Efficiency Enhancement of Silicon Heterojunction Solar Cells via Photon Management Using Graphene Quantum Dot as Downconverters

Meng Lin Tsai; Wei Chen Tu; Libin Tang; Tzu Chiao Wei; Wan Rou Wei; Shu Ping Lau; Lih Juann Chen; Jr Hau He

doi:10.1021/acs.nanolett.5b03814

Efficiency Enhancement of Silicon Heterojunction Solar Cells via Photon Management Using Graphene Quantum Dot as Downconverters

Meng Lin Tsai, Wei Chen Tu, Libin Tang, Tzu Chiao Wei, Wan Rou Wei, Shu Ping Lau, Lih Juann Chen, Jr Hau He

Research output: Journal article publication › Journal article › Academic research › peer-review

116 Citations (Scopus)

Abstract

By employing graphene quantum dots (GQDs), we have achieved a high efficiency of 16.55% in n-type Si heterojunction solar cells. The efficiency enhancement is based on the photon downconversion phenomenon of GQDs to make more photons absorbed in the depletion region for effective carrier separation, leading to the enhanced photovoltaic effect. The short circuit current and the fill factor are increased from 35.31 to 37.47 mA/cm2and 70.29% to 72.51%, respectively. The work demonstrated here holds the promise for incorporating graphene-based materials in commercially available solar devices for developing ultrahigh efficiency photovoltaic cells in the future.

Original language	English
Pages (from-to)	309-313
Number of pages	5
Journal	Nano Letters
Volume	16
Issue number	1
DOIs	https://doi.org/10.1021/acs.nanolett.5b03814
Publication status	Published - 13 Jan 2016

Keywords

graphene
heterojunction
photovoltaic
quantum dot
solar cells

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

UN SDGs

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

More information

10.1021/acs.nanolett.5b03814

http://hdl.handle.net/10397/96255

Cite this

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abstract = "By employing graphene quantum dots (GQDs), we have achieved a high efficiency of 16.55% in n-type Si heterojunction solar cells. The efficiency enhancement is based on the photon downconversion phenomenon of GQDs to make more photons absorbed in the depletion region for effective carrier separation, leading to the enhanced photovoltaic effect. The short circuit current and the fill factor are increased from 35.31 to 37.47 mA/cm2and 70.29% to 72.51%, respectively. The work demonstrated here holds the promise for incorporating graphene-based materials in commercially available solar devices for developing ultrahigh efficiency photovoltaic cells in the future.",

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author = "Tsai, {Meng Lin} and Tu, {Wei Chen} and Libin Tang and Wei, {Tzu Chiao} and Wei, {Wan Rou} and Lau, {Shu Ping} and Chen, {Lih Juann} and He, {Jr Hau}",

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AU - Tsai, Meng Lin

AU - Tu, Wei Chen

AU - Tang, Libin

AU - Wei, Tzu Chiao

AU - Wei, Wan Rou

AU - Lau, Shu Ping

AU - Chen, Lih Juann

AU - He, Jr Hau

PY - 2016/1/13

Y1 - 2016/1/13

N2 - By employing graphene quantum dots (GQDs), we have achieved a high efficiency of 16.55% in n-type Si heterojunction solar cells. The efficiency enhancement is based on the photon downconversion phenomenon of GQDs to make more photons absorbed in the depletion region for effective carrier separation, leading to the enhanced photovoltaic effect. The short circuit current and the fill factor are increased from 35.31 to 37.47 mA/cm2and 70.29% to 72.51%, respectively. The work demonstrated here holds the promise for incorporating graphene-based materials in commercially available solar devices for developing ultrahigh efficiency photovoltaic cells in the future.

AB - By employing graphene quantum dots (GQDs), we have achieved a high efficiency of 16.55% in n-type Si heterojunction solar cells. The efficiency enhancement is based on the photon downconversion phenomenon of GQDs to make more photons absorbed in the depletion region for effective carrier separation, leading to the enhanced photovoltaic effect. The short circuit current and the fill factor are increased from 35.31 to 37.47 mA/cm2and 70.29% to 72.51%, respectively. The work demonstrated here holds the promise for incorporating graphene-based materials in commercially available solar devices for developing ultrahigh efficiency photovoltaic cells in the future.

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KW - photovoltaic

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KW - solar cells

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Efficiency Enhancement of Silicon Heterojunction Solar Cells via Photon Management Using Graphene Quantum Dot as Downconverters

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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