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Published April 15, 2015 | Supplemental Material
Journal Article Open

Localized Laser-Based Photohydrothermal Synthesis of Functionalized Metal-Oxides

Abstract

We discuss the rapid in situ hydrothermal synthesis of metal oxide materials based on the photothermal superheating of light-absorbing metal layers for simple and facile on-demand placement of semiconductor materials with micrometer-scale lateral resolution. Localized heating from pulsed and focused laser illumination enables ultrafast growth of metal oxide materials with high spatiotemporal precision in aqueous precursor solution. Among many possible electronic and optoelectronic applications, the proposed method can be used for laser-based in situ real-time soldering of separated metal structures and electrodes with functionalized semiconductor materials. Resistive electrical interconnections of metal strip lines as well as sensitive UV detection using photohydrothermally grown metal oxide bumps are experimentally demonstrated.

Additional Information

© 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Received: November 27, 2014; Revised: January 12, 2015; Published online: February 12, 2015. This work was supported by the Center for Integrated Smart Sensors and the Center for Advanced Meta-Materials funded by the Ministry of Science, ICT and Future Planning as Global Frontier Project (CISS-2012M3A6A6054191 and CAMM-2014M3A6B3063709) and the National Research Foundation of Korea (NRF) grant funded by the Korean Government (Ministry of Education and Science Technology) (2008-0062256). The authors would like to thank Prof. Jun-Bo Yoon at KAIST for his support in device fabrication.

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