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Electro-active nanofibers of a tetrathiafulvalene derivative with amide hydrogen bonds as a dopant-free hole transport material for perovskite solar cells
- Source :
- Solar Energy. 194:248-253
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- A tetrathiafulvalene derivative containing two amide units for intermolecular hydrogen bonds (Bis-amide-TTF) was found to form supramolecular assemblies, in which intermolecular TTF cores were stacked with each other. The electrical conductivity of Bis-amide-TTF-based film was 1.28 × 10 - 5 S c m - 1 , which was greater than that of spiro-OMeTAD doped with t-butylpyridine and bis(trifluoromethane)sulfonimide lithium salt ( 8.37 × 10 - 6 S c m - 1 ). Bis-amide-TTF was applied as a hole transport material (HTM) for perovskite solar cells (PSCs). The Bis-amide-TTF film has a deeper HOMO level than that of spiro-OMeTAD, leading to an increased open-circuit voltage of the PSCs. The power conversion efficiency of 14.5% with a short-circuit current density (Jsc) of 19.8 mA cm−2, an open-circuit voltage (Voc) of 1.11 V, and a fill factor (FF) of 66% was achieved for PSCs fabricated with the dopant-free Bis-amide-TTF-based HTM, which was comparable to that obtained with spiro-OMeTAD with the dopants (15.5%).
- Subjects :
- Materials science
Dopant
Renewable Energy, Sustainability and the Environment
Hydrogen bond
020209 energy
Doping
Energy conversion efficiency
chemistry.chemical_element
02 engineering and technology
021001 nanoscience & nanotechnology
chemistry.chemical_compound
chemistry
Electrical resistivity and conductivity
0202 electrical engineering, electronic engineering, information engineering
Physical chemistry
General Materials Science
Lithium
0210 nano-technology
Tetrathiafulvalene
Perovskite (structure)
Subjects
Details
- ISSN :
- 0038092X
- Volume :
- 194
- Database :
- OpenAIRE
- Journal :
- Solar Energy
- Accession number :
- edsair.doi...........a00fad3339eb707decc551f6697f8198