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J.H. Chang

Korea Maritime and Ocean University

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Featured researches published by J.H. Chang.

Applied Physics Letters | 2009

Influence of growth mode on the structural, optical, and electrical properties of In-doped ZnO nanorods

Mina Jung; Jieun Koo; S.J. Oh; B.W. Lee; Won-Jae Lee; S.H. Ha; Young-Rae Cho; J.H. Chang

The growth mechanism of In-doped ZnO (ZnO:In) nanorods grown on AuGe/Si(111) substrates has been investigated. Unlike to general vapor-liquid-solid mechanism, the adatom kinetics on the surface determines the length-diameter relationship [L(D)], initial nuclei size (D∗), and spatial distribution of impurity atoms. The incorporated In-concentration was estimated to be within solid solubility limit of ZnO in terms of x-ray diffraction analysis, but the evolution of photoluminescence peak position and intensity revealed an evidence of extrinsic carrier increment. Hall-effect measurement was used to evaluate the carrier concentration of ZnO:In nanorods.

Physica E-low-dimensional Systems & Nanostructures | 2009

Dependence of the properties of hydrothermally grown ZnO on precursor concentration

Xiuqin Zhao; Jae Yeop Lee; C.R. Kim; J.H. Heo; C.M. Shin; Jae-Young Leem; Hyukhyun Ryu; J.H. Chang; Hong Chan Lee; Woo-Gwang Jung; Chang-Sik Son; Byoung Chul Shin; Won-Jae Lee; Swee Tiam Tan; Junliang Zhao; Xiao Wei Sun

Applied Surface Science | 2009

Effects of thermal annealing temperature and duration on hydrothermally grown ZnO nanorod arrays

X.Q. Zhao; C.R. Kim; J.Y. Lee; C.M. Shin; J.H. Heo; Jae-Young Leem; Hyukhyun Ryu; J.H. Chang; H.C. Lee; Chang-Sik Son; Byoung Chul Shin; Won Jae Lee; Woo-Gwang Jung; Swee Tiam Tan; Jun Liang Zhao; Xiao Wei Sun

Solid State Communications | 2008

Effects of annealing temperature of buffer layer on structural and optical properties of ZnO thin film grown by atomic layer deposition

C.R. Kim; J.Y. Lee; C.M. Shin; Jae-Young Leem; Hyukhyun Ryu; J.H. Chang; H.C. Lee; C.S. Son; Won Jae Lee; W.G. Jung; Swee Tiam Tan; Jun Liang Zhao; Xiao Wei Sun

Applied Surface Science | 2009

Effects of buffer layer annealing temperature on the structural and optical properties of hydrothermal grown ZnO

X.Q. Zhao; C.R. Kim; J.Y. Lee; J.H. Heo; C.M. Shin; Hyukhyun Ryu; J.H. Chang; H.C. Lee; Chang-Sik Son; Won Jae Lee; Woo-Gwang Jung; Swee Tiam Tan; J. L. Zhao; Xiao Wei Sun

Applied Surface Science | 2009

Effects of the annealing duration of the ZnO buffer layer on structural and optical properties of ZnO rods grown by a hydrothermal process

C.M. Shin; J.Y. Lee; J.H. Heo; Jong-Kil Park; C.R. Kim; Hyukhyun Ryu; J.H. Chang; Chang-Sik Son; Won Jae Lee; Swee Tiam Tan; J. L. Zhao; Xiao Wei Sun

Current Applied Physics | 2010

Influence of annealing duration on optical property and surface morphology of ZnO thin film grown by atomic layer deposition

C.R. Kim; Chee Mahn Shin; J.Y. Lee; J.H. Heo; T.M. Lee; J.H. Park; Hyukhyun Ryu; C.S. Son; J.H. Chang

Current Applied Physics | 2009

Field emission properties of indium-doped ZnO tetrapods

Mina Jung; S.H. Ha; S.J. Oh; Jieun Koo; Young-Rae Cho; H.C. Lee; Sangtae Lee; Tae-In Jeon; H. Makino; J.H. Chang

Applied Surface Science | 2011

Effects of growth duration on the structural and optical properties of ZnO nanorods grown on seed-layer ZnO/polyethylene terephthalate substrates

Y.I. Jeong; Chee Mahn Shin; J.H. Heo; Hyukhyun Ryu; Won Jae Lee; J.H. Chang; Chang-Sik Son; Jon Do Yun

Journal of Crystal Growth | 2009

Investigation on the ZnO:N films grown on (0001) and (0001) ZnO templates by plasma-assisted molecular beam epitaxy

Seunghwan Park; J.H. Chang; Tsutomu Minegishi; J.S. Park; I.H. Im; Masahiko Ito; Toshinori Taishi; Soon-Ku Hong; Dong-Cheol Oh; M. W. Cho; Takafumi Yao

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