Andreas Lambertz
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View article: Tailoring nanoscale interfaces for perovskite–perovskite–silicon triple-junction solar cells
Tailoring nanoscale interfaces for perovskite–perovskite–silicon triple-junction solar cells Open
Triple‐junction solar cells theoretically outperform their double-junction and single‐junction counterparts in power conversion efficiency, yet practical perovskite–perovskite–silicon devices have fallen short of both theoretical limits an…
View article: Achieving High Efficiencies for Silicon Heterojunction Solar Cells Using Silver‐Free Metallization
Achieving High Efficiencies for Silicon Heterojunction Solar Cells Using Silver‐Free Metallization Open
This work investigates the influence of the metallization of low‐temperature Cu paste and AgCu paste on the performance of SHJ solar cells through a comprehensive study of two techniques—screen printing (SP) and dispensing. The research su…
View article: Detailed Bias‐Dependent Free Energy Loss Analysis for Proposing Device Optimization Strategies in Silicon Heterojunction Solar Cell Design
Detailed Bias‐Dependent Free Energy Loss Analysis for Proposing Device Optimization Strategies in Silicon Heterojunction Solar Cell Design Open
A multiscale electro‐optical device model is employed to investigate free energy and other losses in a silicon heterojunction (SHJ) solar cell. A finite element method‐based device model is coupled with free energy loss analysis (FELA) to …
View article: Damp‐Heat–Induced Degradation of Lightweight Silicon Heterojunction Solar Modules With Different Transparent Conductive Oxide Layers
Damp‐Heat–Induced Degradation of Lightweight Silicon Heterojunction Solar Modules With Different Transparent Conductive Oxide Layers Open
Lightweight photovoltaic applications are essential for diversifying the solar energy supply. This opens up vast new scenarios for solar modules and significantly boosts the capacity of renewable energy. To ensure high efficiency and stabi…
View article: Downshifting Encapsulant: Optical Simulation Evaluation of the Solution to Ultraviolet‐Induced Degradation in Silicon Heterojunction Solar Cells
Downshifting Encapsulant: Optical Simulation Evaluation of the Solution to Ultraviolet‐Induced Degradation in Silicon Heterojunction Solar Cells Open
Ultraviolet (UV)‐induced degradation (UVID) poses a significant challenge for the prospective mass production of silicon heterojunction (SHJ) solar cells, known for their high efficiency. In this study, the magnified impact of UV radiation…
View article: Insights into the Heat‐Assisted Intensive Light‐Soaking Effect on Silicon Heterojunction Solar Cells
Insights into the Heat‐Assisted Intensive Light‐Soaking Effect on Silicon Heterojunction Solar Cells Open
Heat‐assisted intensive light soaking has been proposed as an effective posttreatment to further enhance the performance of silicon heterojunction (SHJ) solar cells. In the current study, it is aimed to distinguish the effects of heat and …
View article: Hybrid interconnecting layers reduce current leakage losses in perovskite/silicon tandems with 81.8% fill factor
Hybrid interconnecting layers reduce current leakage losses in perovskite/silicon tandems with 81.8% fill factor Open
To break through the Shockley-Queisser limit of single-junction photovoltaics, monolithic two-terminal (2T) perovskite/silicon tandem solar cells (TSCs) have shown promise in recent years. Self-assembled monolayers (SAMs) as interconnectin…
View article: Reducing Voltage Loss via Dipole Tuning for Electron‐Transport in Efficient and Stable Perovskite‐Silicon Tandem Solar Cells
Reducing Voltage Loss via Dipole Tuning for Electron‐Transport in Efficient and Stable Perovskite‐Silicon Tandem Solar Cells Open
C 60 is a widely used electron selective material for p–i–n perovskite cells, however, its energy level does not match well with that of a wide‐bandgap perovskite, resulting in low open‐circuit voltage (V OC ) and fill factor ( FF ). To ov…
View article: A Review: Application of Doped Hydrogenated Nanocrystalline Silicon Oxide in High Efficiency Solar Cell Devices
A Review: Application of Doped Hydrogenated Nanocrystalline Silicon Oxide in High Efficiency Solar Cell Devices Open
Due to the unique microstructure of hydrogenated nanocrystalline silicon oxide (nc‐SiO x :H), the optoelectronic properties of this material can be tuned over a wide range, which makes it adaptable to different solar cell applications. In …
View article: Deeper Insight into the Mechanisms Behind Sputter Damage in Silicon Solar Cells Based on the Example of Nanocrystalline Silicon Carbide
Deeper Insight into the Mechanisms Behind Sputter Damage in Silicon Solar Cells Based on the Example of Nanocrystalline Silicon Carbide Open
Transparent conducting oxides, like indium tin oxide, enable lateral charge carrier transport in silicon heterojunction solar cells. However, their deposition can damage the passivation quality in the solar cell. This damage during the spu…
View article: Thin silicon heterojunction solar cells in perovskite shadow: Bottom cell prospective
Thin silicon heterojunction solar cells in perovskite shadow: Bottom cell prospective Open
Perovskite/Silicon (Pero-Si) tandem with silicon heterojunction (SHJ) bottom cells is a promising highly efficient concept, which in the case of mass production will likely rely on the same wafer feedstock as the single junction Si solar c…
View article: Origin of sputter damage during transparent conductive oxide deposition for semitransparent perovskite solar cells
Origin of sputter damage during transparent conductive oxide deposition for semitransparent perovskite solar cells Open
The origin of sputter damage during transparent conductive oxide deposition is ion bombardment rather than plasma radiation. Ion bombardment increased recombination, whereas plasma radiation reduced recombination.
