Near-infrared quantum cutting in Eu 3+-Yb 3+ co-doped YAG through downconversion for silicon solar cell

M. K. Lau; Jianhua Hao

doi:10.1016/j.egypro.2012.02.015

Near-infrared quantum cutting in Eu 3+-Yb 3+ co-doped YAG through downconversion for silicon solar cell

M. K. Lau, Jianhua Hao

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

26 Citations (Scopus)

Abstract

Near-infrared (NIR) quantum cutting (QC) could provide a solution to minimise the heat loss due to the thermalisation of electron-hole pairs in solar cells by converting high-energy photons to low-energy photons matching with the greatest spectral response of silicon solar cell. Europium (Eu3+) and ytterbium (Yb3+) co-doped yttrium aluminium garnet (Y3Al5O12, YAG) can be used as QC phosphor with emission in both visible and NIR regions. In this study, upon the excitation at 394 nm, the5D0? 4f6transition of Eu3+is induced, the characteristic NIR emission located at 1030 nm due to the energy transfer between of2F5/2-2F7/2levels of Yb3+, is generated. The quantum efficiency (QE) was derived to be as high as 144%. The results showed the possibility for enhancing the photovoltaic conversion efficiency of silicon-based solar cell by modifying the absorption and utilising the energy in the UV-blue part of the solar spectrum.

Original language	English
Pages (from-to)	129-134
Number of pages	6
Journal	Energy Procedia
Volume	15
DOIs	https://doi.org/10.1016/j.egypro.2012.02.015
Publication status	Published - 8 May 2012
Event	6th International Conference on Materials for Advanced Technologies, ICMAT 2011 - Singapore, Singapore Duration: 26 Jun 2011 → 1 Jul 2011

Keywords

Downconversion
Fluoresent and luminescent materials
Infrared spectroscopy
Rare-earth doped materials

ASJC Scopus subject areas

General Energy

UN SDGs

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

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10.1016/j.egypro.2012.02.015

http://hdl.handle.net/10397/31268

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abstract = "Near-infrared (NIR) quantum cutting (QC) could provide a solution to minimise the heat loss due to the thermalisation of electron-hole pairs in solar cells by converting high-energy photons to low-energy photons matching with the greatest spectral response of silicon solar cell. Europium (Eu3+) and ytterbium (Yb3+) co-doped yttrium aluminium garnet (Y3Al5O12, YAG) can be used as QC phosphor with emission in both visible and NIR regions. In this study, upon the excitation at 394 nm, the5D0? 4f6transition of Eu3+is induced, the characteristic NIR emission located at 1030 nm due to the energy transfer between of2F5/2-2F7/2levels of Yb3+, is generated. The quantum efficiency (QE) was derived to be as high as 144%. The results showed the possibility for enhancing the photovoltaic conversion efficiency of silicon-based solar cell by modifying the absorption and utilising the energy in the UV-blue part of the solar spectrum.",

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AU - Lau, M. K.

AU - Hao, Jianhua

PY - 2012/5/8

Y1 - 2012/5/8

N2 - Near-infrared (NIR) quantum cutting (QC) could provide a solution to minimise the heat loss due to the thermalisation of electron-hole pairs in solar cells by converting high-energy photons to low-energy photons matching with the greatest spectral response of silicon solar cell. Europium (Eu3+) and ytterbium (Yb3+) co-doped yttrium aluminium garnet (Y3Al5O12, YAG) can be used as QC phosphor with emission in both visible and NIR regions. In this study, upon the excitation at 394 nm, the5D0? 4f6transition of Eu3+is induced, the characteristic NIR emission located at 1030 nm due to the energy transfer between of2F5/2-2F7/2levels of Yb3+, is generated. The quantum efficiency (QE) was derived to be as high as 144%. The results showed the possibility for enhancing the photovoltaic conversion efficiency of silicon-based solar cell by modifying the absorption and utilising the energy in the UV-blue part of the solar spectrum.

AB - Near-infrared (NIR) quantum cutting (QC) could provide a solution to minimise the heat loss due to the thermalisation of electron-hole pairs in solar cells by converting high-energy photons to low-energy photons matching with the greatest spectral response of silicon solar cell. Europium (Eu3+) and ytterbium (Yb3+) co-doped yttrium aluminium garnet (Y3Al5O12, YAG) can be used as QC phosphor with emission in both visible and NIR regions. In this study, upon the excitation at 394 nm, the5D0? 4f6transition of Eu3+is induced, the characteristic NIR emission located at 1030 nm due to the energy transfer between of2F5/2-2F7/2levels of Yb3+, is generated. The quantum efficiency (QE) was derived to be as high as 144%. The results showed the possibility for enhancing the photovoltaic conversion efficiency of silicon-based solar cell by modifying the absorption and utilising the energy in the UV-blue part of the solar spectrum.

KW - Downconversion

KW - Fluoresent and luminescent materials

KW - Infrared spectroscopy

KW - Rare-earth doped materials

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DO - 10.1016/j.egypro.2012.02.015

M3 - Conference article

SN - 1876-6102

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EP - 134

JO - Energy Procedia

JF - Energy Procedia

T2 - 6th International Conference on Materials for Advanced Technologies, ICMAT 2011

Y2 - 26 June 2011 through 1 July 2011

ER -

Near-infrared quantum cutting in Eu 3+-Yb 3+ co-doped YAG through downconversion for silicon solar cell

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

More information

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