Yu Xiang
Yu Xiang
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Metalorganic vapor phase epitaxy of large size CdTe grains on mica through chemical and van der Waals interactions
Abstract High quality heteroepitaxy of CdTe is challenging due to lattice mismatches of CdTe with many substrates. Herein, we demonstrate the epitaxial growth of single crystalline CdTe films, in multilevel island format, on mica using metalorganic chemical vapor deposition, regardless of large in-plane lattice mismatch (∼13%) between CdTe(111) and mica(001).
Dibyajyoti Mohanty
,
Zonghuan Lu
,
Xin Sun
,
Yu Xiang
,
Yiping Wang
,
Debjit Ghoshal
,
Jian Shi
,
Lei Gao
,
Sufei Shi
,
Morris Washington
,
Gwo-Ching Wang
,
Toh-Ming Lu
,
Ishwara Bhat
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DOI
Remote phononic effects in epitaxial ruddlesden–popper halide perovskites
Abstract Despite their weak nature, van der Waals (vdW) interactions have been shown to effectively control the optoelectronic and vibrational properties of layered materials. However, how vdW effects exist in Ruddlesden–Popper layered halide perovskites remains unclear.
Zhizhong Chen
,
Yiping Wang
,
Xin Sun
,
Yu Xiang
,
Yang Hu
,
Jie Jiang
,
Jing Feng
,
Yi-Yang Sun
,
Xi Wang
,
Gwo-Ching Wang
,
Toh-Ming Lu
,
Hanwei Gao
,
Esther A Wertz
,
Jian Shi
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DOI
Nontrivial strength of van derWaals epitaxial interaction in soft perovskites
Abstract The van der Waals (vdW) bond is traditionally believed to be orders of magnitude lower than the typical chemical bond (i.e., ionic, metallic, or covalent), and hence the effects caused by a vdW interface are thought to be trivial.
Yiping Wang
,
Lei Gao
,
Yunbo Yang
,
Yu Xiang
,
Zhizhong Chen
,
Yongqi Dong
,
Hua Zhou
,
Zhonghou Cai
,
Gwo-Ching Wang
,
Jian Shi
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DOI
van der Waals Epitaxy of Antimony Islands, Sheets, and Thin Films on Single-Crystalline Graphene
Abstract Antimony (Sb) nanostructures, including islands, sheets, and thin films, of high crystallinity were epitaxially grown on single-crystalline graphene through van der Waals interactions. Two types of graphene substrates grown by chemical vapor deposition were used, the as-grown graphene on Cu(111)/c-sapphire and the transferred graphene on SiO2/Si.
Xin Sun
,
Zonghuan Lu
,
Yu Xiang
,
Yiping Wang
,
Jian Shi
,
Gwo-Ching Wang
,
Morris A. Washington
,
Toh-Ming Lu
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DOI
van der Waals epitaxy of SnS film on single crystal graphene buffer layer on amorphous SiO2/Si
Azimuthal RHEED and XRD studies about single and poly-crystal graphene.
Yu Xiang
,
F. Guo
,
X. Sun
,
Z. Lu- D. Mohanty
,
I. Bhat
,
M. Washington
,
T.-M. Lu
,
G.-C. Wang
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DOI
Diffusion-Controlled Epitaxy of Large Area Coalesced WSe2 Monolayers on Sapphire
Abstract A multistep diffusion-mediated process was developed to control the nucleation density, size, and lateral growth rate of WSe2 domains on c-plane sapphire for the epitaxial growth of large area monolayer films by gas source chemical vapor deposition (CVD).
Xiaotian Zhang
,
Tanushree H Choudhury
,
Mikhail Chubarov
,
Yu Xiang
,
Bhakti Jariwala
,
Fu Zhang
,
Nasim Alem
,
Gwo-Ching Wang
,
Joshua A Robinson
,
Joan M Redwing
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DOI
van der Waals epitaxy of Ge films on mica
Abstract To date, many materials have been successfully grown on substrates through van der Waals epitaxy without adhering to the constraint of lattice matching as is required for traditional chemical epitaxy.
AJ Littlejohn
,
Yu Xiang
,
E Rauch
,
T-M Lu
,
G-C Wang
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DOI
Revealing the Crystalline Integrity of Wafer-Scale Graphene on SiO2/Si: An Azimuthal RHEED Approach
Abstract The symmetry of graphene is usually determined by a low-energy electron diffraction (LEED) method when the graphene is on the conductive substrates, but LEED cannot handle graphene transferred to SiO2/Si substrates due to the charging effect.
Zonghuan Lu
,
Xin Sun
,
Yu Xiang
,
Morris A. Washington
,
Gwo-Ching Wang
,
Toh-Ming Lu
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DOI
Reflection high-energy electron diffraction measurements of reciprocal space structure of 2D materials
Invention of RHEED 2D reciprocal space mapping.
Yu Xiang
,
F. Guo
,
T.-M. Lu
,
G.-C. Wang
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DOI
Humidity sensing using vertically oriented arrays of ReS2 nanosheets deposited on an interdigitated gold electrode
Abstract We report a novel humidity sensor featuring vertically oriented arrays of ReS2 nanosheets grown on an interdigitated gold electrode by chemical vapor deposition. The vertical orientation of the nanosheets is important since it maximizes the exposed surface area for water adsorption/desorption.
Aijun Yang
,
Jian Gao
,
Baichang Li
,
Jiawei Tan
,
Yu Xiang
,
Tushar Gupta
,
Lu Li
,
Shravan Suresh
,
Juan Carlos Idrobo
,
Toh-Ming Lu
,
Mingzhe Rong
,
Nikhil Koratkar
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DOI
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