Producing air-stable monolayers of phosphorene and their defect engineering

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Jiajie Pei
  • Jiong Yang
  • Xibin Wang
  • Zongfu Yu
  • Duk-Yong Choi
  • Barry Luther-Davies
  • Yuerui Lu

Detail(s)

Original languageEnglish
Article number10450
Journal / PublicationNature Communications
Volume7
Early online date22 Jan 2016
Publication statusPublished - 2016
Externally publishedYes

Abstract

It has been a long-standing challenge to produce air-stable few- or monolayer samples of phosphorene because thin phosphorene films degrade rapidly in ambient conditions. Here we demonstrate a new highly controllable method for fabricating high quality, air-stable phosphorene films with a designated number of layers ranging from a few down to monolayer. Our approach involves the use of oxygen plasma dry etching to thin down thick-exfoliated phosphorene flakes, layer by layer with atomic precision. Moreover, in a stabilized phosphorene monolayer, we were able to precisely engineer defects for the first time, which led to efficient emission of photons at new frequencies in the near infrared at room temperature. In addition, we demonstrate the use of an electrostatic gate to tune the photon emission from the defects in a monolayer phosphorene. This could lead to new electronic and optoelectronic devices, such as electrically tunable, broadband near infrared lighting devices operating at room temperature.

Citation Format(s)

Producing air-stable monolayers of phosphorene and their defect engineering. / Pei, Jiajie; Gai, Xin; Yang, Jiong; Wang, Xibin; Yu, Zongfu; Choi, Duk-Yong; Luther-Davies, Barry; Lu, Yuerui.

In: Nature Communications, Vol. 7, 10450, 2016.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review