Staff View: Solution processed PVB/mica flake coatings for the encapsulation of organic solar cells

Solution processed PVB/mica flake coatings for the encapsulation of organic solar cells

Organic photovoltaics (OPVs) die due to their interactions with environmental gases, i.e., moisture and oxygen, the latter being the most dangerous, especially under illumination, due to the fact that most of the active layers used in OPVs are extremely sensitive to oxygen. In this work we demonstra...

Full description

Saved in:

Bibliographic Details
Main Authors:	Channa, Iftikhar Ahmed, Chandio, Ali Dad, Rizwan, Muhammad, Shah, Aqeel Ahmed, Bhatti, Jahanzeb, Shah, Abdul Karim, Hussain, Fayaz, Shar, Muhammad Ali, AlHazaa, Abdulaziz
Format:	Article
Published:	MDPI 2021
Subjects:	QC Physics QD Chemistry TJ Mechanical engineering and machinery
Online Access:	http://eprints.um.edu.my/34164/
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my.um.eprints.34164
record_format	eprints
spelling	my.um.eprints.341642022-09-01T07:13:10Z http://eprints.um.edu.my/34164/ Solution processed PVB/mica flake coatings for the encapsulation of organic solar cells Channa, Iftikhar Ahmed Chandio, Ali Dad Rizwan, Muhammad Shah, Aqeel Ahmed Bhatti, Jahanzeb Shah, Abdul Karim Hussain, Fayaz Shar, Muhammad Ali AlHazaa, Abdulaziz QC Physics QD Chemistry TJ Mechanical engineering and machinery Organic photovoltaics (OPVs) die due to their interactions with environmental gases, i.e., moisture and oxygen, the latter being the most dangerous, especially under illumination, due to the fact that most of the active layers used in OPVs are extremely sensitive to oxygen. In this work we demonstrate solution-based effective barrier coatings based on composite of poly(vinyl butyral) (PVB) and mica flakes for the protection of poly (3-hexylthiophene) (P3HT)-based organic solar cells (OSCs) against photobleaching under illumination conditions. In the first step we developed a protective layer with cost effective and environmentally friendly methods and optimized its properties in terms of transparency, barrier improvement factor, and bendability. The developed protective layer maintained a high transparency in the visible region and improved oxygen and moisture barrier quality by the factor of similar to 7. The resultant protective layers showed ultra-flexibility, as no significant degradation in protective characteristics were observed after 10 K bending cycles. In the second step, a PVB/mica composite layer was applied on top of the P3HT film and subjected to photo-degradation. The P3HT films coated with PVB/mica composite showed improved stability under constant light irradiation and exhibited a loss of <20% of the initial optical density over the period of 150 h. Finally, optimized barrier layers were used as encapsulation for organic solar cell (OSC) devices. The lifetime results confirmed that the stability of the OSCs was extended from few hours to over 240 h in a sun test (65 degrees C, ambient RH%) which corresponds to an enhanced lifetime by a factor of 9 compared to devices encapsulated with pristine PVB. MDPI 2021-05 Article PeerReviewed Channa, Iftikhar Ahmed and Chandio, Ali Dad and Rizwan, Muhammad and Shah, Aqeel Ahmed and Bhatti, Jahanzeb and Shah, Abdul Karim and Hussain, Fayaz and Shar, Muhammad Ali and AlHazaa, Abdulaziz (2021) Solution processed PVB/mica flake coatings for the encapsulation of organic solar cells. Materials, 14 (10). ISSN 1996-1944, DOI https://doi.org/10.3390/ma14102496 <https://doi.org/10.3390/ma14102496>. 10.3390/ma14102496
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QC Physics QD Chemistry TJ Mechanical engineering and machinery
spellingShingle	QC Physics QD Chemistry TJ Mechanical engineering and machinery Channa, Iftikhar Ahmed Chandio, Ali Dad Rizwan, Muhammad Shah, Aqeel Ahmed Bhatti, Jahanzeb Shah, Abdul Karim Hussain, Fayaz Shar, Muhammad Ali AlHazaa, Abdulaziz Solution processed PVB/mica flake coatings for the encapsulation of organic solar cells
description	Organic photovoltaics (OPVs) die due to their interactions with environmental gases, i.e., moisture and oxygen, the latter being the most dangerous, especially under illumination, due to the fact that most of the active layers used in OPVs are extremely sensitive to oxygen. In this work we demonstrate solution-based effective barrier coatings based on composite of poly(vinyl butyral) (PVB) and mica flakes for the protection of poly (3-hexylthiophene) (P3HT)-based organic solar cells (OSCs) against photobleaching under illumination conditions. In the first step we developed a protective layer with cost effective and environmentally friendly methods and optimized its properties in terms of transparency, barrier improvement factor, and bendability. The developed protective layer maintained a high transparency in the visible region and improved oxygen and moisture barrier quality by the factor of similar to 7. The resultant protective layers showed ultra-flexibility, as no significant degradation in protective characteristics were observed after 10 K bending cycles. In the second step, a PVB/mica composite layer was applied on top of the P3HT film and subjected to photo-degradation. The P3HT films coated with PVB/mica composite showed improved stability under constant light irradiation and exhibited a loss of <20% of the initial optical density over the period of 150 h. Finally, optimized barrier layers were used as encapsulation for organic solar cell (OSC) devices. The lifetime results confirmed that the stability of the OSCs was extended from few hours to over 240 h in a sun test (65 degrees C, ambient RH%) which corresponds to an enhanced lifetime by a factor of 9 compared to devices encapsulated with pristine PVB.
format	Article
author	Channa, Iftikhar Ahmed Chandio, Ali Dad Rizwan, Muhammad Shah, Aqeel Ahmed Bhatti, Jahanzeb Shah, Abdul Karim Hussain, Fayaz Shar, Muhammad Ali AlHazaa, Abdulaziz
author_facet	Channa, Iftikhar Ahmed Chandio, Ali Dad Rizwan, Muhammad Shah, Aqeel Ahmed Bhatti, Jahanzeb Shah, Abdul Karim Hussain, Fayaz Shar, Muhammad Ali AlHazaa, Abdulaziz
author_sort	Channa, Iftikhar Ahmed
title	Solution processed PVB/mica flake coatings for the encapsulation of organic solar cells
title_short	Solution processed PVB/mica flake coatings for the encapsulation of organic solar cells
title_full	Solution processed PVB/mica flake coatings for the encapsulation of organic solar cells
title_fullStr	Solution processed PVB/mica flake coatings for the encapsulation of organic solar cells
title_full_unstemmed	Solution processed PVB/mica flake coatings for the encapsulation of organic solar cells
title_sort	solution processed pvb/mica flake coatings for the encapsulation of organic solar cells
publisher	MDPI
publishDate	2021
url	http://eprints.um.edu.my/34164/
_version_	1744649160757346304
score	13.211869

Solution processed PVB/mica flake coatings for the encapsulation of organic solar cells

Similar Items