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Published November 27, 2019 | Supplemental Material
Journal Article Open

Inorganic Phototropism in Electrodeposition of Se-Te


Photoelectrochemical deposition of Se–Te on isolated Au islands using an unstructured, incoherent beam of light produces growth of Se–Te alloy toward the direction of the incident light beam. Full-wave electromagnetic simulations of light absorption indicated that the induced spatial growth anisotropy was a function of asymmetric absorption in the evolving deposit. Inorganic phototropic growth is analogous to biological systems such as palm trees that exhibit phototropic growth wherein physical extension of the plant guides the crown toward the time-averaged position of the sun, to maximize solar harvesting.

Additional Information

© 2019 American Chemical Society. Received: October 1, 2019; Published: November 7, 2019. This work was supported by the National Science Foundation under Award Number DMR1905963. The authors gratefully acknowledge K. Hamann for insightful discussions and R. Gerhart, N. Hart, and B. Markowicz for assistance with photoelectrochemical cell fabrication. MCM acknowledges a Graduate Research Fellowship from the National Science Foundation. The authors declare no competing financial interest.

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