonstrate a high-performance flexible photodetector based on S and N co-doped graphene quantum dots (S,N-GQDs)-modified reduced graphene oxide (rGO) film for wearable applications. To fabricate the hybrid photodetector, S,N-GQDs are simply sprayed on rGO-coated cotton substrate that is fabricated through a vacuum filtration process. Owing to the synergistic effect of S, N-GQDs and rGO, high responsivity (0.2–1.25 A W−1) and detectivity (3.86 × 1010 J) at a low operating voltage are achieved in the broad spectral range from UV to near infrared. The underlying mechanism is attributed to the separation of photogenerated electrons and holes due to the charge transfer caused by the appropriate band between S,N-GQDs and rGO. Furthermore, the large absorptivity of S,N-GQDs and the excellent conductivity of the rGO also play significant roles. The attributes of flexibility, high detectivity, and sensitivity of our novel flexible photodetector indicate promising potential for future wearable optoelectronic devices.
Vorheriger Artikel Modified qHAADF method for atomic column-by-column compositional quantification of semiconductor heterostructures
Nächster Artikel Improvement of thermoelectric properties of Ca0.9Gd0.1MnO3 by powder engineering through K2CO3 additions

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Metadaten
Titel
Flexible photodetector based on cotton coated with reduced graphene oxide and sulfur and nitrogen co-doped graphene quantum dots
verfasst von
Cheng Luo
He Xie
Chengyi Hou
Qinghong Zhang
Yaogang Li
Hongzhi Wang
Publikationsdatum
05.11.2018
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 4/2019
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-018-3088-4

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