A5045388271- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Thin-Film Transistor Technologies
- Organic Light-Emitting Diodes Research
- High voltage insulation and dielectric phenomena
- Perovskite Materials and Applications
- Power Transformer Diagnostics and Insulation
- Dielectric materials and actuators
- Silicon and Solar Cell Technologies
- solar cell performance optimization
- Diamond and Carbon-based Materials Research
- Carbon Nanotubes in Composites
- Nanowire Synthesis and Applications
- Lightning and Electromagnetic Phenomena
- Transition Metal Oxide Nanomaterials
- Fullerene Chemistry and Applications
- Medical Imaging Techniques and Applications
- Thermal Analysis in Power Transmission
- Polymer Nanocomposites and Properties
- Semiconductor materials and interfaces
- Molecular Junctions and Nanostructures
University of Newcastle Australia
2022-2024
Flinders University
2018-2023
University of South Australia
2017
Chalmers University of Technology
2014
Fullerenes are shown to be efficient voltage-stabilizers for polyethylene, i.e., additives that increase the dielectric strength of insulation material. Such compounds highly sought-after because their use in power-cable may considerably enhance transmission efficiency tomorrow's power grids. On a molal basis, fullerenes most voltage stabilizers reported date.
ABSTRACT The synthesis and physico‐chemical properties of seven benzil‐type voltage stabilizers are reported. benzil core is substituted with alkyl chains different length that linked to the via an ester, ether, or tertiary amine group. All additives can be melt‐processed low‐density polyethylene (LDPE). Fourier‐transform infrared spectroscopy confirms compounds not affected by LDPE cross‐linking reaction induced dicumyl peroxide. Moreover, a combination gel content measurements, thermal...
The glass transition temperature (Tg) of polymers is an important parameter that determines the kinetics molecular organization polymeric chains. Understanding Tg conjugated critical in achieving a thermally stable and optimum morphology polymer:polymer or polymer:small molecule blends organic electronics. In this study, we have used woven glass-mesh-based method dynamic mechanical thermal analysis (DMTA) to evaluate polymer semiconductors, which generally not easy detect using conventional...
Within recent years, there has been an increased interest towards organic photovoltaics (OPVs), especially with their significant device performance reaching beyond 19% since 2022. With these advances in the of laboratory-scaled OPVs, also more attention directed using printing and coating methods that are compatible large-scale fabrication. Though large-area (>100 cm2) OPVs have reached efficiency 15%, this is still behind laboratory-scale OPVs. There needs to be focus on determining...
The development of non-fullerene acceptors (NFAs) such as ITIC and Y6 has greatly improved the efficiency polymer solar cells. Therefore, focus should now shift towards design donor polymers with better compatibility these NFAs to attempt push efficiencies higher levels. indacenodithienothiophene (IDT) unit up till been typically incorporated into for fullerene-based cells; however, application IDT-based in NFA cells is rare. In order increase number candidates, we have synthesized two new...
In this study, an alcohol soluble novel naphthalene diimide (NDI)–thiophene-based cathode interface layer (CIL), PNDIT10N, is reported. PNDIT10N was synthesized in a facile three-step method, processed from environmentally friendly benzyl (BnOH) and employed inverted polymer solar cells (PSCs). The three donors TQ1, PTNT, PTB7-Th were paired with the fullerene acceptor PC71BM for bulk heterojunction (BHJ) layers to evaluate CIL. modification of indium tin oxide (ITO) electrode ∼3 nm thin...
While the efficiency of organic solar cells (OSCs) has increased considerably in recent years, there remains a significant gap between experimental open‐circuit voltage ( V OC ) and theoretical limit. Understanding origin this energy loss is important for future development OSCs, with temperature‐dependent measurement an approach to help unlock underlying physics. Interestingly, previous studies have observed reduction at low temperature that been attributed by different phenomena. To...
Synthesizing copolymer acceptors based on a mix of three co-monomers is facile and effective strategy to control the aggregation crystallinity semiconducting polymers which has been exploited improve photovoltaic performance all-polymer solar cells (all-PSCs). Applying this well-studied electron-transporting polymer acceptor PNDI2OD-T2, different amounts 3-octylthiophene (OT) are used partially replace bithiophene (T2) unit, resulting in PNDI-OTx where x = 5, 10, or 15%. Another polymer,...
ABSTRACT An easily accessible anthraquinone‐benzodithiophene‐based high bandgap polymer (PTAq) was synthesized by Stille coupling reactions in remarkably yield (96.5%). The highest occupied molecular orbital energy level of the estimated from onset oxidation a cyclic voltammetry study to be −5.7 eV. PTAq showed an orange‐to‐green color switching with application 1.0‐V external potential film, which visible naked eye. optical behavior change also monitored using ultraviolet–visible absorption...
Abstract In this work, a new potential electron transport material, poly[( N,N' ‐bis(3‐( N,N‐ dimethyl)‐ N ‐ethylammonium)propyl)naphthalene‐1,4,5,8‐bis(dicarboximide)‐2,6‐diyl)‐alt‐2,5‐thiophene)]dibromide P(NDI3N‐T‐Br), is studied in conjunction with active layers formed by poly[2,3‐bis(3‐octyloxyphenyl)quinoxaline‐5,8‐diyl‐alt‐thiophene‐2,5‐diyl] (TQ1) and poly[[ , ′‐bis(2‐octyldodecyl)‐naphthalene‐1,4,5,8‐bis(dicarboximide)‐2,6‐diyl]‐alt‐5,5′‐(2,2′‐bithiophene)] (N2200). The energy...
This report describes research validating time-resolved microwave conductivity as a screening tool to discover new, efficient all-polymer solar cell systems.
We present a "one-step" approach to modify ZnO electron transport layers (ETLs) used in organic solar cells. This involves adding benzoic acid (BZA) derivatives directly the precursor solution, which are then at surface of resulting film. demonstrate this for three different BZA derivatives, namely acid, chlorobenzoic and 4-hydrazinobenzoic acid. For all molecules, improved device performance stability is demonstrated cells using an active layer blend PTQ10 (donor) ITIC-Br (non-fullerene...
ZnO is a common electron transport layer in organic solar cells that typically requires treatment with an additional to passivate surface traps optimize the device performance. Here, we present "one-step" approach modifying layers (ETLs) used cells. This involves adding benzoic acid (BZA) derivatives directly precursor solution, which are then at of resulting film. We demonstrate this for three different BZA derivatives, namely, acid, 4-chlorobenzoic and 4-hydrazinobenzoic acid. For all...
The stability of several all-polymer solar cell systems has been assessed and compared to that representative polymer/fullerene polymer/small molecule non-fullerene acceptor systems. All-polymer are found exhibit superior thermal with some able retain > 95% their starting efficiency after 500 heating cycles (cycling between room temperature 85 °C). In contrast, the studied dropped 70% a few cycles. Two also shown high under elevated temperature, showing no drop in performance when annealed...