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Epitaxial growth and layer-transfer techniques for heterogeneous integration of materials for electronic and photonic devices

Abstract

The demand for improved electronic and optoelectronic devices has fuelled the development of epitaxial growth techniques for single-crystalline semiconductors. However, lattice and thermal expansion coefficient mismatch problems limit the options for growth and integration of high-efficiency electronic and photonic devices on dissimilar materials. Accordingly, advanced epitaxial growth and layer lift-off techniques have been developed to address issues relating to lattice mismatch. Here, we review epitaxial growth and layer-transfer techniques for monolithic integration of dissimilar single-crystalline materials for application in advanced electronic and photonic devices. We also examine emerging epitaxial growth techniques that involve two-dimensional materials as an epitaxial release layer and explore future integrated computing systems that could harness both advanced epitaxial growth and lift-off approaches.

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Fig. 1: Overview of heterogeneous integration of dissimilar materials for electronic and photonic applications.
Fig. 2: Conventional epitaxy techniques.
Fig. 3: Advanced epitaxy techniques.
Fig. 4: Epitaxial lift-off techniques.
Fig. 5: Demonstration of advanced heteroepitaxial techniques for heterogeneous integration of dissimilar materials onto silicon.
Fig. 6: Demonstrations of advanced epitaxial lift-off and transfer techniques for heterogeneous integration of devices onto silicon.

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Acknowledgements

We acknowledge funding from the Department of Energy, Office of Energy Efficiency and Renewable Energy, and Defense Advanced Research Projects Agency (award numbers 027049-00001 and D19AP00037).

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H.Kum, K.L., and J.K. conceived the project. All authors contributed to the writing of the manuscript.

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Correspondence to Kyusang Lee or Jeehwan Kim.

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Kum, H., Lee, D., Kong, W. et al. Epitaxial growth and layer-transfer techniques for heterogeneous integration of materials for electronic and photonic devices. Nat Electron 2, 439–450 (2019). https://doi.org/10.1038/s41928-019-0314-2

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