Electrochromic Films Produced by Ultrasonic Spray Deposition of Tungsten Oxide Nanoparticles

Chi Ping Li; Colin A. Wolden; Anne C. Dillon; Robert C. Tenent

doi:10.1016/j.solmat.2011.03.034

Electrochromic Films Produced by Ultrasonic Spray Deposition of Tungsten Oxide Nanoparticles

Chi Ping Li, Colin A. Wolden, Anne C. Dillon, Robert C. Tenent

Materials Science

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

50 Scopus Citations

Abstract

Crystalline tungsten oxide nanoparticles (NPs) were synthesized by hot-wire chemical vapor deposition (HWCVD) and subsequently employed to form electrochromic thin films using ultrasonic spray deposition. Particle morphology may be tuned using HWCVD synthesis parameters including filament temperature, substrate temperature, and oxygen partial pressure. The electrochromic performance of films derived from three sets of NPs was characterized by performing cyclic voltammetry in direct registry with measurements of optical transmission. The coloration efficiency scaled with the specific surface area, and values obtained from films derived from HWCVD NPs were as high as 38 cm ²/C, comparing favorably with leading WO ₃ films produced by sputtering. The HWCVD-based material formed continuous films that were mesoporous in nature, while the larger commercial NPs did not form homogeneous coatings. In addition to size, XRD and Raman analysis revealed a correlation between performance and the presence of the ε-monoclinic crystal phase.

Original language	American English
Pages (from-to)	50-55
Number of pages	6
Journal	Solar Energy Materials and Solar Cells
Volume	99
DOIs	https://doi.org/10.1016/j.solmat.2011.03.034 https://doi.org/10.1016/j.solmat.2011.03.034
State	Published - Apr 2012

NREL Publication Number

NREL/JA-5900-51329

Keywords

Electrochromic window
Low-cost processing
Nanomaterials
Tungsten oxide
Ultrasonic spray deposition

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Electrochromic Films Produced by Ultrasonic Spray Deposition of Tungsten Oxide Nanoparticles",

abstract = "Crystalline tungsten oxide nanoparticles (NPs) were synthesized by hot-wire chemical vapor deposition (HWCVD) and subsequently employed to form electrochromic thin films using ultrasonic spray deposition. Particle morphology may be tuned using HWCVD synthesis parameters including filament temperature, substrate temperature, and oxygen partial pressure. The electrochromic performance of films derived from three sets of NPs was characterized by performing cyclic voltammetry in direct registry with measurements of optical transmission. The coloration efficiency scaled with the specific surface area, and values obtained from films derived from HWCVD NPs were as high as 38 cm 2/C, comparing favorably with leading WO 3 films produced by sputtering. The HWCVD-based material formed continuous films that were mesoporous in nature, while the larger commercial NPs did not form homogeneous coatings. In addition to size, XRD and Raman analysis revealed a correlation between performance and the presence of the ε-monoclinic crystal phase.",

keywords = "Electrochromic window, Low-cost processing, Nanomaterials, Tungsten oxide, Ultrasonic spray deposition",

author = "Li, {Chi Ping} and Wolden, {Colin A.} and Dillon, {Anne C.} and Tenent, {Robert C.}",

year = "2012",

month = apr,

doi = "10.1016/j.solmat.2011.03.034",

language = "American English",

volume = "99",

pages = "50--55",

journal = "Solar Energy Materials and Solar Cells",

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publisher = "Elsevier B.V.",

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T1 - Electrochromic Films Produced by Ultrasonic Spray Deposition of Tungsten Oxide Nanoparticles

AU - Li, Chi Ping

AU - Wolden, Colin A.

AU - Dillon, Anne C.

AU - Tenent, Robert C.

PY - 2012/4

Y1 - 2012/4

N2 - Crystalline tungsten oxide nanoparticles (NPs) were synthesized by hot-wire chemical vapor deposition (HWCVD) and subsequently employed to form electrochromic thin films using ultrasonic spray deposition. Particle morphology may be tuned using HWCVD synthesis parameters including filament temperature, substrate temperature, and oxygen partial pressure. The electrochromic performance of films derived from three sets of NPs was characterized by performing cyclic voltammetry in direct registry with measurements of optical transmission. The coloration efficiency scaled with the specific surface area, and values obtained from films derived from HWCVD NPs were as high as 38 cm 2/C, comparing favorably with leading WO 3 films produced by sputtering. The HWCVD-based material formed continuous films that were mesoporous in nature, while the larger commercial NPs did not form homogeneous coatings. In addition to size, XRD and Raman analysis revealed a correlation between performance and the presence of the ε-monoclinic crystal phase.

AB - Crystalline tungsten oxide nanoparticles (NPs) were synthesized by hot-wire chemical vapor deposition (HWCVD) and subsequently employed to form electrochromic thin films using ultrasonic spray deposition. Particle morphology may be tuned using HWCVD synthesis parameters including filament temperature, substrate temperature, and oxygen partial pressure. The electrochromic performance of films derived from three sets of NPs was characterized by performing cyclic voltammetry in direct registry with measurements of optical transmission. The coloration efficiency scaled with the specific surface area, and values obtained from films derived from HWCVD NPs were as high as 38 cm 2/C, comparing favorably with leading WO 3 films produced by sputtering. The HWCVD-based material formed continuous films that were mesoporous in nature, while the larger commercial NPs did not form homogeneous coatings. In addition to size, XRD and Raman analysis revealed a correlation between performance and the presence of the ε-monoclinic crystal phase.

KW - Electrochromic window

KW - Low-cost processing

KW - Nanomaterials

KW - Tungsten oxide

KW - Ultrasonic spray deposition

UR - http://www.scopus.com/inward/record.url?scp=84856510502&partnerID=8YFLogxK

U2 - 10.1016/j.solmat.2011.03.034

DO - 10.1016/j.solmat.2011.03.034

M3 - Article

AN - SCOPUS:84856510502

SN - 0927-0248

VL - 99

SP - 50

EP - 55

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

ER -

Electrochromic Films Produced by Ultrasonic Spray Deposition of Tungsten Oxide Nanoparticles

Abstract

NREL Publication Number

Keywords

UN SDGs

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