Black phosphorus polycarbonate polymer composite for pulsed fibre lasers

Research output: Contribution to journalArticleScientificpeer-review


  • Diao Li
  • Antonio Esau Del Rio Castillo
  • Henri Jussila
  • Guojun Ye
  • Zhaoyu Ren
  • Jintao Bai
  • Xianhui Chen
  • Harri Lipsanen

  • Zhipei Sun

  • Francesco Bonaccorso

Research units

  • Northwest University China
  • Italian Institute of Technology
  • University of Science and Technology of China
  • Collaborative Innovation Center of Advanced Microstructures
  • Chinese Academy of Sciences


Recently, the re-discovered black phosphorus (BP) has been extensively investigated for both electronic and photonic applications. However, the intrinsic instability of BP caused by moisture or oxygen reaction in ambient atmosphere has overshadowed its practical applications. Here, we present a liquid phase exfoliation-based approach for the production of few-layer BP (FL-BP) and the subsequent mixing with polycarbonate (PC) for the fabrication of a composite, which significantly reduces BP degradation by PC passivation. Experimentally, the functionalized PC few-layer BP (PC/FL-BP) composite shows environmental stability if compared with mechanically exfoliated BP flakes. We then use the PC/FL-BP composite as saturable absorber to study the nonlinear absorption property in a fibre laser at the 1.55 μm telecommunication wavelength. A Q-switched laser with pulse energy up to 25.2 nJ and pulse duration down to 1.65 μs is obtained at a low pump power of 71.7 mW. Our results can boost further research and scalable photonic applications, where environmentally stable few-layer BP based devices are needed.


Original languageEnglish
Pages (from-to)17-23
Number of pages7
JournalApplied Materials Today
Publication statusPublished - 1 Sep 2016
MoE publication typeA1 Journal article-refereed

    Research areas

  • Few-layer black phosphorus, Fibre laser, Liquid phase exfoliation, Passive Q-switching, Polycarbonate-black phosphorus composite, Saturable absorber

ID: 4695193