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- W3084049076 abstract "Lateral homojunctions made of two-dimensional (2D) layered materials are promising for optoelectronic and electronic applications. Here, we report the lateral WSe2-WSe2 homojunction photodiodes formed spontaneously by thickness modulation in which there are unique band structures of a unilateral depletion region. The electrically tunable junctions can be switched from n–n to p–p diodes, and the corresponding rectification ratio increases from about 1 to 1.2 × 104. In addition, an obvious photovoltaic behavior is observed at zero gate voltage, which exhibits a large open voltage of 0.49 V and a short-circuit current of 0.125 nA under visible light irradiation. In addition, due to the unilateral depletion region, the diode can achieve a high detectivity of 4.4 × 1010 Jones and a fast photoresponse speed of 0.18 ms at Vg = 0 and Vds = 0. The studies not only demonstrated the great potential of the lateral homojunction photodiodes for a self-power photodetector but also allowed for the development of other functional devices, such as a nonvolatile programmable diode for logic rectifiers." @default.
- W3084049076 created "2020-09-14" @default.
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- W3084049076 date "2020-09-10" @default.
- W3084049076 modified "2023-10-16" @default.
- W3084049076 title "A Self-Powered Photovoltaic Photodetector Based on a Lateral WSe<sub>2</sub>-WSe<sub>2</sub> Homojunction" @default.
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- W3084049076 doi "https://doi.org/10.1021/acsami.0c11456" @default.
- W3084049076 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32909433" @default.
- W3084049076 hasPublicationYear "2020" @default.
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