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Jeong, Hu Young
UNIST Central Research Facilities (UCRF)
Research Interests
  • Soft material characterization such as graphene using a low kV Cs-corrected TEM
  • Insitu-TEM characterization of carbon-based materials using nanofactory STM holder for Li-ion battery application
  • Structural characterization of mesoporous materials using SEM & TEM
  • Interface analysis between various oxides and metals through Cs-corrected (S)TEM
  • Resistive switching mechanism of graphene oxide thin films for RRAM application

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Flexible thermochromic window based on hybridized VO2/graphene

Cited 3 times inthomson ciCited 1 times inthomson ci
Title
Flexible thermochromic window based on hybridized VO2/graphene
Author
Kim, HyeongkeunKim, YenaKim, Keun SooJeong, Hu YoungJang, A-RangHan, Seung HoYoon, Dae HoSuh, Kwang S.Shin, Hyeon SukKim, Tae YoungYang, Woo Seok
Issue Date
2013-07
Publisher
AMER CHEMICAL SOC
Citation
ACS NANO, v.7, no.7, pp.5769 - 5776
Abstract
Large-scale integration of vanadium dioxide (VO2) on mechanically flexible substrates is critical to the realization of flexible smart window films that can respond to environmental temperatures to modulate light transmittance. Until now, the formation of highly crystalline and stoichiometric VO2 on flexible substrate has not been demonstrated due to the high-temperature condition for VO2 growth. Here, we demonstrate a VO2-based thermochromic film with unprecedented mechanical flexibility by employing graphene as a versatile platform for VO 2. The graphene effectively functions as an atomically thin, flexible, yet robust support which enables the formation of stoichiometric VO2 crystals with temperature-driven phase transition characteristics. The graphene-supported VO2 was capable of being transferred to a plastic substrate, forming a new type of flexible thermochromic film. The flexible VO2 films were then integrated into the mock-up house, exhibiting its efficient operation to reduce the in-house temperature under infrared irradiation. These results provide important progress for the fabrication of flexible thermochromic films for energy-saving windows.
URI
https://scholarworks.unist.ac.kr/handle/201301/4138
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84880807652
DOI
10.1021/nn400358x
ISSN
1936-0851
Appears in Collections:
CHM_Journal Papers
UCRF_Journal Papers
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