文献类型：期刊文献

英文题名：Anisotropic High Carrier Mobility in Violet Phosphorus

作者：Zheng, Yuanyuan[1,2,3] Wang, Cong[1] Tian, Yubo[2,3] Wang, Xinyu[1] Jiang, Chuanxiu[2,3] Zhang, Yuyang[2,3] Gong, Yiyang[2,3] Zhong, Yangguang[2,3] Wang, Shaoli[4] Yue, Shuai[2,3] Liu, Xinfeng[2,3]

第一作者：Zheng, Yuanyuan

通信作者：Wang, C[1];Yue, S[2];Liu, XF[2];Yue, S[3];Liu, XF[3]

机构：[1]Beijing Univ Chem Technol, Coll Math & Phys, Beijing 100029, Peoples R China;[2]Natl Ctr Nanosci & Technol, CAS Key Lab Standardizat & Measurement Nanotechnol, Beijing 100190, Peoples R China;[3]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[4]Chinese Acad Forestry, Expt Ctr Forestry North China, Beijing 102300, Peoples R China

年份：2025

外文期刊名：NANO LETTERS

收录：;EI(收录号：20253519086331);Scopus(收录号：2-s2.0-105014377466);WOS:【SCI-EXPANDED(收录号:WOS:001543683200001)】；

基金：This work performed in China was funded by the National Key Research and Development Program of China (2024YFA1208203, 2023YFA1507002), the National Natural Science Foundation of China (62205011, 22173025), the Strategic Priority Research Program of Chinese Academy of Sciences, Grant No. XDB0770000, the National Science Foundation for Distinguished Young Scholars of China (22325301), the National Science Fund for Excellent Young Scholars of China (62422502), and the Fundamental Research Funds for the Central Universities (PY2507). S.Y. appreciates support from the Youth Innovation Promotion Association CAS, CAS Project for Young Scientists in Basic Research, under grant no. YSBR-120.

语种：英文

外文关键词：violet phosphorus; anisotropic transport; deformationpotential; transient absorption microscopy; mobility

摘要：Violet phosphorus (VP), with its high carrier mobility, is a promising candidate for next-generation optoelectronic devices. Its anisotropic structure, polarization sensitivity, high photoelectric efficiency, and tunable bandgap enable diverse optical responses, making it ideal for applications such as photodetectors, neural networks, and multimodal systems. However, the basic anisotropic transport properties have not been experimentally revealed. Here, we report the anisotropic transport behavior of VP nanosheets using polarized transient absorption microscopy. The ambipolar mobility along the a-axis reaches similar to 2100 cm2V-1s-1, significantly higher than the b-axis mobility of similar to 380 cm2V-1s-1, yielding a diffusion anisotropy ratio of 5.5:1. Steady-state optical techniques further indicate that anisotropy in the deformation potential plays a key role in this behavior. This study clarifies the intrinsic mechanism of anisotropic carrier transport in VP and offers theoretical insight for designing angle-sensitive optoelectronic devices.