Journal ArticleDOI
2D Cu 9 S 5 /PtS 2 /WSe 2 Double Heterojunction Bipolar Transistor with High Current Gain.
Sanjun Yang,Lejing Pi,Liang Li,Kailang Liu,Ke Pei,Wei Han,Fakun Wang,Fuwei Zhuge,Huiqiao Li,Gang Cheng,Tianyou Zhai +10 more
TLDR
In this paper, a double heterojunction bipolar transistor (DHBT) with high-doping-density widebandgap 2D Cu9 S5 is used as emitter and narrowbandgap PtS2 as base.Abstract:
Bipolar junction transistor (BJT) as one important circuit element is now widely used in high-speed computation and communication for its capability of high-power signal amplification. 2D materials and their heterostructures are promising in building high-amplification and high-frequency BJTs because they can be naturally thin and highly designable in tailoring components properties. However, currently the low emitter injection efficiency results in only moderate current gain achieved in the pioneer researches, severely restraining its future development. Herein, it is shown that an elaborately designed double heterojunction bipolar transistor (DHBT) can greatly promote the injection efficiency, improving the current gain by order of magnitude. In this DHBT high-doping-density wide-bandgap 2D Cu9 S5 is used as emitter and narrow-bandgap PtS2 as base. This heterostructure efficiently suppresses the reverse electron flux from base and increase the injection efficiency. Consequently, the DHBT achieves an excellent current gain (β ≈ 910). This work systematically explores the electrical behavior of 2D materials based DHBT, and provides deep insight of the architecture design for building high gain DHBT, which may promote the applications of 2Dheterojunctions in the fields of integrated circuits.read more
Citations
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Journal ArticleDOI
Self-Powered Photodetectors Based on Stacked WSe2/Graphene/SnS2 p-g-n Heterostructures
Hemiao Wang,Yurui Wang,Xin Li,Xiaolian Liu,Xin Zheng,Yueqin Shi,Minxuan Xu,Jian Zhang,Qi Zhang +8 more
TL;DR: In this article , a self-powered photodetectors based on WSe2/graphene/snS2 vdW heterojunctions were assembled and the impact of adding graphene interlayer on its performance was investigated.
Journal ArticleDOI
Si-CMOS-compatible 2D PtSe2-based self-driven photodetector with ultrahigh responsivity and specific detectivity
TL;DR: In this article , the authors report an unprecedented high performance, air-stable, self-driven, and broadband room-temperature photodetectors based on the architecture of the PtSe2/ultrathin SiO2/Si heterojunction.
Journal ArticleDOI
Photodetectors Based on MoS2/MAPbBr3 van der Waals Heterojunction
Fanxu Meng,Zhong-Fan Xu,Yonghong Zeng,Changhao Wang,Ya'nan Zou,Swelm Wageh,Ahmed A. Al-Ghamdi,Zhinan Guo,Han Zhang +8 more
TL;DR: In this paper , a van der Waals heterojunction photodetector is presented, where MoS flakes are transferred to the surface of MAPbBr3 single crystals.
Journal ArticleDOI
A novel 3D floral spherical composites with double p-n heterojunctions for enhanced photocatalytic hydrogen production under visible light
TL;DR: In this article , a 3D flower spherical ZnCdS/CuS/cu9S5 with a double p-n tandem heterojunction mechanism was designed and constructed for the first time by solvothermal method and physical mixing process.
Journal ArticleDOI
Peel-and-Stick Integration of Atomically Thin Nonlayered PtS Semiconductors for Multidimensionally Stretchable Electronic Devices.
Sang Sub Han,Tae-Jun Ko,Mashiyat Sumaiya Shawkat,Alex Shum,Tae-Sung Bae,Hee-Suk Chung,Jin Yi Ma,Shahid Sattar,Shihab Bin Hafiz,Mohammad Al Mahfuz,Sohrab Alex Mofid,Andreas Larsson,Kyu Hwan Oh,Dong Kyun Ko,Yeon Kyoung Jung +14 more
TL;DR: In this paper , a peel-and-stick approach was proposed to transform a non-layered 3D PtS crystal into a freestanding 2D-like membrane for electromechanical applications.
References
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Journal ArticleDOI
2D materials and van der Waals heterostructures
TL;DR: Two-dimensional heterostructures with extended range of functionalities yields a range of possible applications, and spectrum reconstruction in graphene interacting with hBN allowed several groups to study the Hofstadter butterfly effect and topological currents in such a system.
Journal ArticleDOI
Van der Waals heterostructures and devices
TL;DR: In this paper, the authors review the recent progress and challenges of 2D van der Waals interactions and offer a perspective on the exploration of 2DLM-based vdWHs for future application in electronics and optoelectronics.
Journal ArticleDOI
A library of atomically thin metal chalcogenides
Jiadong Zhou,Junhao Lin,Xiangwei Huang,Yao Zhou,Yu Chen,Juan Xia,Hong Wang,Yu Xie,Huimei Yu,Jincheng Lei,Di Wu,Fucai Liu,Qundong Fu,Qingsheng Zeng,Chuang-Han Hsu,Changli Yang,Li Lu,Ting Yu,Zexiang Shen,Hsin Lin,Hsin Lin,Boris I. Yakobson,Qian Liu,Kazu Suenaga,Guangtong Liu,Zheng Liu +25 more
TL;DR: Molten-salt-assisted chemical vapour deposition is used to synthesize a wide variety of two-dimensional transition-metal chalcogenides and elaborate how the salt decreases the melting point of the reactants and facilitates the formation of intermediate products, increasing the overall reaction rate.
Journal ArticleDOI
Lateral epitaxial growth of two-dimensional layered semiconductor heterojunctions
Xidong Duan,Chen Wang,Jonathan C. Shaw,Rui Cheng,Yu Chen,Honglai Li,Xueping Wu,Ying Tang,Qinling Zhang,Anlian Pan,Jianhui Jiang,Ruqing Yu,Yu Huang,Xiangfeng Duan +13 more
TL;DR: An important advance in the development of layered semiconductor heterostructures, an essential step towards achieving functional electronics and optoelectronics.
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