A silicon nanocrystal/polymer nanocomposite as a down-conversion layer in organic and hybrid solar cells

V. Svrcek; T. Yamanari; D. Mariotti; S. Mitra; T. Velusamy; K. Matsubara

doi:10.1039/c5nr02703a

A silicon nanocrystal/polymer nanocomposite as a down-conversion layer in organic and hybrid solar cells

V. Svrcek^*, T. Yamanari, D. Mariotti, S. Mitra, T. Velusamy, K. Matsubara

^*Corresponding author for this work

Design, Manufacturing And Engineering Management

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Abstract

Silicon nanocrystal (Si-nc) down-conversion is demonstrated to enhance organic and hybrid organic/inorganic bulk heterojunction solar cells based on PTB7:[70]PCBM bulk heterojunction devices. Surfactant free surface-engineered Si-ncs can be integrated into the device architecture to be optically active and provide a means of effective down-conversion of blue photons (high energy photons below ∼450 nm) into red photons (above ∼680 nm) leading to 24% enhancement of the photocurrent under concentrated sunlight. We also demonstrate that the down-conversion effect under 1-sun is enhanced in the case of hybrid solar cells where engineered Si-ncs are also included in the active layer.

Original language	English
Pages (from-to)	11566-11574
Number of pages	9
Journal	Nanoscale
Volume	7
Issue number	27
Early online date	9 Jun 2015
DOIs	https://doi.org/10.1039/c5nr02703a
Publication status	Published - 21 Jul 2015

Funding

This work was partially supported by a NEDO project, the Royal Society International Exchange Scheme (IE120884), the Leverhulme International Network (IN-2012-136) and EPSRC (EP/K022237/1). DM also acknowledges the support of the JSPS Bridge Fellowship and SM acknowledges the financial support of the University of Ulster Vice-Chancellor Studentship.

Keywords

silicon nanocrystals
solar cells
down-conversion

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10.1039/c5nr02703aLicence: CC BY 3.0

Svrcek-etal-Nanoscale-2015-A-silicon-nanocrystal-polymer-nanocomposite-as-a-down-conversion-layerFinal published version, 1.63 MBLicence: CC BY 3.0

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abstract = "Silicon nanocrystal (Si-nc) down-conversion is demonstrated to enhance organic and hybrid organic/inorganic bulk heterojunction solar cells based on PTB7:[70]PCBM bulk heterojunction devices. Surfactant free surface-engineered Si-ncs can be integrated into the device architecture to be optically active and provide a means of effective down-conversion of blue photons (high energy photons below ∼450 nm) into red photons (above ∼680 nm) leading to 24\% enhancement of the photocurrent under concentrated sunlight. We also demonstrate that the down-conversion effect under 1-sun is enhanced in the case of hybrid solar cells where engineered Si-ncs are also included in the active layer.",

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AU - Yamanari, T.

AU - Mariotti, D.

AU - Mitra, S.

AU - Velusamy, T.

AU - Matsubara, K.

PY - 2015/7/21

Y1 - 2015/7/21

N2 - Silicon nanocrystal (Si-nc) down-conversion is demonstrated to enhance organic and hybrid organic/inorganic bulk heterojunction solar cells based on PTB7:[70]PCBM bulk heterojunction devices. Surfactant free surface-engineered Si-ncs can be integrated into the device architecture to be optically active and provide a means of effective down-conversion of blue photons (high energy photons below ∼450 nm) into red photons (above ∼680 nm) leading to 24% enhancement of the photocurrent under concentrated sunlight. We also demonstrate that the down-conversion effect under 1-sun is enhanced in the case of hybrid solar cells where engineered Si-ncs are also included in the active layer.

AB - Silicon nanocrystal (Si-nc) down-conversion is demonstrated to enhance organic and hybrid organic/inorganic bulk heterojunction solar cells based on PTB7:[70]PCBM bulk heterojunction devices. Surfactant free surface-engineered Si-ncs can be integrated into the device architecture to be optically active and provide a means of effective down-conversion of blue photons (high energy photons below ∼450 nm) into red photons (above ∼680 nm) leading to 24% enhancement of the photocurrent under concentrated sunlight. We also demonstrate that the down-conversion effect under 1-sun is enhanced in the case of hybrid solar cells where engineered Si-ncs are also included in the active layer.

KW - silicon nanocrystals

KW - solar cells

KW - down-conversion

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JF - Nanoscale

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A silicon nanocrystal/polymer nanocomposite as a down-conversion layer in organic and hybrid solar cells

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