二维材料：电子学、光子学和光电子学的新机遇 | Science Bulletin专题

EDITORIAL

Two-dimensional materials: new opportunities for electronics, photonics and optoelectronics

Qihua Xiong

Science Bulletin, 2019, 64(15): 1031-1032

NEWS & VIEWS

Van der Waals integration of 2D atomic crystals for advanced multifunctional devices

Ruiqing Cheng, Lei Yin, Feng Wang, Zhenxing Wang, Jun He*

Science Bulletin, 2019, 64(15): 1033-1035

ARTICLES

Nonlinear optics in the electron-hole continuum in 2D semiconductors: two-photon transition, second harmonic generation and valley current injection

Pu Gong*, Hongyi Yu*, Yong Wang, Wang Yao

Science Bulletin, 2019, 64(15): 1036-1043

本文研究了单层过渡金属硫族化合物半导体中的电子-空穴散射连续态的双光子跃迁，指出了这一非线性光学过程中两种相反圆偏光的贡献的光学选择定则。

Crossover from 2D metal to 3D Dirac semimetal in metallic PtTe2 films with local Rashba effect

Ke Deng, Mingzhe Yan, Chu-Ping Yu, Jiaheng Li, Xue Zhou, Kenan Zhang, Yuxin Zhao, Koji Miyamoto, Taichi Okuda, Wenhui Duan, Yang Wu, Xiaoyan Zhong, Shuyun Zhou*

Science Bulletin, 2019, 64(15): 1044-1048

利用分子束外延技术生长出厚度可控的高质量PtTe2薄膜，并利用角分辨光电子能谱(ARPES)系统性地研究了其电子结构与样品层厚的依赖关系。

A field-effect approach to directly profiling the localized states in monolayer MoS2

Hao Wu, Yuan Liu*, Zeyu Deng, Hung-Chieh Cheng, Dehui Li, Jian Guo, Qiyuan He, Sen Yang, Mengning Ding, Yun-Chiao Huang, Chen Wang, Yu Huang, Xiangfeng Duan*

Science Bulletin, 2019, 64(15): 1049-1055

依靠单层石墨烯实现了对于二硫化钼器件的良好欧姆接触；并进一步以二硫化钼器件为平台，对二硫化钼中由于缺陷等产生的局域态进行了探测。

REVIEWS

Two-dimensional materials for synaptic electronics and neuromorphic systems

Shuiyuan Wang, David Wei Zhang, Peng Zhou*

Science Bulletin, 2019, 64(15): 1056-1066

首先详细描述了生物突触可塑料、赫布学习的基本概念和二维材料库及其制备工艺；随后回顾了基于二维材料的突触电子学和人造神经形态系统的最新进展，并讨论了对基于二维材料硬件实现突触电子学和构建神经形态系统的观点和远景。

Black phosphorus electronics

Hao Huang, Bei Jiang, Xuming Zou*, Xingzhong Zhao*, Lei Liao*

Science Bulletin, 2019, 64(15): 1067-1079

从层状黑磷的基本特性开始，主要探讨了如何通过调节黑磷自身性质和器件设计实现高性能黑磷电子器件；并简要探讨了黑磷在电子器件领域所面临的机遇和挑战。