Ivan Gordon
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View article: Optics for Terawatt-Scale Photovoltaics – Review and Perspectives
Optics for Terawatt-Scale Photovoltaics – Review and Perspectives Open
Photovoltaics—a mature technology—is set to play a vital role in achieving a carbon-free energy system. This article examines the pivotal role of optics in advancing photovoltaics. We identify key scientific research areas where the optics…
View article: Optics for Terawatt-Scale Photovoltaics – Review and Perspectives
Optics for Terawatt-Scale Photovoltaics – Review and Perspectives Open
Photovoltaics—a mature technology—is set to play a vital role in achieving a carbon-free energy system. This article examines the pivotal role of optics in advancing photovoltaics. We identify key scientific research areas where the optics…
View article: Optics for Terawatt-Scale Photovoltaics – Review and Perspectives
Optics for Terawatt-Scale Photovoltaics – Review and Perspectives Open
Photovoltaics—a mature technology—is set to play a vital role in achieving a carbon-free energy system. This article examines the pivotal role of optics in advancing photovoltaics. We identify key scientific research areas where the optics…
View article: Optics for terawatt-scale photovoltaics: review and perspectives
Optics for terawatt-scale photovoltaics: review and perspectives Open
Photovoltaics, a mature technology, is set to play a vital role in achieving a carbon-free energy system. This article examines the pivotal role of optics in advancing photovoltaics. We identify key scientific research areas where the opti…
View article: Sky Images for Short-Term Solar Irradiance Forecast: A Comparative Study of Linear Machine Learning Models
Sky Images for Short-Term Solar Irradiance Forecast: A Comparative Study of Linear Machine Learning Models Open
An accurate solar irradiance forecast is critical to the reliable operation of electrical grids with increasing integration of photovoltaic systems. This study compares short-term solar irradiance forecasts based on sky images using seven …
View article: Overview of key results achieved in H2020 HighLite project helping to raise the EU PV industries' competitiveness
Overview of key results achieved in H2020 HighLite project helping to raise the EU PV industries' competitiveness Open
The EU crystalline silicon (c‐Si) PV manufacturing industry has faced strong foreign competition in the last decade. To strive in this competitive environment and differentiate itself from the competition, the EU c‐Si PV manufacturing indu…
View article: The Role of Silicon Heterojunction and TCO Barriers on the Operation of Silicon Heterojunction Solar Cells: Comparison between Theory and Experiment
The Role of Silicon Heterojunction and TCO Barriers on the Operation of Silicon Heterojunction Solar Cells: Comparison between Theory and Experiment Open
Photovoltaic devices based on amorphous silicon/crystalline silicon (a-Si:H/c-Si) heterojunction interfaces hold the highest efficiency as of date in the class of silicon-based devices with efficiencies exceeding 26% and are regarded as a …
View article: Application of a Genetic Algorithm in Four-Terminal Perovskite/Crystalline-Silicon Tandem Devices
Application of a Genetic Algorithm in Four-Terminal Perovskite/Crystalline-Silicon Tandem Devices Open
Perovskite/crystalline-silicon (c-Si) tandem solar cells offer a viable roadmap for reaching power conversion efficiencies beyond 30%. In this configuration, however, the silicon cell now mainly receives an infrared rich illumination spect…
View article: Low Work Function Ytterbium Silicide Contact for Doping-Free Silicon Solar Cells
Low Work Function Ytterbium Silicide Contact for Doping-Free Silicon Solar Cells Open
Metal silicide is a well-known material for contact layers; however, it has not been tested in the context of doping-free carrier selective contacts. Thin film deposition of an appropriate metal with mild annealing treatment is an interest…
View article: Infrared Absorption Enhancement Using Periodic Inverse Nanopyramids in Crystalline-Silicon Bottom Cells for Application in Tandem Devices
Infrared Absorption Enhancement Using Periodic Inverse Nanopyramids in Crystalline-Silicon Bottom Cells for Application in Tandem Devices Open
Carefully tailored periodic nanostructures on the light wavelength scale, such as diffraction gratings, benefit from wave optics for efficiently trapping the weakly absorbing infrared photons in crystalline-silicon (c-Si) absorbers. In con…
View article: Investigating the Effect of Interstitial Fe Impurity Contamination on n-Type Cz-Silicon Material for High Efficiency Solar Cell Processing
Investigating the Effect of Interstitial Fe Impurity Contamination on n-Type Cz-Silicon Material for High Efficiency Solar Cell Processing Open
In this work the impact of iron contamination on n-type cz-silicon material is investigated mimicking a silicon solar cell manufacturing process flow. The Fe impurities are deposited on the wafer surface and driven in by a high temperature…
