Size and shape control of monoclinic vanadium dioxide thermochromic particles for smart window applications

Hee Jung Kim; Dong Kyu Roh; Hyun Suk Jung; Dae Sung Kim

doi:10.1016/j.ceramint.2018.11.036

Size and shape control of monoclinic vanadium dioxide thermochromic particles for smart window applications

Hee Jung Kim
, Dong Kyu Roh
, Hyun Suk Jung
, Dae Sung Kim

Department of Advanced Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Monoclinic vanadium dioxide (VO₂ (M)) was synthesized by the thermolysis of vanadyl ethylene glycolate, which was obtained easily by the precipitation of a vanadium precursor in ethylene glycol solution under atmospheric conditions. The particle size and shape were easily controlled by altering the molar concentration of the vanadium precursor. Thereafter, VO₂ (M) composite films were prepared by mixing with poly(vinylpyrrolidone). A high concentration of the vanadium precursor produced small spherical nanoparticles ≈ 30 nm in size, while lower concentrations afforded large rod-like particles. The composite films fabricated with the VO₂ (M) nanoparticles exhibited high luminous transmittance (T_lum = 79%) and IR modulation ability (ΔT_IR = 5.6%). This work demonstrates that these VO₂ (M) composite films show promise for application in smart windows.

Original language	English
Pages (from-to)	4123-4127
Number of pages	5
Journal	Ceramics International
Volume	45
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2018.11.036
State	Published - 15 Feb 2019

Keywords

Energy efficiency
High luminous transmittance
Size and shape tuning
Solar modulation ability
Thermochromic coating
VO (M) particle

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10.1016/j.ceramint.2018.11.036

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title = "Size and shape control of monoclinic vanadium dioxide thermochromic particles for smart window applications",

abstract = "Monoclinic vanadium dioxide (VO2 (M)) was synthesized by the thermolysis of vanadyl ethylene glycolate, which was obtained easily by the precipitation of a vanadium precursor in ethylene glycol solution under atmospheric conditions. The particle size and shape were easily controlled by altering the molar concentration of the vanadium precursor. Thereafter, VO2 (M) composite films were prepared by mixing with poly(vinylpyrrolidone). A high concentration of the vanadium precursor produced small spherical nanoparticles ≈ 30 nm in size, while lower concentrations afforded large rod-like particles. The composite films fabricated with the VO2 (M) nanoparticles exhibited high luminous transmittance (Tlum = 79\%) and IR modulation ability (ΔTIR = 5.6\%). This work demonstrates that these VO2 (M) composite films show promise for application in smart windows.",

keywords = "Energy efficiency, High luminous transmittance, Size and shape tuning, Solar modulation ability, Thermochromic coating, VO (M) particle",

author = "Kim, \{Hee Jung\} and Roh, \{Dong Kyu\} and Jung, \{Hyun Suk\} and Kim, \{Dae Sung\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd and Techna Group S.r.l.",

year = "2019",

month = feb,

day = "15",

doi = "10.1016/j.ceramint.2018.11.036",

language = "English",

volume = "45",

pages = "4123--4127",

journal = "Ceramics International",

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TY - JOUR

T1 - Size and shape control of monoclinic vanadium dioxide thermochromic particles for smart window applications

AU - Kim, Hee Jung

AU - Roh, Dong Kyu

AU - Jung, Hyun Suk

AU - Kim, Dae Sung

PY - 2019/2/15

Y1 - 2019/2/15

N2 - Monoclinic vanadium dioxide (VO2 (M)) was synthesized by the thermolysis of vanadyl ethylene glycolate, which was obtained easily by the precipitation of a vanadium precursor in ethylene glycol solution under atmospheric conditions. The particle size and shape were easily controlled by altering the molar concentration of the vanadium precursor. Thereafter, VO2 (M) composite films were prepared by mixing with poly(vinylpyrrolidone). A high concentration of the vanadium precursor produced small spherical nanoparticles ≈ 30 nm in size, while lower concentrations afforded large rod-like particles. The composite films fabricated with the VO2 (M) nanoparticles exhibited high luminous transmittance (Tlum = 79%) and IR modulation ability (ΔTIR = 5.6%). This work demonstrates that these VO2 (M) composite films show promise for application in smart windows.

AB - Monoclinic vanadium dioxide (VO2 (M)) was synthesized by the thermolysis of vanadyl ethylene glycolate, which was obtained easily by the precipitation of a vanadium precursor in ethylene glycol solution under atmospheric conditions. The particle size and shape were easily controlled by altering the molar concentration of the vanadium precursor. Thereafter, VO2 (M) composite films were prepared by mixing with poly(vinylpyrrolidone). A high concentration of the vanadium precursor produced small spherical nanoparticles ≈ 30 nm in size, while lower concentrations afforded large rod-like particles. The composite films fabricated with the VO2 (M) nanoparticles exhibited high luminous transmittance (Tlum = 79%) and IR modulation ability (ΔTIR = 5.6%). This work demonstrates that these VO2 (M) composite films show promise for application in smart windows.

KW - Energy efficiency

KW - High luminous transmittance

KW - Size and shape tuning

KW - Solar modulation ability

KW - Thermochromic coating

KW - VO (M) particle

UR - https://www.scopus.com/pages/publications/85056487083

U2 - 10.1016/j.ceramint.2018.11.036

DO - 10.1016/j.ceramint.2018.11.036

M3 - Article

AN - SCOPUS:85056487083

SN - 0272-8842

VL - 45

SP - 4123

EP - 4127

JO - Ceramics International

JF - Ceramics International

IS - 3

ER -

Size and shape control of monoclinic vanadium dioxide thermochromic particles for smart window applications

Abstract

Keywords

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