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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
- Source :
- Fuentes Pineda, R, Troughton, J, Planells, M, Sanchez Molina, I, Muhith, F, Nichol, G S, Haque, S A, Watson, T M & Robertson, N 2018, ' Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells ', Physical Chemistry Chemical Physics . https://doi.org/10.1039/C7CP07682G
- Publication Year :
- 2018
-
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 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.
- Subjects :
- Photocurrent
chemistry.chemical_classification
Materials science
Open-circuit voltage
Energy conversion efficiency
Substituent
General Physics and Astronomy
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Triphenylamine
01 natural sciences
0104 chemical sciences
law.invention
chemistry.chemical_compound
Crystallography
chemistry
law
Solar cell
Physical and Theoretical Chemistry
0210 nano-technology
Alkyl
Perovskite (structure)
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Fuentes Pineda, R, Troughton, J, Planells, M, Sanchez Molina, I, Muhith, F, Nichol, G S, Haque, S A, Watson, T M & Robertson, N 2018, ' Effect of alkyl chain length on the properties of triphenylamine-based hole transport materials and their performance in perovskite solar cells ', Physical Chemistry Chemical Physics . https://doi.org/10.1039/C7CP07682G
- Accession number :
- edsair.doi.dedup.....ca4819bf0a7fdc5e6d6cb3b506a6d02e