Omnidirectional and Broadband Light Absorption Enhancement in 2-D Photonic-Structured Organic Solar Cells

Weixia Lan; Yiwen Wang; Jai Singh; Fu Rong ZHU

doi:10.1021/acsphotonics.7b01573

Omnidirectional and Broadband Light Absorption Enhancement in 2-D Photonic-Structured Organic Solar Cells

Weixia Lan, Yiwen Wang, Jai Singh, Fu Rong ZHU^*

^*Corresponding author for this work

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

43 Citations (Scopus)

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Abstract

The effect of 2-D photonic structures on omnidirectional and broadband light absorption enhancement in organic solar cells (OSCs) is analyzed using a combination of theoretical simulation and experimental optimization. The photonic structures in the active layer, with a blend system 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]:[6,6]-phenyl-C70- butyric-acid-methyl-ester (PTB7:PC₇₀BM), were prepared by the nanoimprint method. It shows that the 2-D photonic structures enable not only broadband but also omnidirectional absorption enhancements in the PTB7:PC₇₀BM-based OSCs over a broader angle range of the incident light, leading to >11% increase in the power conversion efficiency, as compared to an optimal planar control cell. A weak angular dependency on light absorption is a unique feature of the photonic-structured OSCs, which is useful for different applications.

Original language	English
Pages (from-to)	1144-1150
Number of pages	7
Journal	ACS Photonics
Volume	5
Issue number	3
Early online date	9 Jan 2018
DOIs	https://doi.org/10.1021/acsphotonics.7b01573
Publication status	Published - 21 Mar 2018

Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Biotechnology
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

User-Defined Keywords

FDTD simulation
light trapping
nanoimprint
omnidirectional and broadband light absorption enhancement
Organic solar cell
photonic structure

UN SDGs

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

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10.1021/acsphotonics.7b01573

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title = "Omnidirectional and Broadband Light Absorption Enhancement in 2-D Photonic-Structured Organic Solar Cells",

abstract = "The effect of 2-D photonic structures on omnidirectional and broadband light absorption enhancement in organic solar cells (OSCs) is analyzed using a combination of theoretical simulation and experimental optimization. The photonic structures in the active layer, with a blend system 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]:[6,6]-phenyl-C70- butyric-acid-methyl-ester (PTB7:PC70BM), were prepared by the nanoimprint method. It shows that the 2-D photonic structures enable not only broadband but also omnidirectional absorption enhancements in the PTB7:PC70BM-based OSCs over a broader angle range of the incident light, leading to >11% increase in the power conversion efficiency, as compared to an optimal planar control cell. A weak angular dependency on light absorption is a unique feature of the photonic-structured OSCs, which is useful for different applications.",

keywords = "FDTD simulation, light trapping, nanoimprint, omnidirectional and broadband light absorption enhancement, Organic solar cell, photonic structure",

author = "Weixia Lan and Yiwen Wang and Jai Singh and ZHU, {Fu Rong}",

note = "Funding Information: This work was financially supported by the Research Grants Council of Hong Kong Special Administrative Region, China, Theme-Based Research Scheme (T23-713/11); General Research Fund (12303114, 12302817); Hong Kong Baptist University Interinstitutional Collaborative Research Scheme (RC-ICRS/15-16/04); and Shenzhen Peacock Plan (KQTD20140630110339343).",

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N1 - Funding Information: This work was financially supported by the Research Grants Council of Hong Kong Special Administrative Region, China, Theme-Based Research Scheme (T23-713/11); General Research Fund (12303114, 12302817); Hong Kong Baptist University Interinstitutional Collaborative Research Scheme (RC-ICRS/15-16/04); and Shenzhen Peacock Plan (KQTD20140630110339343).

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N2 - The effect of 2-D photonic structures on omnidirectional and broadband light absorption enhancement in organic solar cells (OSCs) is analyzed using a combination of theoretical simulation and experimental optimization. The photonic structures in the active layer, with a blend system 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]:[6,6]-phenyl-C70- butyric-acid-methyl-ester (PTB7:PC70BM), were prepared by the nanoimprint method. It shows that the 2-D photonic structures enable not only broadband but also omnidirectional absorption enhancements in the PTB7:PC70BM-based OSCs over a broader angle range of the incident light, leading to >11% increase in the power conversion efficiency, as compared to an optimal planar control cell. A weak angular dependency on light absorption is a unique feature of the photonic-structured OSCs, which is useful for different applications.

AB - The effect of 2-D photonic structures on omnidirectional and broadband light absorption enhancement in organic solar cells (OSCs) is analyzed using a combination of theoretical simulation and experimental optimization. The photonic structures in the active layer, with a blend system 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]:[6,6]-phenyl-C70- butyric-acid-methyl-ester (PTB7:PC70BM), were prepared by the nanoimprint method. It shows that the 2-D photonic structures enable not only broadband but also omnidirectional absorption enhancements in the PTB7:PC70BM-based OSCs over a broader angle range of the incident light, leading to >11% increase in the power conversion efficiency, as compared to an optimal planar control cell. A weak angular dependency on light absorption is a unique feature of the photonic-structured OSCs, which is useful for different applications.

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Omnidirectional and Broadband Light Absorption Enhancement in 2-D Photonic-Structured Organic Solar Cells

Abstract

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