View article: Mitigating Intrinsic Interfacial Degradation in Semi‐Transparent Perovskite Solar Cells for High Efficiency and Long‐Term Stability (Adv. Energy Mater. 47/2023)
Mitigating Intrinsic Interfacial Degradation in Semi‐Transparent Perovskite Solar Cells for High Efficiency and Long‐Term Stability (Adv. Energy Mater. 47/2023) Open
Semi-Transparent Perovskite Solar Cells In article number 2302147, Weiyuan Duan, Kanghoon Yim, SeJin Ahn and co-workers report a new internal degradation mechanism in semi-transparent perovskite solar cells (ITO/SnO2/perovskite/Spiro-MeOTA…
View article: Mitigating Intrinsic Interfacial Degradation in Semi‐Transparent Perovskite Solar Cells for High Efficiency and Long‐Term Stability
Mitigating Intrinsic Interfacial Degradation in Semi‐Transparent Perovskite Solar Cells for High Efficiency and Long‐Term Stability Open
Conventional semi‐transparent perovskite solar cells (ST‐PSCs) generally exhibit inferior performance and stability relative to opaque PSCs. However, a comprehensive understanding of the origins of inferior performance and stability of ST‐…
View article: Enhancing the Selectivity and Transparency of the Electron Contact in Silicon Heterojunction Solar Cells by Phosphorus Catalytic Doping
Enhancing the Selectivity and Transparency of the Electron Contact in Silicon Heterojunction Solar Cells by Phosphorus Catalytic Doping Open
An intrinsic hydrogenated amorphous silicon (a‐Si:H(i)) film and a doped silicon film are usually combined in the heterojunction contacts of silicon heterojunction (SHJ) solar cells. In this work, a post‐doping process called catalytic dop…
View article: Insights into the Si─H Bonding Configuration at the Amorphous/Crystalline Silicon Interface of Silicon Heterojunction Solar Cells by Raman and FTIR Spectroscopy
Insights into the Si─H Bonding Configuration at the Amorphous/Crystalline Silicon Interface of Silicon Heterojunction Solar Cells by Raman and FTIR Spectroscopy Open
In silicon heterojunction solar cell technology, thin layers of hydrogenated amorphous silicon (a‐Si:H) are applied as passivating contacts to the crystalline silicon (c‐Si) wafer. Thus, the properties of the a‐Si:H is crucial for the perf…
View article: Choice of Polymer, but Not Mesh Structure Variation, Reduces the Risk of Bacterial Infection with Staphylococcus aureus In Vivo
Choice of Polymer, but Not Mesh Structure Variation, Reduces the Risk of Bacterial Infection with Staphylococcus aureus In Vivo Open
Background: Synthetic mesh material is of great importance for surgical incisional hernia repair. The physical and biochemical characteristics of the mesh influence mechanical stability and the foreign body tissue reaction. The influence o…
View article: Successful Transplantation of a Liver from a Donor with HELLP Syndrome Undergoing Hypothermic Oxygenated Machine Perfusion (HOPE) Prior to Implantation
Successful Transplantation of a Liver from a Donor with HELLP Syndrome Undergoing Hypothermic Oxygenated Machine Perfusion (HOPE) Prior to Implantation Open
BACKGROUND Liver transplantation (LT) has become the treatment of choice for patients with end-stage liver disease (ESLD). The organ shortage forced clinicians to use livers from donors with certain risk factors, so-called extended-criteri…
View article: Secondary Ion Mass Spectrometry Study of Hydrogenated Amorphous Silicon Layer Disintegration upon Rapid (Laser) Annealing
Secondary Ion Mass Spectrometry Study of Hydrogenated Amorphous Silicon Layer Disintegration upon Rapid (Laser) Annealing Open
Double layers of deuterated and hydrogenated amorphous silicon (a‐Si:H) on glass are heated in the ambient by scanning with a green (532 nm) continuous wave laser. The hydrogen diffusion length in the laser spot is obtained from the deuter…
View article: The Microstructure of Underdense Hydrogenated Amorphous Silicon and its Application to Silicon Heterojunction Solar Cells
The Microstructure of Underdense Hydrogenated Amorphous Silicon and its Application to Silicon Heterojunction Solar Cells Open
The application of thin underdense hydrogenated amorphous silicon (a‐Si:H) films for passivation of crystalline Si (c‐Si) by avoiding epitaxy in silicon heterojunction (SHJ) solar cell technology has recently been proposed and successfully…