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Few-layer selenium-doped black phosphorus: synthesis, nonlinear optical properties and ultrafast photonics applications

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Abstract

We reported on the synthesis of high quality bulk selenium (Se)-doped black phosphorus (BP) crystals using a mineralizer assisted gas-phase transformation in a mild growth condition and employed a liquid phase exfoliation approach to obtain few-layer (FL) Se-doped BP nano-sheets from the bulk counterpart. We experimentally found that FL Se-doped BP shows enhanced optical saturable absorption with long term stability, which may originate from selenium doping-induced changes of intrinsic carrier density. Taking advantage of its nonlinear optical property, we designed an optical saturable absorber (SA) device based on FL Se-doped BP, allowing the generation of a femto-second pulse in the fiber laser. Our results not only provide a new strategy in tailoring the nonlinear optical response of BP through element doping, but also suggest that FL Se-doped BP can be developed as a excellent candidate for ultrafast photonics.

Graphical abstract: Few-layer selenium-doped black phosphorus: synthesis, nonlinear optical properties and ultrafast photonics applications

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Publication details

The article was received on 25 Mar 2017, accepted on 03 May 2017 and first published on 03 May 2017


Article type: Paper
DOI: 10.1039/C7TC01267E
Citation: J. Mater. Chem. C, 2017, Advance Article
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    Few-layer selenium-doped black phosphorus: synthesis, nonlinear optical properties and ultrafast photonics applications

    Y. Ge, S. Chen, Y. Xu, Z. He, Z. Liang, Y. Chen, Y. Song, D. Fan, K. Zhang and H. Zhang, J. Mater. Chem. C, 2017, Advance Article , DOI: 10.1039/C7TC01267E

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