Date

Place

[51-4]
12:15 ~ 12:40
Title:[Invited] A Route Towards III-V Energy Harvesting and Optoelectronic Devices on Arbitrary Substrates
Xiaodong Yan, Debarghya Sarkar, Jubin Hazra, and Rehan Kapadia (Univ. of Southern California, U.S.A.)
Abstract: We demonstrate the versatility of a previously developed low-cost compound semiconductor growth technique termed thin-film vapor-liquid-solid1,2 (TF-VLS) growth. Specifically, we show a variety of optoelectronic and energy devices with geometries and material combinations unavailable to traditional vapor-phase growth techniques. Critically, this is enabled by the confinement of a liquid metal solvent layer, enabling precise control over the position and shape of nuclei on non-epitaxial and hetero-epitaxial substrates. Unlike vapor-phase processes, in which control over the shape of a growing nuclei is extremely challenging and primarily defined by the growth rates of various crystal facets, the TF-VLS process enables full control over nuclei, enabling single crystal electron and photon devices regardless of substrate microstructure. In particular, we demonstrate both single-crystalline and poly-crystalline devices for energy harvesting devices as well as generation and detection of light.
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