Enhancement of power conversion efficiency in solution processed organic photovoltaic devices by embedded plasmonic gold-silica core-shell nanorods

Chemically synthesized gold-silica nanorods were incorporated into the active layer of solution processed organic photovoltaic devices to enhance the absorption of light by the surface plasmon resonance effect in metallic nanoparticles. Solution processed polymer:fullerene and small molecule:fullere...

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Main Authors: Wong, Terence Kin Shun, Xu, Xiaoyan, Sun, Xiao Wei
Other Authors: Rand, Barry P.
Format: Conference or Workshop Item
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/103839
http://hdl.handle.net/10220/20080
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1038392020-03-07T13:24:51Z Enhancement of power conversion efficiency in solution processed organic photovoltaic devices by embedded plasmonic gold-silica core-shell nanorods Wong, Terence Kin Shun Xu, Xiaoyan Sun, Xiao Wei Rand, Barry P. Adachi, Chihaya Cheyns, David van Elsbergen, Volker School of Electrical and Electronic Engineering Organic Photonics VI DRNTU::Engineering::Electrical and electronic engineering::Power electronics Chemically synthesized gold-silica nanorods were incorporated into the active layer of solution processed organic photovoltaic devices to enhance the absorption of light by the surface plasmon resonance effect in metallic nanoparticles. Solution processed polymer:fullerene and small molecule:fullerene bulk heterojunction devices were studied. The polymer donors include regioregular poly(3-hexylthiophene) (P3HT) and low bandgap poly[2,6-(4,4-bis-(2-ethylhexyl)- 4N-cyclopenta[2,1-b:3,4-b’] dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] (PCPDTBT). For the small molecule device, 7,7'-(4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b']-dithiophene-2,6-diyl)bis(6-fluoro-4-(5'-hexyl-[2,2'-bithiophen]-5-yl) benzo[c][1,2,5]thiadiazole) (p-DTS(FBTTh2)2) was used as the donor. The donors are blended with either [6,6]-phenyl- C61-butyric acid methyl ester (PC60BM) or [6,6]-phenyl-C71-butyric acid methyl ester (PC70BM). The gold-silica nanorods have an aspect ratio (length/diameter) of 3.2 and 2.3 and a shell thickness of ~10 nm. Prior to spin coating, the nanorods were added directly to the donor:acceptor blend solution in either chlorobenzene or dichlorobenzene at different weight percentage of the total donor:acceptor weight. The transverse and longitudinal surface plasmon resonance peaks of the gold-slica nanorods overlap with the absorption spectra of all three donor:acceptor blends to differing degrees. As a result, the power conversion efficiency of optimized plasmonic P3HT:PC60BM and PCPDTBT:PC70BM devices with conventional structure under AM1.5G illumination at 100mW/cm2 were increased by 9.3% (to 3.42%) and 20.8% (to 4.11%) respectively relative to the control device without nanorods. For the p-DTS(FBTTh2)2:PC70BM device, the relative improvement as compared to the control device was 24.2% (to 8.01%). Published version 2014-07-04T03:29:06Z 2019-12-06T21:21:23Z 2014-07-04T03:29:06Z 2019-12-06T21:21:23Z 2014 2014 Conference Paper Xu, X., Wong, T. K. S., & Sun, X. W. (2014). Enhancement of power conversion efficiency in solution processed organic photovoltaic devices by embedded plasmonic gold-silica core-shell nanorods. SPIE Proceedings, 9137, 91370Z-. https://hdl.handle.net/10356/103839 http://hdl.handle.net/10220/20080 10.1117/12.2051717 en © 2014 SPIE. This paper was published in SPIE Proceedings and is made available as an electronic reprint (preprint) with permission of SPIE. The paper can be found at the following official DOI: http://dx.doi.org/10.1117/12.2051717.  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering::Power electronics
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Power electronics
Wong, Terence Kin Shun
Xu, Xiaoyan
Sun, Xiao Wei
Enhancement of power conversion efficiency in solution processed organic photovoltaic devices by embedded plasmonic gold-silica core-shell nanorods
description Chemically synthesized gold-silica nanorods were incorporated into the active layer of solution processed organic photovoltaic devices to enhance the absorption of light by the surface plasmon resonance effect in metallic nanoparticles. Solution processed polymer:fullerene and small molecule:fullerene bulk heterojunction devices were studied. The polymer donors include regioregular poly(3-hexylthiophene) (P3HT) and low bandgap poly[2,6-(4,4-bis-(2-ethylhexyl)- 4N-cyclopenta[2,1-b:3,4-b’] dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] (PCPDTBT). For the small molecule device, 7,7'-(4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b']-dithiophene-2,6-diyl)bis(6-fluoro-4-(5'-hexyl-[2,2'-bithiophen]-5-yl) benzo[c][1,2,5]thiadiazole) (p-DTS(FBTTh2)2) was used as the donor. The donors are blended with either [6,6]-phenyl- C61-butyric acid methyl ester (PC60BM) or [6,6]-phenyl-C71-butyric acid methyl ester (PC70BM). The gold-silica nanorods have an aspect ratio (length/diameter) of 3.2 and 2.3 and a shell thickness of ~10 nm. Prior to spin coating, the nanorods were added directly to the donor:acceptor blend solution in either chlorobenzene or dichlorobenzene at different weight percentage of the total donor:acceptor weight. The transverse and longitudinal surface plasmon resonance peaks of the gold-slica nanorods overlap with the absorption spectra of all three donor:acceptor blends to differing degrees. As a result, the power conversion efficiency of optimized plasmonic P3HT:PC60BM and PCPDTBT:PC70BM devices with conventional structure under AM1.5G illumination at 100mW/cm2 were increased by 9.3% (to 3.42%) and 20.8% (to 4.11%) respectively relative to the control device without nanorods. For the p-DTS(FBTTh2)2:PC70BM device, the relative improvement as compared to the control device was 24.2% (to 8.01%).
author2 Rand, Barry P.
author_facet Rand, Barry P.
Wong, Terence Kin Shun
Xu, Xiaoyan
Sun, Xiao Wei
format Conference or Workshop Item
author Wong, Terence Kin Shun
Xu, Xiaoyan
Sun, Xiao Wei
author_sort Wong, Terence Kin Shun
title Enhancement of power conversion efficiency in solution processed organic photovoltaic devices by embedded plasmonic gold-silica core-shell nanorods
title_short Enhancement of power conversion efficiency in solution processed organic photovoltaic devices by embedded plasmonic gold-silica core-shell nanorods
title_full Enhancement of power conversion efficiency in solution processed organic photovoltaic devices by embedded plasmonic gold-silica core-shell nanorods
title_fullStr Enhancement of power conversion efficiency in solution processed organic photovoltaic devices by embedded plasmonic gold-silica core-shell nanorods
title_full_unstemmed Enhancement of power conversion efficiency in solution processed organic photovoltaic devices by embedded plasmonic gold-silica core-shell nanorods
title_sort enhancement of power conversion efficiency in solution processed organic photovoltaic devices by embedded plasmonic gold-silica core-shell nanorods
publishDate 2014
url https://hdl.handle.net/10356/103839
http://hdl.handle.net/10220/20080
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