Journal ArticleDOI
Perovskite/Black Phosphorus/MoS2 Photogate Reversed Photodiodes with Ultrahigh Light On/Off Ratio and Fast Response
Liming Wang,Xuming Zou,Jun Lin,Jiayang Jiang,Yuan Liu,Xingqiang Liu,Xu Zhao,Yufang Liu,Johnny C. Ho,Lei Liao +9 more
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TLDR
A 2D photogate photodiode is reported, which combines the benefits of 2D black phosphorus/MoS2 photodiodes with the emerging potential of perovskite, to achieve both fast response and high responsivity and has a promise for high-efficiency photodetection and photovoltaic energy conversion.Abstract:
As compared with epitaxial semiconductor devices, two-dimensional (2D) heterostructures offer alternative facile platforms for many optoelectronic devices. Among them, photovoltaic based photodetectors can give fast response, while the photogate devices can lead to high responsivity. Here, we report a 2D photogate photodiode, which combines the benefits of 2D black phosphorus/MoS2 photodiodes with the emerging potential of perovskite, to achieve both fast response and high responsivity. This device architecture is constructed based on the fast photovoltaic operation together with the high-gain photogating effect. Under reverse bias condition, the device exhibits high responsivity (11 A/W), impressive detectivity (1.3 × 1012 Jones), fast response (150/240 μs), and low dark current (3 × 10-11 A). All these results are already much better in nearly all aspects of performance than the previously reported 2D photodiodes operating in reverse bias, achieving the optimal balance between all figure-of-merits. Importantly, with a zero bias, the device can also yield high detectivity (3 × 1011 Jones), ultrahigh light on/off ratio (3 × 107), and extremely high external quantum efficiency (80%). This device architecture thus has a promise for high-efficiency photodetection and photovoltaic energy conversion.read more
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Journal ArticleDOI
Review on Recent Progress of All-Inorganic Metal Halide Perovskites and Solar Cells.
Wanchun Xiang,Wolfgang Tress +1 more
TL;DR: The potential of inorganic perovskites as stable absorbers is assessed, which opens up new perspectives toward the commercialization of in organicperovskite solar cells.
Journal ArticleDOI
Perovskite‐Based Phototransistors and Hybrid Photodetectors
Journal ArticleDOI
A review of molybdenum disulfide (MoS2) based photodetectors: from ultra-broadband, self-powered to flexible devices
TL;DR: In this paper, the authors provide a brief introduction to TMD-based photodetectors, exclusively focused on MoS2-based 2D TMDs, and analyze the factors affecting the figure of merit of a very wide range of MoS 2-based heterostructures in terms of their photoresponsivity, detectivity, response speed, and quantum efficiency along with their measurement wavelengths and incident laser power densities.
Journal ArticleDOI
Ultrafast and Sensitive Self-Powered Photodetector Featuring Self-Limited Depletion Region and Fully Depleted Channel with van der Waals Contacts
Mingjin Dai,Hongyu Chen,Fakun Wang,Mingsheng Long,Huiming Shang,Yunxia Hu,Wen Li,Chuanyang Ge,Jia Zhang,Tianyou Zhai,Yong Qing Fu,PingAn Hu +11 more
TL;DR: An ultrafast and highly sensitive self-powered photodetectors based on two-dimensional (2D) InSe, which is achieved by applying a device architecture design and generating ideal Schottky or ohmic contacts on 2D layered semiconductors, which are difficult to realize in the conventional semiconductor owing to their surface Fermi-level pinning.
References
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Journal ArticleDOI
Ultrasensitive photodetectors based on monolayer MoS2.
TL;DR: Ultraensitive monolayer MoS2 phototransistors with improved device mobility and ON current are demonstrated, showing important potential for applications in MoS 2-based integrated optoelectronic circuits, light sensing, biomedical imaging, video recording and spectroscopy.
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Ultrafast graphene photodetector
TL;DR: This work demonstrates ultrafast transistor-based photodetectors made from single- and few-layer graphene that do not degrade for optical intensity modulations up to 40 GHz and suggests that the intrinsic bandwidth may exceed 500 GHz.
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Hybrid graphene-quantum dot phototransistors with ultrahigh gain
Gerasimos Konstantatos,Michela Badioli,Louis Gaudreau,Johann Osmond,Maria Bernechea,F. Pelayo García de Arquer,Fabio Gatti,Frank H. L. Koppens +7 more
TL;DR: A gain of ∼10(8) electrons per photon and a responsivity of ∼ 10(7) A W(-1) in a hybrid photodetector that consists of monolayer or bilayer graphene covered with a thin film of colloidal quantum dots is demonstrated.
Journal ArticleDOI
High-detectivity polymer photodetectors with spectral response from 300 nm to 1450 nm.
Xiong Gong,Minghong Tong,Yangjun Xia,Wanzhu Cai,Ji Sun Moon,Yong Cao,Gang Yu,Chan-Long Shieh,Boo Nilsson,Alan J. Heeger +9 more
TL;DR: This work demonstrates polymer photodetectors with broad spectral response fabricated by using a small-band-gap semiconducting polymer blended with a fullerene derivative that can exceed the response of an inorganic semiconductor detector at liquid helium temperature.
Journal ArticleDOI
Fast and Broadband Photoresponse of Few-Layer Black Phosphorus Field-Effect Transistors
Michele Buscema,Dirk J. Groenendijk,Sofya I. Blanter,Gary A. Steele,Herre S. J. van der Zant,Andres Castellanos-Gomez +5 more
TL;DR: The ambipolar behavior coupled to the fast and broadband photodetection make few-layer black phosphorus a promising 2D material for photodetsection across the visible and near-infrared part of the electromagnetic spectrum.