Journal ArticleDOI
Halide-Induced Self-Limited Growth of Ultrathin Nonlayered Ge Flakes for High-Performance Phototransistors
TLDR
Excitingly, a Ge flake-based phototransistor shows excellent performances such as a high hole mobility, a high responsivity, and fast response rates, suggesting its great potential in the applications of electronics and optoelectronics.Abstract:
2D nonlayered materials have attracted intensive attention due to their unique surface structure and novel physical properties. However, it is still a great challenge to realize the 2D planar structures of nonlayered materials owing to the naturally intrinsic covalent bonds. Ge is one of them with cubic structure impeding its 2D anisotropic growth. Here, the ultrathin single-crystalline Ge flakes as thin as 8.5 nm were realized via halide-assisted self-limited CVD growth. The growth mechanism has been confirmed by experiments and theoretical calculations, which can be attributed to the preferential growth of the (111) plane with the lowest formation energy and the giant interface distortion effect of the Cl–Ge motif. Excitingly, a Ge flake-based phototransistor shows excellent performances such as a high hole mobility of ∼263 cm2 V–1 s–1, a high responsivity of ∼200 A/W, and fast response rates (τrise = 70 ms, τdecay = 6 ms), suggesting its great potential in the applications of electronics and optoelectr...read more
Citations
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Journal ArticleDOI
Recent Advances in the Functional 2D Photonic and Optoelectronic Devices
Journal ArticleDOI
Two-Dimensional Hybrid Perovskite-Type Ferroelectric for Highly Polarization-Sensitive Shortwave Photodetection
Lina Li,Xitao Liu,Yaobin Li,Zhiyun Xu,Zhenyue Wu,Shiguo Han,Kewen Tao,Maochun Hong,Junhua Luo,Zhihua Sun +9 more
TL;DR: This work reports a new 2D hybrid perovskite ferroelectric, [CH3(CH2)3 NH3]2(CH3NH3)Pb2Br7 (1), which exhibits a superior Ps of 3.6 μC/cm2 and a relatively wide bandgap and sheds light on new functionalities for future optoelectronic application of hybridPerovskites.
Journal ArticleDOI
Electronic Modulation of Non-van der Waals 2D Electrocatalysts for Efficient Energy Conversion.
Hui Wang,Hui Wang,Hui Wang,Jianmei Chen,Yanping Lin,Xiaohan Wang,Jianmin Li,Yao Li,Lijun Gao,Labao Zhang,Dongliang Chao,Xu Xiao,Jong-Min Lee +12 more
TL;DR: In this article, the progress of non-van der Waals (non-vdW) 2D materials with numerous chemical bonds in all three dimensions and novel chemical and electronic properties beyond those of vdW 2D material have been studied increasingly over the past decades.
Journal ArticleDOI
2D material broadband photodetectors
Jiandong Yao,Guowei Yang +1 more
TL;DR: This review provides a comprehensive overview of the latest evolution of broadband photodetectors (BBPDs) based on 2D materials (2DMs) and provides several viewpoints for the future development of this burgeoning field.
Journal ArticleDOI
Controlled Growth and Thickness‐Dependent Conduction‐Type Transition of 2D Ferrimagnetic Cr 2 S 3 Semiconductors
Fangfang Cui,Xiaoxu Zhao,Junjie Xu,Bin Tang,Qiuyu Shang,Jianping Shi,Yahuan Huan,Jianhui Liao,Qing Chen,Yanglong Hou,Qing Zhang,Stephen J. Pennycook,Yanfeng Zhang +12 more
TL;DR: Light is shed on the scalable synthesis, transport, and magnetic properties explorations of 2D magnetic materials through thickness-tunable synthesis of nanothick rhombohedral Cr2 S3 flakes on a chemically inert mica substrate via a facile chemical vapor deposition route.
References
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Journal ArticleDOI
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