A5017047340- Organic Light-Emitting Diodes Research
- Semiconductor materials and devices
- Perovskite Materials and Applications
- Quantum and electron transport phenomena
- solar cell performance optimization
- Semiconductor Quantum Structures and Devices
- Advanced Memory and Neural Computing
- Quantum Dots Synthesis And Properties
- Nanowire Synthesis and Applications
- Organic Electronics and Photovoltaics
- Silicon and Solar Cell Technologies
- Neural Networks and Reservoir Computing
UNSW Sydney
2020-2024
University of Dundee
2013
Singlet fission is a form of multiple exciton generation, which occurs in organic chromophores when high-energy singlet separates into two lower energy triplet excitons, each with approximately half the energy. Since this process spin-allowed, it can proceed on an ultrafast timescale less than several picoseconds, outcompeting most other loss mechanisms and reaching quantitative yields approaching 200%. Due to high quantum efficiency, shows promise as means reducing thermalization losses...
Abstract The rapid development of mixed‐halide perovskites has established a versatile optoelectronic platform owing to their extraordinary physical properties, but there remain challenges toward achieving highly reliable synthesis and performance, in addition, post‐synthesis approaches for tuning photoluminescence properties after device fabrication limited. In this work, an effective approach is reported leveraging hot electrons generated from plasmonic nanostructures regulate the optical...
Abstract The economic value of a photovoltaic installation depends upon both its lifespan and power conversion efficiency. Progress toward the latter includes mechanisms to circumvent Shockley‐Queisser limit, such as tandem designs multiple exciton generation (MEG). Here we explain how silicon MEG‐enhanced cell architectures result in lower operating temperatures, increasing device lifetime compared standard c‐Si cells. Also demonstrated are further advantages from MEG enhanced cells: (i)...
Silicon solar cells are approaching their efficiency limit of 29% under the standard spectrum. In order to surpass this limit, a device is required that better manages energy in each incoming packet (photon). One approach end split higher photons two, such two electron-hole pairs can be generated by one photon. This strategy has an upper 45.9%. Organic Multiple Exciton Generation (OMEG) executed photophysical process called singlet fission. A spin-0 (singlet) exciton photon, and it decays...
Devices that exploit the quantum properties of materials are widespread, with information processors and sensors showing significant progress. Organic offer interesting opportunities for technologies owing to their engineerable spin properties, spintronic operation resonance magnetic-field sensing demonstrated in research grade devices, as well proven compatibility large-scale fabrication techniques. Yet several important challenges remain moving toward scaling these proof-of-principle...
The economic value of a photovoltaic installation depends upon both its lifetime and power conversion efficiency. Progress towards the latter includes mechanisms to circumvent Shockley- Queisser limit, such as tandem designs multiple exciton generation (MEG). Here we explain how silicon MEG enhanced cell architectures result in lower operating temperatures, increasing device compared standard c-Si cells. Also demonstrated are further advantages from cells: (i) architecture can completely...
Singlet fission is a form of multiple exciton generation which occurs in organic chromophores when high energy singlet separates into two lower triplet excitons, each with approximately half the energy. Since this process spin-allowed it can proceed on an ultrafast timescale less than several picoseconds, outcompeting most other loss mechanisms and reaching quantitative yields approaching 200%. Due to quantum efficiency, shows promise as means reducing thermalisation losses photovoltaic...
Spin is a quantum property fundamental to the charge-light conversion process in optoelectronic devices. Organic materials offer unique opportunities exploit spin due their long coherence and lifetimes. The hyperfine interaction, which dominates spin-dependent recombination processes of these materials, can be chemically tuned on molecular level while retaining large-scale fabrication techniques those materials. To date, this has been treated monolithically, characterized by single value...
Devices which exploit the quantum properties of materials are widespread, with information processors and sensors showing significant progress. Organic devices offer interesting opportunities for technologies owing to their engineerable spin properties, spintronic operation resonance magnetic-field sensing demonstrated in research grade devices, as well proven compatibility large scale fabrication techniques. Yet several important challenges remain we move toward scaling these...