Black phosphorus quantum dots

Xiao Zhang, Haiming Xie, Zhengdong Liu, Chaoliang Tan, Zhimin Luo, Hai Li, Jiadan Lin, Liqun Sun, Wei Chen, Zhichuan Xu, Linghai Xie, Wei Huang, Hua Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

536 Citations (Scopus)

Abstract

As a unique two-dimensional nanomaterial, layered black phosphorus (BP) nanosheets have shown promising applications in electronics. Although mechanical exfoliation was successfully used to prepare BP nanosheets, it is still a challenge to produce novel BP nanostructures in high yield. A facile top-down approach for preparation of black phosphorus quantum dots (BPQDs) in solution is presented. The obtained BPQDs have a lateral size of 4.9±1.6 nm and thickness of 1.9±0.9 nm (ca. 4±2 layers). As a proof-of-concept application, by using BPQDs mixed with polyvinylpyrrolidone as the active layer, a flexible memory device was successfully fabricated that exhibits a nonvolatile rewritable memory effect with a high ON/OFF current ratio and good stability.

Original languageEnglish
Pages (from-to)3653-3657
Number of pages5
JournalAngewandte Chemie - International Edition
Volume54
Issue number12
DOIs
Publication statusPublished - 16 Mar 2015
Externally publishedYes

Keywords

  • black phosphorus
  • memory devices
  • quantum dots
  • two-dimensional materials

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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