Issue 42, 2019

Improvement in the quality of black phosphorus by selecting a mineralizer

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

Supplementary files

Article information

Article type
Paper
Submitted
01 Aug 2019
Accepted
24 Sep 2019
First published
24 Sep 2019

Nanoscale, 2019,11, 20081-20089

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, 11, 20081 DOI: 10.1039/C9NR06583K

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