View article: Coupled modelling approach for optimization of bifacial silicon heterojunction solar cells with multi-scale interface textures
Coupled modelling approach for optimization of bifacial silicon heterojunction solar cells with multi-scale interface textures Open
For advanced optical analysis and optimization of solar cell structures with multi-scale interface textures, we applied a coupled modelling approach (CMA), where we couple the rigorous coupled wave analysis method with ray tracing and tran…
View article: Performance and Thermal Stability of an a-Si:H/TiO<sub><i>x</i></sub>/Yb Stack as an Electron-Selective Contact in Silicon Heterojunction Solar Cells
Performance and Thermal Stability of an a-Si:H/TiO<sub><i>x</i></sub>/Yb Stack as an Electron-Selective Contact in Silicon Heterojunction Solar Cells Open
Low contact resistivity (ρc) and low recombination current density at the metallized area (J0,metal) are the key parameters for an electron-selective contact in solar cells, and an i-a-Si:H/TiOx/low work function metal (ATOM) structure cou…
View article: A novel silicon heterojunction IBC process flow using partial etching of doped a‐Si:H to switch from hole contact to electron contact <i>in situ</i> with efficiencies close to 23%
A novel silicon heterojunction IBC process flow using partial etching of doped a‐Si:H to switch from hole contact to electron contact <i>in situ</i> with efficiencies close to 23% Open
We present a novel process sequence to simplify the rear‐side patterning of the silicon heterojunction interdigitated back contact (HJ IBC) cells. In this approach, interdigitated strips of a‐Si:H (i/p + ) hole contact and a‐Si:H (i/n + ) …
View article: Exceeding 23% Screen-Printed Rear-Emitter Bifacial n-PERT Cells
Exceeding 23% Screen-Printed Rear-Emitter Bifacial n-PERT Cells Open
This work reports the latest results at imec of rear emitter bifacial Passivated Emitter, Rear Totally diffused (PERT) cells, processed on large area (243.3 cm2), 170 µm thick n-type Cz substrates. The cells feature a selective front side …
View article: Ultrathin CIGS Solar Cells with Passivated and Highly Reflective Back Contacts – Results from the ARCIGS-M Consortium
Ultrathin CIGS Solar Cells with Passivated and Highly Reflective Back Contacts – Results from the ARCIGS-M Consortium Open
In this work, we report results from the EU-funded project ARCIGS-M. The project started in 2016 and aims to reduce the use of indium and gallium by enabling the use of very thin Cu(In,Ga)Se2 (CIGS) layers while retaining high efficiency a…
View article: Passivating electron‐selective contacts for silicon solar cells based on an a‐Si:H/TiO<sub><i>x</i></sub> stack and a low work function metal
Passivating electron‐selective contacts for silicon solar cells based on an a‐Si:H/TiO<sub><i>x</i></sub> stack and a low work function metal Open
In this work, the ATOM (intrinsic a‐Si:H/TiO x /low work function metal) structure is investigated to realize high‐performance passivating electron‐selective contacts for crystalline silicon solar cells. The absence of a highly doped Si re…
View article: Implementation of a Novel Silicon Heterojunction IBC Process Flow Using Partial Etching of Doped a-Si:H with Efficiencies Close to 23%
Implementation of a Novel Silicon Heterojunction IBC Process Flow Using Partial Etching of Doped a-Si:H with Efficiencies Close to 23% Open
We present a novel process sequence to simplify the rear-side patterning of the heterojunction IBC cells. In this approach, interdigitated strips of a-Si:H (i/p+) and a-Si:H (i/n+) are achieved by partially etching a blanket a-Si:H (i/p+) …
View article: Silicon heterojunction cells with improved spectral response using n-type µc-Si from a novel PECVD approach
Silicon heterojunction cells with improved spectral response using n-type µc-Si from a novel PECVD approach Open
One of the promising ways to increase the efficiency of silicon heterojunction (SHJ) cells is to replace the doped hydrogenated amorphous silicon (a-Si:H) contact layer by doped hydrogenated microcrystalline silicon (mu c-Si:H) which has b…
View article: Evidence of TiOx reduction at the SiOx/TiOx interface of passivating electron-selective contacts
Evidence of TiOx reduction at the SiOx/TiOx interface of passivating electron-selective contacts Open
A TiOx layer is well known as an electron-selective contact material because of its asymmetric band offsets with respect to c-Si. When applying TiOx layers as passivating electron-selective contacts, forming sub-stoichiometric TiOx is impo…
View article: Analytical modelling of via-associated recombination losses in MWT solar cells
Analytical modelling of via-associated recombination losses in MWT solar cells Open
This work focuses on analytical modelling as an alternative to numerical simulations for determining via-related recombination losses in MWT silicon solar cells. Two new analytical models are presented in this framework. The first model de…