Cargando…

Efficient, Stable, and Low-Cost PbS Quantum Dot Solar Cells with Cr–Ag Electrodes

PbS quantum dots (QDs) are a promising nanostructured material for solar cells. However, limited works have been done to explore the active layer thickness, layer deposition techniques, stability improvement, and cost reduction for PbS QD solar cells. We address those issues of device fabrication he...

Descripción completa

Detalles Bibliográficos
Autores principales: Khanam, Jobeda J., Foo, Simon Y., Yu, Zhibin, Liu, Tianhan, Mao, Pengsu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6780186/
https://www.ncbi.nlm.nih.gov/pubmed/31461887
http://dx.doi.org/10.3390/nano9091205
_version_ 1783457070829273088
author Khanam, Jobeda J.
Foo, Simon Y.
Yu, Zhibin
Liu, Tianhan
Mao, Pengsu
author_facet Khanam, Jobeda J.
Foo, Simon Y.
Yu, Zhibin
Liu, Tianhan
Mao, Pengsu
author_sort Khanam, Jobeda J.
collection PubMed
description PbS quantum dots (QDs) are a promising nanostructured material for solar cells. However, limited works have been done to explore the active layer thickness, layer deposition techniques, stability improvement, and cost reduction for PbS QD solar cells. We address those issues of device fabrication herein and suggest their possible solutions. In our work, to get the maximum current density from a PbS QD solar cell, we estimated the optimized active layer thickness using Matlab simulation. After that, we fabricated a high-performance and low-cost QD photovoltaic (PV) device with the simulated optimized active layer thickness. We implemented this low-cost device using a 10 mg/mL PbS concentration. Here, spin coating and drop-cast layer deposition methods were used and compared. We found that the device prepared by the spin coating method was more efficient than that by the drop cast method. The spin-coated PbS QD solar cell provided 6.5% power conversion efficiency (PCE) for the AM1.5 light spectrum. Besides this, we observed that Cr (chromium) interfaced with the Ag (Cr–Ag) electrode can provide a highly air-stable electrode.
format Online
Article
Text
id pubmed-6780186
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-67801862019-10-30 Efficient, Stable, and Low-Cost PbS Quantum Dot Solar Cells with Cr–Ag Electrodes Khanam, Jobeda J. Foo, Simon Y. Yu, Zhibin Liu, Tianhan Mao, Pengsu Nanomaterials (Basel) Article PbS quantum dots (QDs) are a promising nanostructured material for solar cells. However, limited works have been done to explore the active layer thickness, layer deposition techniques, stability improvement, and cost reduction for PbS QD solar cells. We address those issues of device fabrication herein and suggest their possible solutions. In our work, to get the maximum current density from a PbS QD solar cell, we estimated the optimized active layer thickness using Matlab simulation. After that, we fabricated a high-performance and low-cost QD photovoltaic (PV) device with the simulated optimized active layer thickness. We implemented this low-cost device using a 10 mg/mL PbS concentration. Here, spin coating and drop-cast layer deposition methods were used and compared. We found that the device prepared by the spin coating method was more efficient than that by the drop cast method. The spin-coated PbS QD solar cell provided 6.5% power conversion efficiency (PCE) for the AM1.5 light spectrum. Besides this, we observed that Cr (chromium) interfaced with the Ag (Cr–Ag) electrode can provide a highly air-stable electrode. MDPI 2019-08-27 /pmc/articles/PMC6780186/ /pubmed/31461887 http://dx.doi.org/10.3390/nano9091205 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Khanam, Jobeda J.
Foo, Simon Y.
Yu, Zhibin
Liu, Tianhan
Mao, Pengsu
Efficient, Stable, and Low-Cost PbS Quantum Dot Solar Cells with Cr–Ag Electrodes
title Efficient, Stable, and Low-Cost PbS Quantum Dot Solar Cells with Cr–Ag Electrodes
title_full Efficient, Stable, and Low-Cost PbS Quantum Dot Solar Cells with Cr–Ag Electrodes
title_fullStr Efficient, Stable, and Low-Cost PbS Quantum Dot Solar Cells with Cr–Ag Electrodes
title_full_unstemmed Efficient, Stable, and Low-Cost PbS Quantum Dot Solar Cells with Cr–Ag Electrodes
title_short Efficient, Stable, and Low-Cost PbS Quantum Dot Solar Cells with Cr–Ag Electrodes
title_sort efficient, stable, and low-cost pbs quantum dot solar cells with cr–ag electrodes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6780186/
https://www.ncbi.nlm.nih.gov/pubmed/31461887
http://dx.doi.org/10.3390/nano9091205
work_keys_str_mv AT khanamjobedaj efficientstableandlowcostpbsquantumdotsolarcellswithcragelectrodes
AT foosimony efficientstableandlowcostpbsquantumdotsolarcellswithcragelectrodes
AT yuzhibin efficientstableandlowcostpbsquantumdotsolarcellswithcragelectrodes
AT liutianhan efficientstableandlowcostpbsquantumdotsolarcellswithcragelectrodes
AT maopengsu efficientstableandlowcostpbsquantumdotsolarcellswithcragelectrodes