WS2 ribbon arrays with defined chirality and coherent polarity

• 成果类型: Article
• 署名作者: Xue, Guodong; Zhou, Ziqi; Guo, Quanlin; Zuo, Yonggang; Wei, Wenya; Yang, Jiashu; Yin, Peng; Zhang, Shuai; Zhong, Ding; You, Yilong; Sui, Xin; Liu, Chang; Wu, Muhong; Hong, Hao; Wang, Zhu-Jun; Gao, Peng; Li, Qunyang; Zhang, Libo; Yu, Dapeng; Ding, Feng; Wei, Zhongming; Liu, Can; Liu, Kaihui
• 署名单位: Peking University; Renmin University of China; Chinese Academy of Sciences; Peking University; Peking University; Kunming University of Science & Technology; South China Normal University; Chinese Academy of Sciences; Shenzhen Institute of Advanced Technology, CAS; Tsinghua University; Peking University; Tsinghua University; Collaborative Innovation Center of Quantum Matter; ShanghaiTech University; Shenzhen International Quantum Academy; Songshan Lake Materials Laboratory
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8539
• DOI: 10.1126/science.adn9476
• 发表日期: 2024-06-07
• 页码: 1100-1104
• 关键词: carbon nanotubes; GROWTH

摘要

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 WS2 ribbon arrays with defined chirality and coherent polarity through an atomic manufacturing strategy. The chirality of WS2 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 similar to 1000 aligned ribbons with coherent polarity enabled upscaling of the photocurrent.