Center for Integrated Nanostructure Physics

[New journal!]

Young-Min Kim, Sung Bo Lee, Jaekwang Lee and Sang Ho Oh [Nanoscale 11(17), May 7 , 8281-8292(2019)]

Direct observation of an electrically degenerate interface layer in a GaN/sapphire heterostructure An electrically degenerate layer deteriorates the optoelectric performance of a wide band gap semiconductor grown on an insulator substrate. This detrimental effect can be passively avoided by using a buffer layer to harbor various lattice defects. However, the longstanding scientific questions rega...

[New journal!]

Qinke Wu, Taehwan Jeong, Sanwoo Park, Jia Sun, Hyunmin Kang, Taegeun Yoon, Young Jae Song [Chemical Communications 55(17), Feb. 28 , 2473-2476(2019)

Two-dimensional semiconducting and single-crystalline antimony trioxide directly-grown on monolayer graphene The first successful synthesis and characterization of single-crystalline two-dimensional (2D) semiconducting antimony tri oxide (Sb2O3) by direct chemical v***r deposition (CVD) growth on monolayer graphene is presented herein. The Sb2O3 flakes on graphene are regular triangles with smooth edges an...

[New journal!]

Sidi Fan, Quoc An Vu, Sanghyub Lee, Thanh Luan Phan, Gyeongtak Han, Young-Min Kim, Woo Jong Yu, Young Hee Lee [ACS Nano 13(7), Jul. 23 , 8193-8201(2019) ]

Tunable Negative Differential Resistance in van der Waals Heterostructures at Room Temperature by Tailoring the Interface Vertically stacked two-dimensional van der Waals (vdW) heterostructures, used to obtain homogeneity and band steepness at interfaces, exhibit promising performance for band-to-band tunneling (BTBT) devices. Esaki tunnel diodes based on vdW heterostructures, however, yield poor current density and pe...

[New journal!]

Kwangnam Yu, NGUYEN Van Luan, Tae Soo Kim, Jiwon Jeon, Jiho Kim, Pilkyung Moon, Young Hee Lee, and E. J. Choi [Physical Review B 99, Jun. 21 , 241405(R)-(2019) ]

Gate tunable optical absorption and band structure of twisted bilayer graphene We report the infrared transmission measurement on electrically gated twisted bilayer graphene. The optical absorption spectrum clearly manifests dramatic changes such as the splitting of the interlinear-band absorption step, the shift of the inter-van Hove singularity transition peak, and the emerg...

[New journal!]

B**g Gyu Shin, Dae Hwan Boo, Bumsub Song, Sunam Jeon, Minwoo Kim, Sangwoo Park, Eun Soo An, Jun Sung Kim, Young Jae Song, Young Hee Lee [ACS Nano 13(6), Jun. 25 , 6662-6669(2019) ]

Single-Crystalline Monolayer Graphene Wafer on Dielectric Substrate of SiON without Metal Catalysts Many scientific and engineering efforts have been made to realize graphene electronics by fully utilizing intrinsic properties of ideal graphene for last decades. The most technical huddles come from the absence of wafer-scale graphene with a single-crystallinity on dielectric substrates. Here, we r...

[New journal!]

Hyojung Kim, Hye Ryung Byun & Mun Seok Jeong [Scientific Reports 9(2022), Feb. 14 (2019) ]

Synthesis and Characterization of Multiple-Cation Rb(MAFA)PbI3 Perovskite Single Crystals We synthesized multiple-cation Rb(MAFA)PbI3 perovskite single crystals for the first time. The effect of Rb+ substitution was systemically investigated, and the addition of 1.5 M 5% RbI was the optimum condition to obtain high-quality Rb(MAFA)PbI3 single crystals. Lattice shrinkage occurred in the...

[New Journal!]
'Anomalous Conductance near Percolative Metal-Insulator Transition in Monolayer MoS2 at Low Voltage Regime'

Byoung Hee Moon, Jung Jun Bae, Gang Hee Han, Hyun Kim, Homin Choi, Young Hee Lee [ACS Nano Accepted, May. 24 (2019) ]

[New Journal!]
NiranjanmurthiLingappan, Bing Li, Tae Hoon Lee, Young Hee Lee [Electrochimica Acta 313, Aug. 1 , 41-47(2019) ]

Designing bifunctional catalysts for oxygen reduction/evolution reactions for high efficiency and long lifetime Designing efficient and durable bifunctional oxygen catalyst to replace expensive Pt catalysts in oxygen reduction reaction and oxygen evolution react…

[New Journal!]
Hye Min Oh, Chulho Park, Seungho Bang, Seok Joon Yun, Ngoc Thanh Duong, Mun Seok Jeong [Advanced Electronic Materials 5(2), Feb. , 1800608-(2019) ]

onlinelibrary.wiley.com

[New Journal!]
Doyoung Kim, Keunsik Lee, Meeree Kim, Yongshin Kim, Hyoyoung Lee [Electrochimica Acta 300, Mar. 20 , 461-469(2019) ]

Carbon-based asymmetric capacitor for high-performance energy storage devices Carbon-based materials are widely used in energy storage research, as attractive materials with high conductivity, low cost, and high availability. Ho…

[New Journal!]
Seunghun Lee, Ho-Yeol Park, Su Jae Kim, Hyangsook Lee, Ik-Jae Lee, Chae Ryong Cho, Eunha Lee, Se-Young Jeong, and Young Hee Lee [ACS Applied Nano Materials Online Published(2019) ]

Inverse Stranski–Krastanov Growth in Single-Crystalline Sputtered Cu Thin Films for Wafer-Scale Device Applications | ACS Applied Nano Materials Fruit Quality and Bioactive Compounds with Antioxidant Activity of Tomatoes Grown On-Farm: Comparison of Organic and Conventional Management Systems

[New Journal!]
Taewoo Ha, Inhee Park, Kyung Ik Sim, Howon Lee, Jong-Sung Bae, Su Jae Kim, Jong Phil Kim, Teun-Teun Kim, Jae Hoon Kim, Joon Ik Jang, ANd Se-Young Jeong [APL Materials 7(3), Mar. 27 , 031115-(2019) ]

Single-crystalline Cu2O thin films of optical quality as obtained by the oxidation of single-crystal Cu thin films at low temperature High-quality, single-crystal-like Cu2O thin films of various thicknesses (10 nm–45 nm) were prepared at a low temperature (150 °C) by controlling layer-by-layer oxidation of wafer-scale Cu thin films sputtered along the (111) direction using a pure single-crystal Cu target. The cross-sectional im...