A5035670821- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Innovative Microfluidic and Catalytic Techniques Innovation
- Electrowetting and Microfluidic Technologies
- ZnO doping and properties
Swansea University
2016-2022
Google (United States)
2018
Roll-to-roll coating of all active layers is demonstrated for a P–I–N perovskite solar cell stack, using single step ink with an acetonitrile solvent system and flexible plastic substrate.
Abstract A method is reported for the controlled synthesis of device‐grade semiconducting polymers, utilizing a droplet‐based microfluidic reactor. Using poly(3‐hexylthiophene) (P3HT) as test material, reactor shown to provide and stable environment polymer synthesis, enabling control molecular weight via tuning flow conditions, reagent composition or temperature. Molecular weights up 92 000 Da are readily attainable, without leakage fouling. The avoids usual deterioration in materials...
The fabrication of perovskite solar cells in an N-I-P structure with compact titanium dioxide blocking, mesoporous scaffold, single-step and hole-transport layers deposited using the slot-die coating technique is reported. Devices on fluorine-doped tin oxide-coated glass substrates evaporated gold top contacts four slot-die-coated are demonstrated, best reach stabilized power conversion efficiencies 7%. This work demonstrates suitability for production within this cell stack potential to...
The demonstration of photovoltaic devices with high power conversion efficiencies using low cost perovskite materials hints at the possibility dramatically lowering solar energy. Key to further exploiting potential these is developing rapid processing techniques that can be used deliver lower throughput manufacture. This work details development viscosity drying formulations designed give quality films when slot-die coated on flexible roll-to-roll compatible substrates. A single step ink...
This work demonstrates a sequential deposition of lead iodide followed by methylammonium using the industrially compatible slot-die coating method that produces homogeneous pin-hole free films without use highly toxic dimethylformamide. is achieved through careful selection and formulation solvent system conditions for both layer coating. The choice found to be critical achieving good quality, conversion final perovskite film morphology formed. A range alcohols are assessed as formulations...
We use a coating model to enable homogenous deposition of SnO 2 for perovskite solar cells. Solvent engineering the formulation and adaptation parameters is used apply defect free layers using slot-die coating.
Spin coating, typically used to achieve nanometre thick films, is the established method for depositing perovskite precursors at lab scale use in solar cells. This study investigates dynamics of spin coating perovskite. By combining experimental measurement with a semi‐empirical model evaporation rate dimethylformamide solvent during mixed lead halide precursor determined be 1.2 × 10 –8 m/s. When K‐bar same does not significantly evaporate deposition process and when this film crystallised...
On page 2123 Martin Heeney, John C. de Mello, and co-workers describe a method for the controlled synthesis of device-grade semiconducting polymers using droplet-based microfluidic reactor. The use droplet reactor provides stable environment polymer avoids usual deterioration in materials quality that can occur when conventional batch syntheses are scaled from subgram level to higher quantities.