A5075854956- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Organic Electronics and Photovoltaics
- Solid-state spectroscopy and crystallography
- Semiconductor materials and interfaces
- solar cell performance optimization
- Organic Light-Emitting Diodes Research
- Advancements in Solid Oxide Fuel Cells
Australian National University
2017-2019
Canberra (United Kingdom)
2017-2019
Reducing interface recombination boosts the <italic>V</italic><sub>oc</sub> for perovskite solar cells.
A perovskite/CIGS tandem configuration is an attractive and viable approach to achieve ultra-high efficiency cost-effective all-thin-film solar cell.
An innovative design for a monolithic perovskite/silicon tandem solar cell, featuring mesoscopic perovskite top subcell and high-temperature tolerant homojunction c-Si bottom subcell.
Abstract Defect‐mediated carrier recombination at the interfaces between perovskite and neighboring charge transport layers limits efficiency of most state‐of‐the‐art solar cells. Passivation interfacial defects is thus essential for attaining cell efficiencies close to theoretical limit. In this work, a novel double‐sided passivation 3D films demonstrated with thin surface bulky organic cation–based halide compound forming 2D layered perovskite. Highly efficient (22.77%) mixed‐dimensional...
Increasing the power conversion efficiency of silicon (Si) photovoltaics is a key enabler for continued reductions in cost solar electricity. Here, we describe two-terminal perovskite/Si tandem design that increases Si cell's output simplest possible manner: by placing perovskite cell directly on top bottom cell. The advantageous omission conventional interlayer eliminates both optical losses and processing steps enabled low contact resistivity attainable between n-type TiO2 Si, established...
Perovskite material with a bandgap of 1.7–1.8 eV is highly desirable for the top cell in tandem configuration lower bottom cell, such as silicon cell. This can be achieved by alloying iodide and bromide anions, but light-induced phase-segregation phenomena are often observed perovskite films this kind, implications solar efficiency. Here, we investigate phase segregation inside quadruple-cation complete structure find that magnitude phenomenon dependent on operating condition Under...
Abstract The open‐circuit voltage ( V OC ) and fill factor are key performance parameters of solar cells, understanding the underlying mechanisms that limit these in real devices is critical to their optimization. Device modeling combined with luminescence cell current–voltage I – measurements show carrier transport limitations within can significantly reduce around maximum power point as well as, under certain conditions, at . An important consequence terminal cannot be assumed a priori...
It is highly probable that perovskite solar cells (PSCs) are mixed electronic-ionic conductors, with ion migration being the driving force for PSC hysteresis. However, there much not understood about interaction of other processes in cell. The key question is: what factors a influenced when ions free to move? In this contribution, we employ numerical drift-diffusion model PSCs show both anions and cations trap-mediated recombination bulk and/or at surfaces absorber can manifest...
Perovskite/silicon two-junction tandem solar cells have achieved higher power conversion efficiency than silicon cells. However, the long-term performance of modules strongly depends on degradation perovskite top
Multi-junction tandem design has been proven to be an effective means further improve the efficiency of solar cells. However, its share in photovoltaics market at present is tiny, since most efficient device comprises III-V semiconductors, which entail use expensive fabrication processes. The advent perovskite cells, have revitalized PV field with their unprecedented pace development, promises address this bottleneck. Perovskite materials could not only serve as top subcell absorber for...
Mobile ions in perovskite solar cells induce many unique transient phenomena, while their influence under steady state, the primary operating condition, has received little attention. Therefore, this work, we employ ionic-drift diffusion models to assess how steady-state distribution of mobile affects photogenerated carrier collection and redistribution due dopants energy band alignment. We demonstrate that can transform transport mechanism from a combination drift by only, which only...
The stability of perovskite cells has been the major challenge to commercialization technology. Here, we study thermal mesoporous using poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) for hole transport layer. We find evidence that gold diffusion into active layer is prevented by PTAA when cell aged at 85 °C in dark, but not under light. This seriously affects operational cells. therefore develop thermally stable semi-transparent cells, which retain more than 90% initial efficiency...
The realization of very high efficiency, stable perovskite solar cells fabricated on a large scale at low cost, has the potential to further lower cost photovoltaics. This necessitates an understanding properties required material, including carrier mobility. Perovskite also feature mobile ionic species, and impact these ions cell performance – in particular, what extent under circumstances they may limit device is not well understood. Here, we employ advanced numerical model that allows for...
Perovskite materials have emerged as promising candidates for high-efficiency silicon based tandem solar cells. Critically, the different degradation rates of perovskite and cells can affect lifetime performance modules. In this paper we design conduct experiments to investigate impact electrical optical Experiment results indicate that dominated by fill factor current reduction change transmittance The long-term module is then simulated accordingly. A maximum permissible cell rate 0.9%/year...
Correction for ‘Impact of perovskite solar cell degradation on the lifetime energy yield and economic viability perovskite/silicon tandem modules’ by Jiadong Qian <italic>et al.</italic>, <italic>Sustainable Energy Fuels</italic>, 2019, <bold>3</bold>, 1439–1447.