2D van der Waals Heterojunction of Organic and Inorganic Monolayers for High Responsivity Phototransistors

Zhao Baolin; Gan Ziyang; Johnson ManuelNajafidehaghani EmadRejek TobiasGeorge AntonyFink Rainer H.Turchanin AndreyHalik Marcus

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2D van der Waals Heterojunction of Organic and Inorganic Monolayers for High Responsivity Phototransistors

机译：2D van der Waals Heterojunction of Organic and Inorganic Monolayers for High Responsivity Phototransistors

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Van der Waals (vdW) heterostructures composing of organic molecules with inorganic 2D crystals open the door to fabricate various promising hybrid devices. Here, a fully ordered organic self-assembled monolayer (SAM) to construct hybrid organic-inorganic vdW heterojunction phototransistors for highly sensitive light detection is used. The heterojunctions, formed by layering MoS2 monolayer crystals onto organic [12-(benzo[b]benzo[4,5]thieno[2,3-d]thiophen-2-yl)dodecyl)]phosphonic acid SAM, are characterized by Raman and photoluminescence spectroscopy as well as Kelvin probe force microscopy. Remarkably, this vdW heterojunction transistor exhibits a superior photoresponsivity of 475 A W-1 and enhanced external quantum efficiency of 1.45 x 10(5)%, as well as an extremely low dark photocurrent in the pA range. This work demonstrates that hybridizing SAM with 2D materials can be a promising strategy for fabricating diversified optoelectronic devices with unique properties.

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《Advanced functional materials》 |2021年第42期|2105444.1-2105444.7|共7页
作者
Zhao Baolin; Gan Ziyang; Johnson ManuelNajafidehaghani EmadRejek TobiasGeorge AntonyFink Rainer H.Turchanin AndreyHalik Marcus;
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Friedrich Alexander Univ Erlangen Nurnberg FAU, Interdisziplinaren Zentrums Nanostrukturierte Fil, Inst Polymer Mat, Organ Mat & Devices OMD, Cauerstr 3, D-91058 Erlangen, Germany;

Friedrich Schiller Univ Jena, Inst Phys Chem, Lessingstr 10, D-07743 Jena, Germany|Friedrich Schiller Univ Jena, Abbe Ctr Photon, Lessingstr 10, D-07743 Jena, Germany;

Friedrich Alexander Univ Erlangen NOrnberg FAU, Phys Chem 2, Egerlandstr 3, D-91058 Erlangen, Germany;

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正文语种英语
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charge transfer; organic-inorganic hybrid; photodetection; self-assembled monolayer; transition metal dichalcogenides; van der Waals heterojunction;

2D van der Waals Heterojunction of Organic and Inorganic Monolayers for High Responsivity Phototransistors

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