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^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

129 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/cm² and 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
Journal	Nano Letters
Volume	16
Issue number	1
Online published	28 Dec 2015
DOIs	https://doi.org/10.1021/acs.nanolett.5b03814
Publication status	Published - 13 Jan 2016
Externally published	Yes

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

SDG 7 Affordable and Clean Energy

Research Keywords

graphene
heterojunction
photovoltaic
quantum dot
solar cells

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10.1021/acs.nanolett.5b03814

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

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/cm2 and 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.",

keywords = "graphene, heterojunction, photovoltaic, quantum dot, solar cells",

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

year = "2016",

month = jan,

day = "13",

doi = "10.1021/acs.nanolett.5b03814",

language = "English",

volume = "16",

pages = "309--313",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "1",

}

TY - JOUR

T1 - Efficiency Enhancement of Silicon Heterojunction Solar Cells via Photon Management Using Graphene Quantum Dot as Downconverters

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/cm2 and 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/cm2 and 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.

KW - graphene

KW - heterojunction

KW - photovoltaic

KW - quantum dot

KW - solar cells

UR - https://www.scopus.com/pages/publications/84957596301

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84957596301&origin=recordpage

U2 - 10.1021/acs.nanolett.5b03814

DO - 10.1021/acs.nanolett.5b03814

M3 - RGC 21 - Publication in refereed journal

SN - 1530-6984

VL - 16

SP - 309

EP - 313

JO - Nano Letters

JF - Nano Letters

IS - 1

ER -

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

Abstract

UN SDGs

Research Keywords

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