• Title/Summary/Keyword: materials science

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Direct Printable Nanowire p-n Junction device

  • Lee, Tae-Il;Choi, Won-Jin;Kar, Jyoti Prakash;Moon, Kyung-Ju;Lee, Min-Jung;Jun, Joo-Hee;Baik, Hong-Koo;Myoung, Jae-Min
    • Proceedings of the Materials Research Society of Korea Conference
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    • 2010.05a
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    • pp.30.2-30.2
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    • 2010

  • Nano-scale p-n junction can generate various nano-scale functional devices such as nanowire light emitting diode, nanowire solar cell, and nanowire sensor. The core shell type nanowire p-n junction has been considered for the high efficient devices in many previous reports. On the other hand, although device efficiency is relatively lower, the cross bar type p-n junction has simple topological structure, suggested by C.M. Lieber group, to integrate easily many p-n junction devices in one board. In this study, for the integration of the cross bar nanowire p-n junction device, a simple fabrication route, employed dielectrophoretic array and direct printing techniques, was demonstrated by the successful fabrication and programmable integration of the nanowire cross bar p-n junction solar cell. This direct printing process will give the single nanowire solar cell the opportunity of the integration on the circuit board with other nanowire functional devices.

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Fabrication of three-dimensional electrical patterns by swollen-off process: An evolution of the lift-off process

  • Mansouri, Mariam S.;An, Boo Hyun;Shibli, Hamda Al;Yassi, Hamad Al;Alkindi, Tawaddod Saif;Lee, Ji Sung;Kim, Young Keun;Ryu, Jong Eun;Choi, Daniel S.
    • Current Applied Physics
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    • v.18 no.11
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    • pp.1235-1239
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    • 2018

  • We present a novel process to fabricate three-dimensional (3D) metallic patterns from 3D printed polymeric structures utilizing different hygroscopic swelling behavior of two different polymeric materials. 3D patterns are printed with two different polymers as cube shape. The surface of the 3D printed polymeric structures is plated with nickel by an electroless plating method. The nickel patterns on the surface of the 3D printed cube shape structure are formed by removing sacrificial layers using the difference in the rate of hygroscopic swelling between two printing polymer materials. The hygroscopic behavior on the interfaced structure was modeled with COMSOL Multiphysics. The surface and electrical properties of the fabricated three-dimensional patterns were analyzed and characterized.

  • https://doi.org/10.1016/j.cap.2018.06.001 인용 KSCI