Fabrication and characterization of graphene quantum dots thin film for reducing cross-sectional heat transfer through smart window

Tam D. Nguyen; Loo Pin Yeo; Kiw Si Yang; Tan Chiew Kei; Zhiwei Wang; Daniel Mandler; Shlomo Magdassi; Alfred Iing Yoong Tok

doi:10.1016/j.materresbull.2020.110861

Fabrication and characterization of graphene quantum dots thin film for reducing cross-sectional heat transfer through smart window

Tam D. Nguyen^*, Loo Pin Yeo, Kiw Si Yang, Tan Chiew Kei, Zhiwei Wang, Daniel Mandler, Shlomo Magdassi, Alfred Iing Yoong Tok

^*Corresponding author for this work

Institute of Chemistry

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

5 Scopus citations

Abstract

Graphene and its derivatives have been reported as materials with excellent electrical and thermal conductivity, allowing for various promising applications. In particular, the large-scale surface coating of graphene-based materials can be employed to minimize cross-sectional heat transfer through the glass window. This study introduces a facile and cost-effective method to fabricate graphene quantum dots (GQDs) thin film on Fluorine-doped Tin Oxide (FTO) glass via casting of the GQDs dispersion and stabilizing with poly-vinyl-pyrrolidone (PVP). The thin film possesses excellent optical properties of GQDs and allows more than 80 % of visible transmittance. The presence of the GQDs thin film shows effective reduction in the cross-sectional thermal diffusivity of FTO glass, from 0.55 mm²/s to zero when measured with laser flash over a 4-second period. This low cost and eco-friendly GQDs thin film will be a promising material for heat management in smart window applications.

Original language	American English
Article number	110861
Journal	Materials Research Bulletin
Volume	127
DOIs	https://doi.org/10.1016/j.materresbull.2020.110861
State	Published - Jul 2020

Bibliographical note

Funding Information:
This research is supported by grants from the National Research Foundation, Prime Minister's Office, Singapore under its Campus of Research Excellence and Technological Enterprise (CREATE) Program.

Funding Information:
This research is supported by grants from the National Research Foundation, Prime Minister’s Office, Singapore under its Campus of Research Excellence and Technological Enterprise (CREATE) Program.

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

Cross-Sectional heat transfer
Graphene quantum dots
Poly-Vinyl-Pyrrolidone
Smart window
Visible transmittance

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10.1016/j.materresbull.2020.110861

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title = "Fabrication and characterization of graphene quantum dots thin film for reducing cross-sectional heat transfer through smart window",

abstract = "Graphene and its derivatives have been reported as materials with excellent electrical and thermal conductivity, allowing for various promising applications. In particular, the large-scale surface coating of graphene-based materials can be employed to minimize cross-sectional heat transfer through the glass window. This study introduces a facile and cost-effective method to fabricate graphene quantum dots (GQDs) thin film on Fluorine-doped Tin Oxide (FTO) glass via casting of the GQDs dispersion and stabilizing with poly-vinyl-pyrrolidone (PVP). The thin film possesses excellent optical properties of GQDs and allows more than 80 % of visible transmittance. The presence of the GQDs thin film shows effective reduction in the cross-sectional thermal diffusivity of FTO glass, from 0.55 mm2/s to zero when measured with laser flash over a 4-second period. This low cost and eco-friendly GQDs thin film will be a promising material for heat management in smart window applications.",

keywords = "Cross-Sectional heat transfer, Graphene quantum dots, Poly-Vinyl-Pyrrolidone, Smart window, Visible transmittance",

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note = "Funding Information: This research is supported by grants from the National Research Foundation, Prime Minister's Office, Singapore under its Campus of Research Excellence and Technological Enterprise (CREATE) Program. Funding Information: This research is supported by grants from the National Research Foundation, Prime Minister{\textquoteright}s Office, Singapore under its Campus of Research Excellence and Technological Enterprise (CREATE) Program. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

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AU - Wang, Zhiwei

AU - Mandler, Daniel

AU - Magdassi, Shlomo

AU - Tok, Alfred Iing Yoong

N1 - Funding Information: This research is supported by grants from the National Research Foundation, Prime Minister's Office, Singapore under its Campus of Research Excellence and Technological Enterprise (CREATE) Program. Funding Information: This research is supported by grants from the National Research Foundation, Prime Minister’s Office, Singapore under its Campus of Research Excellence and Technological Enterprise (CREATE) Program. Publisher Copyright: © 2020 Elsevier Ltd

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N2 - Graphene and its derivatives have been reported as materials with excellent electrical and thermal conductivity, allowing for various promising applications. In particular, the large-scale surface coating of graphene-based materials can be employed to minimize cross-sectional heat transfer through the glass window. This study introduces a facile and cost-effective method to fabricate graphene quantum dots (GQDs) thin film on Fluorine-doped Tin Oxide (FTO) glass via casting of the GQDs dispersion and stabilizing with poly-vinyl-pyrrolidone (PVP). The thin film possesses excellent optical properties of GQDs and allows more than 80 % of visible transmittance. The presence of the GQDs thin film shows effective reduction in the cross-sectional thermal diffusivity of FTO glass, from 0.55 mm2/s to zero when measured with laser flash over a 4-second period. This low cost and eco-friendly GQDs thin film will be a promising material for heat management in smart window applications.

AB - Graphene and its derivatives have been reported as materials with excellent electrical and thermal conductivity, allowing for various promising applications. In particular, the large-scale surface coating of graphene-based materials can be employed to minimize cross-sectional heat transfer through the glass window. This study introduces a facile and cost-effective method to fabricate graphene quantum dots (GQDs) thin film on Fluorine-doped Tin Oxide (FTO) glass via casting of the GQDs dispersion and stabilizing with poly-vinyl-pyrrolidone (PVP). The thin film possesses excellent optical properties of GQDs and allows more than 80 % of visible transmittance. The presence of the GQDs thin film shows effective reduction in the cross-sectional thermal diffusivity of FTO glass, from 0.55 mm2/s to zero when measured with laser flash over a 4-second period. This low cost and eco-friendly GQDs thin film will be a promising material for heat management in smart window applications.

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Fabrication and characterization of graphene quantum dots thin film for reducing cross-sectional heat transfer through smart window

Abstract

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Keywords

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