Supersonically Spray-Coated Colloidal Quantum Dot Ink Solar Cells

Abstract Controlling the thickness of quantum dot (QD) films is difficult using existing film formation techniques, which employ pre-ligand-exchanged PbS QD inks, because of several issues: 1) poor colloidal stability, 2) use of high-boiling-point solvents for QD dispersion, and 3) limitations assoc...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Hyekyoung Choi, Jong-Gun Lee, Xuan Dung Mai, Matthew C. Beard, Sam S. Yoon, Sohee Jeong
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1caf8bb959024fd09b023061299d659c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:1caf8bb959024fd09b023061299d659c
record_format	dspace
spelling	oai:doaj.org-article:1caf8bb959024fd09b023061299d659c2021-12-02T12:31:46ZSupersonically Spray-Coated Colloidal Quantum Dot Ink Solar Cells10.1038/s41598-017-00669-92045-2322https://doaj.org/article/1caf8bb959024fd09b023061299d659c2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00669-9https://doaj.org/toc/2045-2322Abstract Controlling the thickness of quantum dot (QD) films is difficult using existing film formation techniques, which employ pre-ligand-exchanged PbS QD inks, because of several issues: 1) poor colloidal stability, 2) use of high-boiling-point solvents for QD dispersion, and 3) limitations associated with one-step deposition. Herein, we suggest a new protocol for QD film deposition using electrical double-layered PbS QD inks, prepared by solution-phase ligand exchange using methyl ammonium lead iodide (MAPbI3). The films are deposited by the supersonic spraying technique, which facilitates the rapid evaporation of the solvent and the subsequent deposition of the PbS QD ink without requiring a post-deposition annealing treatment for solvent removal. The film thickness could be readily controlled by varying the number of spraying sweeps made across the substrate. This spray deposition process yields high-quality n-type QD films quickly (within 1 min) while minimizing the amount of the PbS QD ink used to less than 5 mg for one device (300-nm-thick absorbing layer, 2.5 × 2.5 cm2). Further, the formation of an additional p-layer by treatment with mercaptopropionic acid allows for facile hole extraction from the QD films, resulting in a power conversion efficiency of 3.7% under 1.5 AM illumination.Hyekyoung ChoiJong-Gun LeeXuan Dung MaiMatthew C. BeardSam S. YoonSohee JeongNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hyekyoung Choi Jong-Gun Lee Xuan Dung Mai Matthew C. Beard Sam S. Yoon Sohee Jeong Supersonically Spray-Coated Colloidal Quantum Dot Ink Solar Cells
description	Abstract Controlling the thickness of quantum dot (QD) films is difficult using existing film formation techniques, which employ pre-ligand-exchanged PbS QD inks, because of several issues: 1) poor colloidal stability, 2) use of high-boiling-point solvents for QD dispersion, and 3) limitations associated with one-step deposition. Herein, we suggest a new protocol for QD film deposition using electrical double-layered PbS QD inks, prepared by solution-phase ligand exchange using methyl ammonium lead iodide (MAPbI3). The films are deposited by the supersonic spraying technique, which facilitates the rapid evaporation of the solvent and the subsequent deposition of the PbS QD ink without requiring a post-deposition annealing treatment for solvent removal. The film thickness could be readily controlled by varying the number of spraying sweeps made across the substrate. This spray deposition process yields high-quality n-type QD films quickly (within 1 min) while minimizing the amount of the PbS QD ink used to less than 5 mg for one device (300-nm-thick absorbing layer, 2.5 × 2.5 cm2). Further, the formation of an additional p-layer by treatment with mercaptopropionic acid allows for facile hole extraction from the QD films, resulting in a power conversion efficiency of 3.7% under 1.5 AM illumination.
format	article
author	Hyekyoung Choi Jong-Gun Lee Xuan Dung Mai Matthew C. Beard Sam S. Yoon Sohee Jeong
author_facet	Hyekyoung Choi Jong-Gun Lee Xuan Dung Mai Matthew C. Beard Sam S. Yoon Sohee Jeong
author_sort	Hyekyoung Choi
title	Supersonically Spray-Coated Colloidal Quantum Dot Ink Solar Cells
title_short	Supersonically Spray-Coated Colloidal Quantum Dot Ink Solar Cells
title_full	Supersonically Spray-Coated Colloidal Quantum Dot Ink Solar Cells
title_fullStr	Supersonically Spray-Coated Colloidal Quantum Dot Ink Solar Cells
title_full_unstemmed	Supersonically Spray-Coated Colloidal Quantum Dot Ink Solar Cells
title_sort	supersonically spray-coated colloidal quantum dot ink solar cells
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/1caf8bb959024fd09b023061299d659c
work_keys_str_mv	AT hyekyoungchoi supersonicallyspraycoatedcolloidalquantumdotinksolarcells AT jonggunlee supersonicallyspraycoatedcolloidalquantumdotinksolarcells AT xuandungmai supersonicallyspraycoatedcolloidalquantumdotinksolarcells AT matthewcbeard supersonicallyspraycoatedcolloidalquantumdotinksolarcells AT samsyoon supersonicallyspraycoatedcolloidalquantumdotinksolarcells AT soheejeong supersonicallyspraycoatedcolloidalquantumdotinksolarcells
_version_	1718394262139174912

Supersonically Spray-Coated Colloidal Quantum Dot Ink Solar Cells

Ejemplares similares