WS <sub>2</sub> ribbon arrays with defined chirality and coherent polarity
Guodong Xue, Ziqi Zhou, Quanlin Guo, Yonggang Zuo, Wenya Wei, Jiashu Yang, Peng Yin, Shuai Zhang, Ding Zhong, Yilong You, Xin Sui, Chang Liu, Chang Liu, Muhong Wu, Hao Hong, Zhu‐Jun Wang, Peng Gao, Qunyang Li, Libo Zhang, Dapeng Yu, Feng Ding, Zhongming Wei, Can Liu, Can Liu, Kaihui Liu
Abstract
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.