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Improvement in the quality of black phosphorus by selecting a mineralizer

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Abstract

The low-cost synthesis of high-quality black phosphorus (BP) has always been a challenge. Herein, we selected different mineralizers to synthesize high-crystallinity BP by the chemical vapor transport (CVT) method and demonstrated that the use of Pb instead of Sn can lead to higher purity BP. Residual Sn in Sn-BP was confirmed by X-ray photoelectron spectroscopy (XPS), but no mineralizer impurity was observed in Pb-BP. The performance of FET devices showed that the hole mobility of Pb-BP was significantly higher than that of Sn-BP. On the other hand, the Pb-BP devices exhibited good bipolarity with the highest hole mobility of 523 cm2 V−1 s−1 at room temperature and electron mobility of up to 28 cm2 V−1 s−1.

Graphical abstract: Improvement in the quality of black phosphorus by selecting a mineralizer

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Publication details

The article was received on 01 Aug 2019, accepted on 24 Sep 2019 and first published on 24 Sep 2019


Article type: Paper
DOI: 10.1039/C9NR06583K
Nanoscale, 2019, Advance Article

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    Improvement in the quality of black phosphorus by selecting a mineralizer

    Y. Yu, B. Xing, D. Wang, L. Guan, X. Niu, J. Yao, X. Yan, S. Zhang, Y. Liu, X. Wu, J. Sha and Y. Wang, Nanoscale, 2019, Advance Article , DOI: 10.1039/C9NR06583K

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