Can quantum dots help to mitigate urban overheating? An experimental and modelling study

Samira Garshasbi; Shujuan Huang; Jan Valenta; Mat Santamouris

doi:10.1016/j.solener.2020.06.010

Can quantum dots help to mitigate urban overheating? An experimental and modelling study

Samira Garshasbi, Shujuan Huang, Jan Valenta, Mat Santamouris^*

^*Corresponding author for this work

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

26 Citations (Scopus)

Abstract

Application of fluorescent materials has proven to be an effective method for urban overheating mitigation due to their unique ability to re-emit a portion of the absorbed solar irradiation through photoluminescence (PL) effect. Herein, we introduced the idea of using quantum dots (QDs) as tunable fluorescent materials with potentially higher cooling capacity than their bulk counterparts and proposed a novel algorithm to model their thermo-optic behaviour under the sunlight. Our proposed method represents a major step forward in the understanding of the heat-rejection mechanism through PL effect and optimization of QDs fluorescent properties for urban overheating mitigation. Since it's complicated to distinguish surface temperature reduction caused by reflection from that of PL effect, our developed algorithm could be used as a reliable tool for precise estimation of the PL effect contribution to heat dissipation.

Original language	English
Pages (from-to)	308-316
Number of pages	9
Journal	Solar Energy
Volume	206
DOIs	https://doi.org/10.1016/j.solener.2020.06.010
Publication status	Published - Aug 2020
Externally published	Yes

Keywords

Urban overheating mitigation
Fluorescent materials
Quantum dots (QDs)
Tunable fluorescent properties
Fluorescent cooling potential

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10.1016/j.solener.2020.06.010

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title = "Can quantum dots help to mitigate urban overheating? An experimental and modelling study",

abstract = "Application of fluorescent materials has proven to be an effective method for urban overheating mitigation due to their unique ability to re-emit a portion of the absorbed solar irradiation through photoluminescence (PL) effect. Herein, we introduced the idea of using quantum dots (QDs) as tunable fluorescent materials with potentially higher cooling capacity than their bulk counterparts and proposed a novel algorithm to model their thermo-optic behaviour under the sunlight. Our proposed method represents a major step forward in the understanding of the heat-rejection mechanism through PL effect and optimization of QDs fluorescent properties for urban overheating mitigation. Since it's complicated to distinguish surface temperature reduction caused by reflection from that of PL effect, our developed algorithm could be used as a reliable tool for precise estimation of the PL effect contribution to heat dissipation.",

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AU - Garshasbi, Samira

AU - Huang, Shujuan

AU - Valenta, Jan

AU - Santamouris, Mat

PY - 2020/8

Y1 - 2020/8

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AB - Application of fluorescent materials has proven to be an effective method for urban overheating mitigation due to their unique ability to re-emit a portion of the absorbed solar irradiation through photoluminescence (PL) effect. Herein, we introduced the idea of using quantum dots (QDs) as tunable fluorescent materials with potentially higher cooling capacity than their bulk counterparts and proposed a novel algorithm to model their thermo-optic behaviour under the sunlight. Our proposed method represents a major step forward in the understanding of the heat-rejection mechanism through PL effect and optimization of QDs fluorescent properties for urban overheating mitigation. Since it's complicated to distinguish surface temperature reduction caused by reflection from that of PL effect, our developed algorithm could be used as a reliable tool for precise estimation of the PL effect contribution to heat dissipation.

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KW - Fluorescent materials

KW - Quantum dots (QDs)

KW - Tunable fluorescent properties

KW - Fluorescent cooling potential

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DO - 10.1016/j.solener.2020.06.010

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VL - 206

SP - 308

EP - 316

JO - Solar Energy

JF - Solar Energy

ER -

Can quantum dots help to mitigate urban overheating? An experimental and modelling study

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Keywords

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