Present perspectives of broadband photodetectors based on nanobelts, nanoribbons, nanosheets and the emerging 2D materials

Dhanabalan, Sathish Chander; Ponraj, Joice Sophia; Zhang, Han; Bao, Qiaoliang

doi:10.1039/c5nr09111j

Cited by 245 publications

(172 citation statements)

References 207 publications

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“…There are several important factors to judge the performance of photodetectors, which are photoresponsivity, photoresponse rate, and light on/off ratio. [53,54] The photoresponsivity (R, A W −1 ) is the ratio of photoresponse current density (I P ) to irradiated light power density (P light ), which is calculated as R = I P /P light . The photoresponse rate represents the sensitivity of the photodetector and is generally evaluated by the photoresponse time.…”

mentioning

confidence: 99%

Self‐Powered Photodetectors Based on 2D Materials

Qiao

Huang

Ren

et al. 2019

Advanced Optical Materials

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309

225

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Self‐powered photodetectors are considered as a new type of photodetectors enabling self‐powered photodetection without external power. The excellent photoresponsivity, fast photoresponse rate, low dark current, and large light on/off ratio of these photodetectors have attracted wide interest among scholars. 2D materials are widely used in self‐powered photodetectors due to their excellent optical and electrical properties, unique 2D structures, and their capabilities to exhibit excellent photodetection performance. According to the self‐driving mechanism of 2D material‐based self‐powered photodetectors, they are divided into three categories: p–n junction photodetectors, Schottky junction photodetectors, and photoelectrochemical photodetectors. From these three perspectives, the research progress of 2D material‐based self‐powered photodetectors is summarized in detail here. Research reports indicate that 2D material‐based self‐powered photodetectors have excellent self‐powered photoresponse behavior, good light on/off characteristics, and wideband spectral response ranges. The excellent photoresponse performance of 2D material‐based self‐powered photodetectors facilitates their potential applications in the field of optoelectronic devices. In particular, self‐powered photodetectors have great potential as novel emerging self‐driven optoelectronic devices. Finally, directions for the further development of 2D material‐based self‐powered photodetectors are anticipated.

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confidence: 99%

Self‐Powered Photodetectors Based on 2D Materials

Qiao

Huang

Ren

et al. 2019

Advanced Optical Materials

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309

225

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“…Compared with one dimensional (1D) and zero dimensional (0D) nanostructures, 2D nanostructures materials show great advantages in some special applications attributed to their extraordinary electrical, optical and magnetic properties [6][7][8]. Recently, various kinds of semiconductor nanostructure materials are employed in photodetectors application as the reason of their high absorption coefficient, tunable bandgap, and high quantum yield [9,10].…”

Section: Introductionmentioning

confidence: 99%

All-Inorganic Perovskite CsPb2Br5 Microsheets for Photodetector Application

Tang

Han

et al. 2018

Front. Phys.

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Lead-halide perovskites have emerged as one kind of important optoelectronic materials with excellent performance in photovoltaic and light-emitting diode applications. Herein, we reported all-inorganic perovskite CsPb 2 Br 5 microsheets prepared by a facile injection method. Through the X-ray diffraction (XRD) and Scanning Electron Microscope (SEM), it could be seen that the CsPb 2 Br 5 microsheets showed single tetragonal crystalline phase and kept uniform square shape. Moreover, the as-synthesized CsPb 2 Br 5 microsheets exhibited photoluminescence emission at 513 nm, and the UV-vis absorption spectrum further indicated the band gap of CsPb 2 Br 5 microsheets was ≈2.50 eV. Additionally, the as-fabricated CsPb 2 Br 5 microsheets based photodetector exhibited faster photoresponse characteristics of short rise time (0.71 s) and decay time (0.60 s), which demonstrated its promising application as high performance electronic and optoelectronic devices.

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“…Photodetectors are usually used in Adv. [153][154][155][156][157] Stacking the MX 2 with other 2D materials obviously enhances the performance of photodetectors. Mater.…”

Section: Photodetectorsmentioning

confidence: 99%

Recent Advances in van der Waals Heterojunctions Based on Semiconducting Transition Metal Dichalcogenides

Cheng

et al. 2018

Adv Elect Materials

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Due to the direct bandgap with coupled spin–valley physics, semiconducting MX2 (M = Mo, W; X = S, Se) materials have attracted considerable attention and have numerous proposed applications. With the development of 2D materials research, many 2D materials have been discovered, such as insulators, semiconductors, ferromagnetic semiconductors, topological insulators, metals, and ferromagnetic metals. van der Waals heterojunctions (vdWHs), based on MX2 and other 2D materials, have attracted increasing attention because of their various potential applications, such as field effect transistors, solar cells, photodetectors, light emitting diodes, and lasers. Based on the functionality of 2D materials, vdWHs are classified into six classes: MX2/semiconductors, MX2/insulators, MX2/topological insulators, MX2/ferromagnetic semiconductors, MX2/metals, and MX2/ferromagnetic metals. For each class of vdWHs, the structural, electronic, and optical properties, as well as potential applications in electronics and optoelectronics, are reviewed. Finally, an overview of perspectives and challenges regarding vdWHs based on MX2 materials is presented.

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Present perspectives of broadband photodetectors based on nanobelts, nanoribbons, nanosheets and the emerging 2D materials

Cited by 245 publications

References 207 publications

Self‐Powered Photodetectors Based on 2D Materials

Self‐Powered Photodetectors Based on 2D Materials

All-Inorganic Perovskite CsPb2Br5 Microsheets for Photodetector Application

Recent Advances in van der Waals Heterojunctions Based on Semiconducting Transition Metal Dichalcogenides

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