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  1. Article

    Open Access

    Blue-shifted and strongly-enhanced light emission in transition-metal dichalcogenide twisted heterobilayers

    Moiré heterostructures produced by twisted heterojunction of transition-metal dichalcogenides are recognized as novel platforms for unique and tunable means of controlling the optical phenomena including photo...

    Jung Sun Ko, Chan Wook Jang, Won Jun Lee, Jae Kuk Kim… in npj 2D Materials and Applications (2022)

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    Article

    Optical Study of SiO2/nanocrystalline-Si Multilayers Using Ellipsometry

    Using variable-angle spectroscopic ellipsometry, we measure the pseudo-dielectric functions of as-deposited and annealed SiO2/SiOx multilayers (MLs). The SiO2(2nm)/SiOx(2nm) MLs have been prepared under various d...

    Kang-Joo Lee, Tae-Dong Kang, Hosun Lee, Seung Hui Hong… in MRS Online Proceedings Library (2004)

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    Article

    Formation of Luminescent Si Nanocrystals by High-Temperature Annealing of Ion-Beam-Sputtered Si/SiO2 Multilayers

    Si/SiO2 multilayers (MLs) have been prepared under different deposition temperatures (TS) by ion beam sputtering. The annealing at 1200°C leads to the formation of Si nanocrystals in the Si layer of MLs. The high...

    Suk-Ho Choi, Jun Sung Bae, Kyung Jung Kim, Dae Won Moon in MRS Online Proceedings Library (2004)

  4. No Access

    Article

    Charging Effect in Amorphous Silicon Quantum Dots Embedded in Silicon Nitride

    Capacitance-voltage was investigated for amorphous silicon quantum dots (a-Si QDs) embedded in a silicon nitride as a function of dot size and nitride thickness. a-Sci QDs were grown by plasma enhanced chemica...

    Nae-Man Park, Sang-Hun Jeon, Hyunsang Hwang, Suk-Ho Choi… in MRS Online Proceedings Library (2000)

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    Article

    Reversible and Irreversible Light-Induced Change of Photoluminescence in Porous Silicon

    We have investigated the light-induced change of photoluminescence(PL) and its recovery in porous silicon. The exposure of the porous silicon to continuous laser light in vacuum results in the quenching of the...

    Suk-Ho Choi, Byoung-Hun Mun in MRS Online Proceedings Library (1995)