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Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells / Trystan, Watson

Physical Chemistry Chemical Physics, Volume: 20, Issue: 2, Pages: 1252 - 1260

Swansea University Author: Trystan, Watson

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DOI (Published version): 10.1039/C7CP07682G

Abstract

A new series of diacetylide-triphenylamine (DATPA) derivatives with five different alkyl chains in the para position, MeO, EtO, nPrO, iPrO and BuO, were synthesised, fully characterised and their function as hole-transport materials in perovskite solar cells (PSC) studied. Their thermal, optical and...

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Published in: Physical Chemistry Chemical Physics
ISSN: 1463-9076 1463-9084
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa37968
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Their thermal, optical and electrochemical properties were investigated along with their molecular packing and charge transport properties to analyse the influence of different alkyl chains in the solar cell parameters. The shorter alkyl chain facilitates more compact packing structures which enhanced the hole mobilities and reduced recombination. This work suggests that the molecule with the methoxy substituent (MeO) exhibits the best semiconductive properties with a power conversion efficiency of up to 5.63%, an open circuit voltage (Voc) of 0.83 V, a photocurrent density (Jsc) of 10.84 mA cm&#x2212;2 and a fill factor of 62.3% in perovskite solar cells. Upon replacing the methoxy group with longer alkyl chain substituents without changing the energy levels, there is a decrease in the charge mobility as well as PCE (e.g. 3.29% for BuO-DATPA). 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CCDC 1574478&#x2013;1574480 and 1574719. 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spelling 2018-03-05T14:47:02.9985804 v2 37968 2018-01-09 Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells a210327b52472cfe8df9b8108d661457 0000-0002-8015-1436 Trystan Watson Trystan Watson true false 2018-01-09 EEN A new series of diacetylide-triphenylamine (DATPA) derivatives with five different alkyl chains in the para position, MeO, EtO, nPrO, iPrO and BuO, were synthesised, fully characterised and their function as hole-transport materials in perovskite solar cells (PSC) studied. Their thermal, optical and electrochemical properties were investigated along with their molecular packing and charge transport properties to analyse the influence of different alkyl chains in the solar cell parameters. The shorter alkyl chain facilitates more compact packing structures which enhanced the hole mobilities and reduced recombination. This work suggests that the molecule with the methoxy substituent (MeO) exhibits the best semiconductive properties with a power conversion efficiency of up to 5.63%, an open circuit voltage (Voc) of 0.83 V, a photocurrent density (Jsc) of 10.84 mA cm−2 and a fill factor of 62.3% in perovskite solar cells. Upon replacing the methoxy group with longer alkyl chain substituents without changing the energy levels, there is a decrease in the charge mobility as well as PCE (e.g. 3.29% for BuO-DATPA). The alkyl chain length of semiconductive molecules plays an important role in achieving high performance perovskite solar cells. Journal Article Physical Chemistry Chemical Physics 20 2 1252 1260 1463-9076 1463-9084 31 12 2018 2018-12-31 10.1039/C7CP07682G Electronic supplementary information (ESI) available: Experimental details of the synthesis of the DATPA derivatives, additional electrochemical measurments, DSC curves, X-ray structures, extended crystallographic table, powder diffraction data, calculated HOMO and LUMO energy levels of all DATPA derivatives, transfer characteristic curves for the mobility calculations, transient absorption spectroscopy curves and additional solar cell parameters. 1 H and 13C for all the synthesised compounds. CCDC 1574478–1574480 and 1574719. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7cp07682g COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2018-03-05T14:47:02.9985804 2018-01-09T09:28:28.9059602 College of Engineering Engineering Rosinda Fuentes Pineda 1 Joel Troughton 2 Miquel Planells 3 Irene Sanchez-Molina Santos 4 Farmin Muhith 5 Gary S. Nichol 6 Saif Haque 7 Trystan Watson 0000-0002-8015-1436 8 Neil Robertson 9 0037968-09012018093105.pdf fuentespineda2018.pdf 2018-01-09T09:31:05.0800000 Output 2199692 application/pdf Version of Record true 2018-01-09T00:00:00.0000000 true eng 0037968-09012018093407.pdf fuentespineda2018suppinfo.pdf 2018-01-09T09:34:07.8700000 Output 5491182 application/pdf Version of Record true 2018-01-09T00:00:00.0000000 true eng
title Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells
spellingShingle Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells
Trystan, Watson
title_short Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells
title_full Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells
title_fullStr Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells
title_full_unstemmed Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells
title_sort Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells
author_id_str_mv a210327b52472cfe8df9b8108d661457
author_id_fullname_str_mv a210327b52472cfe8df9b8108d661457_***_Trystan, Watson
author Trystan, Watson
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description A new series of diacetylide-triphenylamine (DATPA) derivatives with five different alkyl chains in the para position, MeO, EtO, nPrO, iPrO and BuO, were synthesised, fully characterised and their function as hole-transport materials in perovskite solar cells (PSC) studied. Their thermal, optical and electrochemical properties were investigated along with their molecular packing and charge transport properties to analyse the influence of different alkyl chains in the solar cell parameters. The shorter alkyl chain facilitates more compact packing structures which enhanced the hole mobilities and reduced recombination. This work suggests that the molecule with the methoxy substituent (MeO) exhibits the best semiconductive properties with a power conversion efficiency of up to 5.63%, an open circuit voltage (Voc) of 0.83 V, a photocurrent density (Jsc) of 10.84 mA cm−2 and a fill factor of 62.3% in perovskite solar cells. Upon replacing the methoxy group with longer alkyl chain substituents without changing the energy levels, there is a decrease in the charge mobility as well as PCE (e.g. 3.29% for BuO-DATPA). The alkyl chain length of semiconductive molecules plays an important role in achieving high performance perovskite solar cells.
published_date 2018-12-31T19:50:53Z
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