A5001038824- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Perovskite Materials and Applications
- Luminescence and Fluorescent Materials
- Silicon Nanostructures and Photoluminescence
- Nanowire Synthesis and Applications
- Luminescence Properties of Advanced Materials
- Nonlinear Optical Materials Studies
- Transition Metal Oxide Nanomaterials
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Battery Materials and Technologies
- Nanomaterials for catalytic reactions
- Molecular Junctions and Nanostructures
- Near-Field Optical Microscopy
- Advanced Cellulose Research Studies
- Advanced Photocatalysis Techniques
- Conducting polymers and applications
- Advanced Semiconductor Detectors and Materials
- Nanocluster Synthesis and Applications
- Advancements in Battery Materials
- Catalysis for Biomass Conversion
Macquarie University
2024
UNSW Sydney
2018-2022
ARC Centre of Excellence in Advanced Molecular Imaging
2018-2019
The University of Sydney
2018
Solar cells fabricated using modified AgBiS<sub>2</sub> nanocrystals achieved a PCE of 4.3%, which is 30% improvement compared with conventional nanocrystal solar cells.
PbS quantum dot solar cells (QDSCs) have emerged as a promising low-cost, solution-processable energy harvesting device and demonstrated good air stability potential for large-scale commercial implementation. QDSCs achieved record certified efficiency of 12% in 2018 by utilizing an n+–n–p structure. However, the p-type layer has generally suffered from low carrier mobility due to organic ligand 1,2-ethanedithiol (EDT) that is used modify (QD) surface. The EDT naturally limits thickness...
Colloidal quantum dot solids are attractive candidates for tandem solar cells because of their widely tunable bandgaps. However, the development cell has lagged far behind that its single-junction counterpart. One fundamental problems with colloidal is relatively small diffusion length, which limits absorbing layer thickness and hence power conversion efficiency. In this research, guided by optical modeling utilizing a graded band alignment strategy, two-terminal monolithic...
The antimony-doped tin oxide buffer layer greatly improve the extraction of carriers in a PbSe QD solar cell.
We design an optically resonant bulk heterojunction solar cell to study optoelectronic properties of nanostructured p-n junctions. The nanostructures yield strong light-matter interaction as well distinct charge-carrier extraction behavior, which together improve the overall power conversion efficiency. demonstrate high-resolution substrate conformal soft-imprint lithography technology in combination with state-of-the art ZnO nanoparticles create a nanohole template electron transport layer....
The unique tunable bandgaps and straightforward synthesis of colloidal quantum dots make them promising low-cost materials for photovoltaics. High-performance dot solar cells rely on good-quality electron transporting layers (ETLs) to carrier selective contacts. Despite extensive use n-type oxides as ETLs, a detailed understanding their surface interface states well mechanisms improve optical properties are still under development. Here, we report simple procedure produce MgCl2 passivated...
Breakdown and utilization of cellulose are critical for the bioenergy sector; however, current cellulose-to-energy conversion schemes often consume large quantities unrecoverable chemicals, or expensive, due to need enzymes high temperatures. In this paper, we demonstrate a new method converting into soluble compounds using mixture Fe2+ Fe3+ as catalytic centers breakdown, yielding Fe3O4 nanoparticles during hydrothermal process. Iron precursors transformed more than 61% microcrystalline...
Here we demonstrate an upconversion composition using semiconductor nanocrystal sensitizers that employs molecular triplet states below the singlet oxygen energy. We show that, contrary to usual expectation, admission of enhances intensity upconverted light and significantly speeds up photochemical processes involved. Further, from silicon band gap in presence oxygen.
Quantum dots (QDs) have a wide range of applications in the field optoelectronics. They been playing multiple roles within configuration device, by serving as building blocks for both active layer and carrier transport layer. While performance various optoelectronic devices has steadily improving via developments passivating QD layer, possible improvement passivation QD-based largely overlooked. Here, with lead sulfide photovoltaics platform study, we demonstrate that device can be...
Quasi-2D layered halide perovskites (quasi-2DLPs) have emerged as promising materials for photovoltaic (PV) applications owing to their advantageous bandgap absorbing visible light and the improved stability they enable. Their charge transport mechanism is heavily influenced by grain orientation of crystals well nanostructures, such boundaries (GBs) edge states─the formation which inevitable in polycrystalline quasi-2DLP thin films. Despite importance, impact these features on remains...
Colloidal quantum dots (CQDs) are promising candidates for low-cost and high efficiency light harvesting materials owing to their solution processability bandgap tunability. The most efficient lead chalcogenide QD solar cell reported date is based on PbS, with a power conversion of 11.3%. However, in typical cell, the hole transport layer has much lower mobility than that ilayer, which hinders extraction. In this work, we use Ag doped PbS QDs form p-type increase its conductivity...
<div>Here we demonstrate an upconversion composition using semiconductor nanocrystal sensitizers that employs molecular triplet states below the singlet oxygen energy. We show that, contrary to usual expectation, admission of enhances intensity upconverted light and significantly speeds up photochemical processes involved. Further, from silicon band gap in presence oxygen.</div>
One of the most interesting - but often underappreciated absorber materials for solar cells are PbS quantum dot (QD) layers. In principle, tuneable bandgap, that derives from confinement, together with strong absorption, which allows thin and flexible layers, as well ease fabrication in form solution deposition, each arguments thin-film-QD layer based cells. However, so far, those advantages have been met notable disadvantages hindered a faster more enthusiastic uptake QD layers scientific...
PbS/CdS core-shell quantum dots (QD) with diameters of <4 nm have previously only been demonstrated the formation a monolayer pure phase CdS shell through cation exchange. The lattice mismatch between zincblende and rocksalt PbS core limits optimal thickness to 1 prevent defect at coreshell interface in order maximize photoluminescence yield (PLQY) lifetime. This work demonstrates for first time Cd-rich Pb <inf xmlns:mml="http://www.w3.org/1998/Math/MathML"...