Dopant-free π-conjugated polymers as hole-transporting materials for stable perovskite solar cells

© 2018 Springer Science+Business Media, LLC, part of Springer Nature Selections of hole transporting materials (HTMs) in perovskite solar cells (PCSs) with conventional structure are crucial for the macroscopic device performance and stability. In this work, four different types of π-conjugated poly...

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Main Authors: Pipat Ruankham, Takashi Sagawa
Format: Journal
Published: 2018
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85044017444&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/48470
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spelling th-cmuir.6653943832-484702018-04-25T10:12:48Z Dopant-free π-conjugated polymers as hole-transporting materials for stable perovskite solar cells Pipat Ruankham Takashi Sagawa © 2018 Springer Science+Business Media, LLC, part of Springer Nature Selections of hole transporting materials (HTMs) in perovskite solar cells (PCSs) with conventional structure are crucial for the macroscopic device performance and stability. In this work, four different types of π-conjugated polymers were used as HTMs and the effects of their properties on photovoltaic performance and stability were investigated. It was found that light absorption overlap of HTM with perovskite layer reduces charge generation, implying that HTM also absorbs photon but does not participate in charge generation activity. However, with determination of band alignment, the PSCs with high open circuit voltage (V oc ) was achieved with PTB7-TH which has the most appropriate highest occupied molecular orbital level for the valence band edge of the perovskite layer. Finally, in comparison with the as-prepared device, the non-encapsulated PSC with PTB7-TH also showed stable V oc and improved power conversation efficiency upon storing in ambient atmosphere with relative humidity of 55–70% for 112 h. 2018-04-25T10:12:48Z 2018-04-25T10:12:48Z 2018-03-16 Journal 1573482X 09574522 2-s2.0-85044017444 10.1007/s10854-018-8932-4 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85044017444&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/48470
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description © 2018 Springer Science+Business Media, LLC, part of Springer Nature Selections of hole transporting materials (HTMs) in perovskite solar cells (PCSs) with conventional structure are crucial for the macroscopic device performance and stability. In this work, four different types of π-conjugated polymers were used as HTMs and the effects of their properties on photovoltaic performance and stability were investigated. It was found that light absorption overlap of HTM with perovskite layer reduces charge generation, implying that HTM also absorbs photon but does not participate in charge generation activity. However, with determination of band alignment, the PSCs with high open circuit voltage (V oc ) was achieved with PTB7-TH which has the most appropriate highest occupied molecular orbital level for the valence band edge of the perovskite layer. Finally, in comparison with the as-prepared device, the non-encapsulated PSC with PTB7-TH also showed stable V oc and improved power conversation efficiency upon storing in ambient atmosphere with relative humidity of 55–70% for 112 h.
format Journal
author Pipat Ruankham
Takashi Sagawa
spellingShingle Pipat Ruankham
Takashi Sagawa
Dopant-free π-conjugated polymers as hole-transporting materials for stable perovskite solar cells
author_facet Pipat Ruankham
Takashi Sagawa
author_sort Pipat Ruankham
title Dopant-free π-conjugated polymers as hole-transporting materials for stable perovskite solar cells
title_short Dopant-free π-conjugated polymers as hole-transporting materials for stable perovskite solar cells
title_full Dopant-free π-conjugated polymers as hole-transporting materials for stable perovskite solar cells
title_fullStr Dopant-free π-conjugated polymers as hole-transporting materials for stable perovskite solar cells
title_full_unstemmed Dopant-free π-conjugated polymers as hole-transporting materials for stable perovskite solar cells
title_sort dopant-free π-conjugated polymers as hole-transporting materials for stable perovskite solar cells
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85044017444&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/48470
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