| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sajjad, Muhammad Tariq
London South Bank University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2024Improvements in dielectric, electrical and magnetic contributions in Ca0.5Co0.5CrxFe2-xO4 spinel ferrites by the substitution of Cr3+ ions
- 2021Development of Quantum Dot (QD) Based Color Converters for Multicolor Display.
- 2021Development of Quantum Dots (QD) based color converters for multicolor displaycitations
- 2020Direct Growth of Vertically Aligned Carbon Nanotubes onto Transparent Conductive Oxide Glass for Enhanced Charge Extraction in Perovskite Solar Cellscitations
- 2019Triptycene as a supramolecular additive in PTB7:PCBM blends and its influence on photovoltaic propertiescitations
- 2019CuSCN nanowires as electrodes for p-type quantum dot sensitized solar cells : charge transfer dynamics and alumina passivationcitations
- 2019Efficient indoor pin hybrid perovskite solar cells using low temperature solution processed NiO as hole extraction layerscitations
- 2019Interface limited hole extraction from methylammonium lead iodide filmscitations
- 2019Interface limited hole extraction from methylammonium lead iodide filmscitations
- 2019Highly efficient fullerene and non-fullerene based ternary organic solar cells incorporating a new tetrathiocin-cored semiconductorcitations
- 2018Triptycene as a supramolecular additive in PTB7:PCBM blends and its influence on photovoltaic propertiescitations
- 2018Triptycene as a Supramolecular Additive in PTB7: PCBM blends and its Influence on Photovoltaic Propertiescitations
- 2018Improved efficiency of PbS quantum dot sensitized NiO photocathodes with naphthalene diimide electron acceptor bound to the surface of the nanocrystalscitations
- 2018CuSCN nanowires as electrodes for p-type quantum dot sensitized solar cells:charge transfer dynamics and alumina passivationcitations
- 2017Narrow-band anisotropic electronic structure of ReS2citations
- 2017Tuning crystalline ordering by annealing and additives to study its effect on exciton diffusion in a polyalkylthiophene copolymercitations
- 2015Controlling exciton diffusion and fullerene distribution in photovoltaic blends by side chain modificationcitations
- 2015In situ formation and photo patterning of emissive quantum dots in organic small moleculescitations
Places of action
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article
Triptycene as a Supramolecular Additive in PTB7: PCBM blends and its Influence on Photovoltaic Properties
Abstract
Additives play an important role in modifying the morphology and phase separation of donor and acceptor molecules in bulk heterojunction (BHJ) solar cells. Here, we report triptycene (TPC) as a small-molecule additive for supramolecular control of phase separation and concomitant improvement of the power conversion efficiency (PCE) of PTB7 donor and fullerene acceptor-based BHJ polymer solar cells. An overall 60% improvement in PCE is observed for both PTB7:PC61BM and PTB7:PC71BM blends. The improved photovoltaic (PV) performance can be attributed to three factors: (a) TPC-induced supramolecular interactions with donor:acceptor components in the blends to realize a nanoscale phase-separated morphology; (b) an increase in the charge transfer state energy that lowers the driving force for electron transfer from donor to acceptor molecules; and (c) an increase in the charge carrier mobility. An improvement in efficiency using TPC as a supramolecular additive has also been demonstrated for other BHJ blends such as PBDB-T:PC71BM and P3HT:PCBM, implying the wide applicability of this new additive molecule. A comparison of the photostability of TPC as an additive for PTB7:PCBM solar cells to that of the widely used 1,8-diiodooctane additive shows ∼30% higher retention of PV performance for the TPC-added solar cells after 34 h of AM 1.5G illumination. The results obtained suggest that the approach of using additives that can promote supramolecular interactions to modify the length scale of phase separation between donor and acceptor is very promising and can lead to the development of highly efficient and stable organic photovoltaics.