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Black P/graphene hybrid: A fast response humidity sensor with good reversibility and stability.

Abstract：

:Black phosphorus (BP) materials have attracted considerable attention owing to their ultra-sensitive humidity sensing characteristics because of the natural absorption of water (H2O) molecules on the BP surface caused by the specific 2D layer-crystalline structure. On the other hand, the BP-based humidity sensor is less repeatable due to the instability of BP with water molecules and the stability of the sensor is reduced. In this study, this limitation of the BP-based humidity sensor was overcome by preparing a BP/graphene hybrid as a novel humidity sensing nanostructure. The BP/graphene interface improved the stability of the humidity sensor after a few weeks with a linear response within the relative humidity (RH) range of 15-70%. The sensor's response/recovery speed of the humidity sensor was extremely fast within few seconds. The response (S) of the humidity sensor based on the BP/graphene hybrid is 43.4% at RH = 70%. The estimated response and recovery time of the sensor is only 9 and 30 seconds at RH = 70% at room temperature. The experimental investigation reveals that the BP/graphene hybrid not only improves the reversibility and hysteresis factors but also enhances the stability of the humidity sensor.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Phan DT,Park I,Park AR,Park CM,Jeon KJ

doi

10.1038/s41598-017-10848-3

subject

Has Abstract

pub_date

2017-09-05 00:00:00

pages

10561

issue

1

issn

2045-2322

pii

10.1038/s41598-017-10848-3

journal_volume

7

pub_type

杂志文章

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