Broadband light absorption enhancement in moth's eye nanostructured organic solar cells

Weixia Lan; Yanxia Cui; Qingyi Yang; Ming Fai Lo; Chun Sing Lee; Fu Rong ZHU

doi:10.1063/1.4921993

Broadband light absorption enhancement in moth's eye nanostructured organic solar cells

Weixia Lan, Yanxia Cui, Qingyi Yang, Ming Fai Lo, Chun Sing Lee, Fu Rong ZHU^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

27 Citations (Scopus)

Abstract

A comprehensive study on inverted organic solar cells (OSCs) with a moth's eye nanostructured (MEN) active layer was carried out. Performance of the MEN-based OSCs and the corresponding control planar cells, fabricated with blend of poly[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-bA] dithiophene-2, 6-diyl][3-fluoro-2-[(2- ethylhexyl) carbonyl]thieno[3,4-b]-thiophenediyl] (PTB7):[6,6]- phenyl-C70- butyric-acid-methyl-ester (PC₇₀BM) was analyzed. The efficiency of the MEN-based OSCs was optimized by adjusting the height of MEN pattern in the active layer. Our experimental and theoretical results reveal that the MEN pattern enhances light absorption in the PTB7:PC₇₀BM active layer, especially over the long wavelength region. This leads to a 7.8% increase in short circuit current density and a 6.1% increase in power conversion efficiency over those of the control planar cell.

Original language	English
Article number	057164
Journal	AIP Advances
Volume	5
Issue number	5
DOIs	https://doi.org/10.1063/1.4921993
Publication status	Published - 1 May 2015

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Physics and Astronomy(all)

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title = "Broadband light absorption enhancement in moth's eye nanostructured organic solar cells",

abstract = "A comprehensive study on inverted organic solar cells (OSCs) with a moth's eye nanostructured (MEN) active layer was carried out. Performance of the MEN-based OSCs and the corresponding control planar cells, fabricated with blend of poly[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-bA] dithiophene-2, 6-diyl][3-fluoro-2-[(2- ethylhexyl) carbonyl]thieno[3,4-b]-thiophenediyl] (PTB7):[6,6]- phenyl-C70- butyric-acid-methyl-ester (PC70BM) was analyzed. The efficiency of the MEN-based OSCs was optimized by adjusting the height of MEN pattern in the active layer. Our experimental and theoretical results reveal that the MEN pattern enhances light absorption in the PTB7:PC70BM active layer, especially over the long wavelength region. This leads to a 7.8% increase in short circuit current density and a 6.1% increase in power conversion efficiency over those of the control planar cell.",

author = "Weixia Lan and Yanxia Cui and Qingyi Yang and Lo, {Ming Fai} and Lee, {Chun Sing} and ZHU, {Fu Rong}",

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year = "2015",

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doi = "10.1063/1.4921993",

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T1 - Broadband light absorption enhancement in moth's eye nanostructured organic solar cells

AU - Lan, Weixia

AU - Cui, Yanxia

AU - Yang, Qingyi

AU - Lo, Ming Fai

AU - Lee, Chun Sing

AU - ZHU, Fu Rong

PY - 2015/5/1

Y1 - 2015/5/1

N2 - A comprehensive study on inverted organic solar cells (OSCs) with a moth's eye nanostructured (MEN) active layer was carried out. Performance of the MEN-based OSCs and the corresponding control planar cells, fabricated with blend of poly[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-bA] dithiophene-2, 6-diyl][3-fluoro-2-[(2- ethylhexyl) carbonyl]thieno[3,4-b]-thiophenediyl] (PTB7):[6,6]- phenyl-C70- butyric-acid-methyl-ester (PC70BM) was analyzed. The efficiency of the MEN-based OSCs was optimized by adjusting the height of MEN pattern in the active layer. Our experimental and theoretical results reveal that the MEN pattern enhances light absorption in the PTB7:PC70BM active layer, especially over the long wavelength region. This leads to a 7.8% increase in short circuit current density and a 6.1% increase in power conversion efficiency over those of the control planar cell.

AB - A comprehensive study on inverted organic solar cells (OSCs) with a moth's eye nanostructured (MEN) active layer was carried out. Performance of the MEN-based OSCs and the corresponding control planar cells, fabricated with blend of poly[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-bA] dithiophene-2, 6-diyl][3-fluoro-2-[(2- ethylhexyl) carbonyl]thieno[3,4-b]-thiophenediyl] (PTB7):[6,6]- phenyl-C70- butyric-acid-methyl-ester (PC70BM) was analyzed. The efficiency of the MEN-based OSCs was optimized by adjusting the height of MEN pattern in the active layer. Our experimental and theoretical results reveal that the MEN pattern enhances light absorption in the PTB7:PC70BM active layer, especially over the long wavelength region. This leads to a 7.8% increase in short circuit current density and a 6.1% increase in power conversion efficiency over those of the control planar cell.

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U2 - 10.1063/1.4921993

DO - 10.1063/1.4921993

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SN - 2158-3226

VL - 5

JO - AIP Advances

JF - AIP Advances

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ER -

Broadband light absorption enhancement in moth's eye nanostructured organic solar cells

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