Zhang Shuai, Ma Shufang, Cao Ben, Zhuang Qiandong, Xu Yang, Wang Jiahui, Zhang Xishuo, Nan Xiaoye, Hao Xiaodong, Xu Bingshe
Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China.
School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China.
Angew Chem Int Ed Engl. 2023 Jan 23;62(4):e202217127. doi: 10.1002/anie.202217127. Epub 2022 Dec 20.
The bottom-up preparation of two-dimensional material micro-nano structures at scale facilitates the realisation of integrated applications in optoelectronic devices. Fibrous Phosphorus (FP), an allotrope of black phosphorus (BP), is one of the most promising candidate materials in the field of optoelectronics with its unique crystal structure and properties. However, to date, there are no bottom-up micro-nano structure preparation methods for crystalline phosphorus allotropes. Herein, we present the bottom-up preparation of fibrous phosphorus micropillar (FP-MP) arrays via a low-pressure gas-phase transport (LP-CVT) method that controls the directional phase transition from amorphous red phosphorus (ARP) to FP. In addition, self-powered photodetectors (PD) of FP-MP arrays with pyro-phototronic effects achieved detection beyond the band gap limit. Our results provide a new approach for bottom-up preparation of other crystalline allotropes of phosphorus.
规模化自下而上制备二维材料微纳结构有助于实现光电器件的集成应用。纤维状磷（FP）是黑磷（BP）的一种同素异形体，凭借其独特的晶体结构和性质，成为光电子领域最具潜力的候选材料之一。然而，迄今为止，尚无用于结晶磷同素异形体的自下而上微纳结构制备方法。在此，我们通过一种低压气相输运（LP-CVT）方法展示了纤维状磷微柱（FP-MP）阵列的自下而上制备，该方法控制了从非晶红磷（ARP）到FP的定向相变。此外，具有热光电子效应的FP-MP阵列自供电光电探测器（PD）实现了超越带隙极限的探测。我们的结果为自下而上制备磷的其他结晶同素异形体提供了一种新方法。
