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Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials

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All-Solution-Processed Van der Waals Heterostructures for Wafer-Scale Electronics.

Jihyun Kim¹, Dongjoon Rhee¹, Okin Song¹

¹School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea.

Advanced Materials (Deerfield Beach, Fla.)

|December 21, 2021

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This summary is machine-generated.

Solution-processed 2D van der Waals (vdW) materials enable wafer-scale heterostructures for electronic devices. This approach overcomes alignment and production challenges, paving the way for novel transistors and photodetectors.

Area of Science:

Materials Science
Nanotechnology
Condensed Matter Physics

Background:

2D van der Waals (vdW) materials offer unique electronic properties for devices.
Vertical stacking of vdW materials creates heterostructures with tunable electrical behaviors.
Practical application is hindered by precise alignment and mass production challenges.

Purpose of the Study:

To overcome limitations in fabricating vdW heterostructures.
To demonstrate wafer-scale assembly of solution-processed 2D vdW materials.
To explore diverse electronic device applications using novel assembly methods.

Main Methods:

Utilized molecular intercalation for high-yield exfoliation of micrometer-sized vdW nanosheets.
Employed lateral assembly via vdW interactions for wafer-scale thin-film formation.

Keywords:

2D nanomaterials electronics inkjet printing solution processing van der Waals heterostructures

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Integrated 1D carbon nanotubes and inkjet printing for multidimensional heterostructures and lithography-free fabrication.

Main Results:

Achieved wafer-scale vdW heterostructures through lateral and vertical assembly of solution-processed 2D materials.
Demonstrated functional electronic devices including transistors and photodetectors.
Fabricated p-n diodes and complementary logic gates using multidimensional heterostructures and inkjet printing.

Conclusions:

The developed methods enable scalable production and precise assembly of vdW heterostructures.
Solution-processed 2D vdW materials offer a viable platform for advanced electronic and optoelectronic devices.
Lithography-free fabrication using inkjet printing opens new avenues for rapid prototyping and manufacturing.