Solvent Engineering for High-Performance PbS Quantum Dots Solar Cells

PbS colloidal quantum dots (CQDs) solar cells have already demonstrated very impressive advances in recent years due to the development of many different techniques to tailor the interface morphology and compactness in PbS CQDs thin film. Here, n-hexane, n-octane, n-heptane, isooctane and toluene or...

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Main Authors: Rongfang Wu, Yuehua Yang, Miaozi Li, Donghuan Qin, Yangdong Zhang, Lintao Hou
Format: Article
Language:English
Published: MDPI AG 2017-07-01
Series:Nanomaterials
Subjects:
PbS
Online Access:https://www.mdpi.com/2079-4991/7/8/201
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spelling doaj-05122c25d0e949a68ea1ff23381cd7af2020-11-25T01:17:47ZengMDPI AGNanomaterials2079-49912017-07-017820110.3390/nano7080201nano7080201Solvent Engineering for High-Performance PbS Quantum Dots Solar CellsRongfang Wu0Yuehua Yang1Miaozi Li2Donghuan Qin3Yangdong Zhang4Lintao Hou5Institute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, ChinaInstitute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, ChinaSchool of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, ChinaInstitute of Polymer Optoelectronic Materials & Devices, State Key Laboratory of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, ChinaSiyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Department of Physics, Jinan University, Guangzhou 510632, ChinaSiyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Department of Physics, Jinan University, Guangzhou 510632, ChinaPbS colloidal quantum dots (CQDs) solar cells have already demonstrated very impressive advances in recent years due to the development of many different techniques to tailor the interface morphology and compactness in PbS CQDs thin film. Here, n-hexane, n-octane, n-heptane, isooctane and toluene or their hybrids are for the first time introduced as solvent for comparison of the dispersion of PbS CQDs. PbS CQDs solar cells with the configuration of PbS/TiO2 heterojunction are then fabricated by using different CQDs solution under ambient conditions. The performances of the PbS CQDs solar cells are found to be tuned by changing solvent and its content in the PbS CQDs solution. The best device could show a power conversion efficiency (PCE) of 7.64% under AM 1.5 G illumination at 100 mW cm−2 in a n-octane/isooctane (95%/5% v/v) hybrid solvent scheme, which shows a ~15% improvement compared to the control devices. These results offer important insight into the solvent engineering of high-performance PbS CQDs solar cells.https://www.mdpi.com/2079-4991/7/8/201colloidal quantum dotssolar cellsPbSsolvent engineering
collection DOAJ
language English
format Article
sources DOAJ
author Rongfang Wu
Yuehua Yang
Miaozi Li
Donghuan Qin
Yangdong Zhang
Lintao Hou
spellingShingle Rongfang Wu
Yuehua Yang
Miaozi Li
Donghuan Qin
Yangdong Zhang
Lintao Hou
Solvent Engineering for High-Performance PbS Quantum Dots Solar Cells
Nanomaterials
colloidal quantum dots
solar cells
PbS
solvent engineering
author_facet Rongfang Wu
Yuehua Yang
Miaozi Li
Donghuan Qin
Yangdong Zhang
Lintao Hou
author_sort Rongfang Wu
title Solvent Engineering for High-Performance PbS Quantum Dots Solar Cells
title_short Solvent Engineering for High-Performance PbS Quantum Dots Solar Cells
title_full Solvent Engineering for High-Performance PbS Quantum Dots Solar Cells
title_fullStr Solvent Engineering for High-Performance PbS Quantum Dots Solar Cells
title_full_unstemmed Solvent Engineering for High-Performance PbS Quantum Dots Solar Cells
title_sort solvent engineering for high-performance pbs quantum dots solar cells
publisher MDPI AG
series Nanomaterials
issn 2079-4991
publishDate 2017-07-01
description PbS colloidal quantum dots (CQDs) solar cells have already demonstrated very impressive advances in recent years due to the development of many different techniques to tailor the interface morphology and compactness in PbS CQDs thin film. Here, n-hexane, n-octane, n-heptane, isooctane and toluene or their hybrids are for the first time introduced as solvent for comparison of the dispersion of PbS CQDs. PbS CQDs solar cells with the configuration of PbS/TiO2 heterojunction are then fabricated by using different CQDs solution under ambient conditions. The performances of the PbS CQDs solar cells are found to be tuned by changing solvent and its content in the PbS CQDs solution. The best device could show a power conversion efficiency (PCE) of 7.64% under AM 1.5 G illumination at 100 mW cm−2 in a n-octane/isooctane (95%/5% v/v) hybrid solvent scheme, which shows a ~15% improvement compared to the control devices. These results offer important insight into the solvent engineering of high-performance PbS CQDs solar cells.
topic colloidal quantum dots
solar cells
PbS
solvent engineering
url https://www.mdpi.com/2079-4991/7/8/201
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AT yuehuayang solventengineeringforhighperformancepbsquantumdotssolarcells
AT miaozili solventengineeringforhighperformancepbsquantumdotssolarcells
AT donghuanqin solventengineeringforhighperformancepbsquantumdotssolarcells
AT yangdongzhang solventengineeringforhighperformancepbsquantumdotssolarcells
AT lintaohou solventengineeringforhighperformancepbsquantumdotssolarcells
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