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WS 2 ribbon arrays with defined chirality and coherent polarity.

Guodong XueZiqi ZhouQuanlin GuoYonggang ZuoWenya WeiJiashu YangPeng YinShuai ZhangDing ZhongYilong YouXin SuiChang LiuMuhong WuHao HongZhu-Jun WangPeng GaoQunyang LiLibo ZhangDapeng YuFeng DingZhong-Ming WeiCan LiuKai-Hui Liu
Published in: Science (New York, N.Y.) (2024)
One-dimensional transition metal dichalcogenides exhibiting an enhanced bulk photovoltaic effect have the potential to exceed the Shockley-Queisser limit efficiency in solar energy harvest within p - n junction architectures. However, the collective output of these prototype devices remains a challenge. We report on the synthesis of single-crystalline WS 2 ribbon arrays with defined chirality and coherent polarity through an atomic manufacturing strategy. The chirality of WS 2 ribbon was defined by substrate couplings into tunable armchair, zigzag, and chiral species, and the polarity direction was determined by the ribbon-precursor interfacial energy along a coherent direction. A single armchair ribbon showed strong bulk photovoltaic effect and the further integration of ~1000 aligned ribbons with coherent polarity enabled upscaling of the photocurrent.
Keyphrases
  • transition metal
  • ionic liquid
  • molecular dynamics simulations
  • risk assessment
  • room temperature
  • mass spectrometry
  • climate change
  • human health