Daniel A. Jacobs
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View article: 60 cm2 perovskite-silicon tandem solar cells with an efficiency of 28.9% by homogeneous passivation
60 cm2 perovskite-silicon tandem solar cells with an efficiency of 28.9% by homogeneous passivation Open
Inverted perovskite solar cells face performance limitations due to non-radiative recombination at the perovskite surfaces in devices, including functional layers. Advanced characterization and density functional theory reveal that phospho…
View article: 60 cm2 perovskite-silicon tandem solar cells with an efficiency of 28.9% by homogenous passivation
60 cm2 perovskite-silicon tandem solar cells with an efficiency of 28.9% by homogenous passivation Open
Inverted perovskite solar cells face performance limitations due to non-radiative recombination at the perovskite surfaces in devices, including functional layers. Advanced characterization and density functional theory reveal that phospho…
View article: Synergetic substrate and additive engineering for over 30%-efficient perovskite-Si tandem solar cells
Synergetic substrate and additive engineering for over 30%-efficient perovskite-Si tandem solar cells Open
Perovskite-silicon (Si) tandem solar cells are the most prominent contenders to succeed single-junction Si cells that dominate the market today. Yet, to justify the added cost of inserting a perovskite cell on top of Si, these devices shou…
View article: A Universal Perovskite/C60 Interface Modification via Atomic Layer Deposited Aluminum Oxide for Perovskite Solar Cells and Perovskite–Silicon Tandems
A Universal Perovskite/C60 Interface Modification via Atomic Layer Deposited Aluminum Oxide for Perovskite Solar Cells and Perovskite–Silicon Tandems Open
The primary performance limitation in inverted perovskite‐based solar cells is the interface between the fullerene‐based electron transport layers and the perovskite. Atomic layer deposited thin aluminum oxide (AlO X ) interlayers that red…
View article: Alleviating nanostructural phase impurities enhances the optoelectronic properties, device performance and stability of cesium-formamidinium metal–halide perovskites
Alleviating nanostructural phase impurities enhances the optoelectronic properties, device performance and stability of cesium-formamidinium metal–halide perovskites Open
The impact of the composition of the A-site cations on the intra-domain defect density in cesium-formamidinium perovskite formulations is modulated via alloying.
View article: Interface passivation for 31.25%-efficient perovskite/silicon tandem solar cells
Interface passivation for 31.25%-efficient perovskite/silicon tandem solar cells Open
Silicon solar cells are approaching their theoretical efficiency limit of 29%. This limitation can be exceeded with advanced device architectures, where two or more solar cells are stacked to improve the harvesting of solar energy. In this…
View article: High-efficiency (>30%) monolithic perovskite-Si tandem solar cells with flat front-side wafers
High-efficiency (>30%) monolithic perovskite-Si tandem solar cells with flat front-side wafers Open
Perovskite-Si tandem solar cells are the most prominent contenders to succeed commercial single-junction Si cells that dominate the market today. Yet, to justify the added cost of inserting a perovskite cell on top of Si, the tandem device…
View article: Deep-Learning Electron Diffractive Imaging
Deep-Learning Electron Diffractive Imaging Open
We report the development of deep-learning coherent electron diffractive imaging at subangstrom resolution using convolutional neural networks (CNNs) trained with only simulated data. We experimentally demonstrate this method by applying t…
View article: Lateral ion migration accelerates degradation in halide perovskite devices
Lateral ion migration accelerates degradation in halide perovskite devices Open
The migration of mobile ions in the plane of the substrate is shown to have important effects on device behaviour and stability, especially near electrode boundaries.
View article: Efficient Passivation and Low Resistivity for p<sup>+</sup>-Si/TiO<sub>2</sub> Contact by Atomic Layer Deposition
Efficient Passivation and Low Resistivity for p<sup>+</sup>-Si/TiO<sub>2</sub> Contact by Atomic Layer Deposition Open
The monolithic, two-terminal (2-T) perovskite/silicon tandem solar cell is a promising candidate to increase the power conversion efficiency beyond the theoretical limit of 29.4% for crystalline silicon solar cells. To achieve a high-effic…
View article: Instability of p–i–n perovskite solar cells under reverse bias
Instability of p–i–n perovskite solar cells under reverse bias Open
The mechanisms controlling the degradation of p–i–n perovskite solar cells in reverse bias are identified using various optoelectronic and microstructural characterization techniques.
View article: Light Management: A Key Concept in High-Efficiency Perovskite/Silicon Tandem Photovoltaics
Light Management: A Key Concept in High-Efficiency Perovskite/Silicon Tandem Photovoltaics Open
The remarkable recent progress in perovskite photovoltaics affords a novel opportunity to advance the power conversion efficiency of market-dominating crystalline silicon (c-Si) solar cells. A severe limiting factor in the development of p…
View article: The two faces of capacitance: New interpretations for electrical impedance measurements of perovskite solar cells and their relation to hysteresis
The two faces of capacitance: New interpretations for electrical impedance measurements of perovskite solar cells and their relation to hysteresis Open
Perovskite solar cells are notorious for exhibiting transient behavior not seen in conventional inorganic semiconductor devices. Significant inroads have been made into understanding this fact in terms of rapid ion migration, now a well-es…
View article: In situ recombination junction between p-Si and TiO <sub>2</sub> enables high-efficiency monolithic perovskite/Si tandem cells
In situ recombination junction between p-Si and TiO <sub>2</sub> enables high-efficiency monolithic perovskite/Si tandem cells Open
A minimalist approach to integration yields tandem solar cells with high efficiency.
View article: Metal halide perovskite: a game-changer for photovoltaics and solar devices via a tandem design
Metal halide perovskite: a game-changer for photovoltaics and solar devices via a tandem design Open
Multi-junction tandem design has been proven to be an effective means to further improve the efficiency of solar cells. However, its share in the photovoltaics market at present is tiny, since the most efficient tandem device comprises III…
View article: Device Modelling of Perovskite Solar Cells
Device Modelling of Perovskite Solar Cells Open
This thesis is primarily concerned with the electrical characterization and modelling of perovskite solar cells. Perovskite cells are a new player in the photovoltaic arena with several intriguing properties. One of these is the presence o…
View article: Hysteresis phenomena in perovskite solar cells: the many and varied effects of ionic accumulation
Hysteresis phenomena in perovskite solar cells: the many and varied effects of ionic accumulation Open
A variety of unexpected characterization results exhibited by perovskite solar cells are linked to the presence of mobile ions in the active layer, as demonstrated by detailed numerical device models.
View article: A re-evaluation of transparent conductor requirements for thin-film solar cells
A re-evaluation of transparent conductor requirements for thin-film solar cells Open
We analyse the effect of metallization on the transparent conductor requirements for thin-film solar cells, identifying new directions for the future of transparent conductor research.
View article: Photonic topological Chern insulators based on Tellegen metacrystals
Photonic topological Chern insulators based on Tellegen metacrystals Open
We demonstrate that topologically nontrivial states of light can be engineered in periodic photonic structures containing media with a Tellegen-type bianisotropic response. Whilst in such bianisotropic materials the time-reversal symmetry …