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High-Stretchability and High-Responsivity Semiconductor Nanoparticles/2D Hybrid Phototransistor
High stretchability,high responsivity,phototransistor,two-dimensional materal,semiconductor nanoparticles,
|Publication Year :||2016|
Two dimensional (2D) materials have created a new possibility for flexible electronics, which will be omnipresent in future wearable technologies. However, the poor native stretchability of 2D materials limits its performance and practical applications. In order to circumvent this drawback, in this study, we proposed an hybrid nanocompsite made with 2D material, semiconductor nanoparticles and metallic nanowires, which was embedded in a biocompatible elastic ripple film. The excellent conductivity of 2D material and metallic nanowires can serve as good conducting channels, while semiconductor nanoparticles are responsible for highly sensitive photoabsorption. More importantly, the elastic ripple film can be used to overcome the limit of native stretchability of the constituent nanomaterials. Combing all these unique features, we demonstrated highly stretchable and ultrasensitive phototransistors. The new designed device can be stretched up to 30% with high repeatability. The calculated photoresponsivity, photocurrent gain and detectivity is found to be 106 A W-1, 107 and 1013 Jones, respectively, which are comparable with the rigid devices. Our approach is quite general, which can be extended to many other material systems, and therefore it paves a key step for designing high performance soft optoelectronic devices with practical applications.
|Appears in Collections:||物理學系|
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