Search Results - "Kopecek, Radovan"

Bifacial Photovoltaics 2021: Status, Opportunities and Challenges by Kopecek, Radovan, Libal, Joris

“…In this paper we summarize the status of bifacial photovoltaics (PV) and explain why the move to bifaciality is unavoidable when it comes to e.g., lowest…”
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Metallization‒induced recombination losses of bifacial silicon solar cells by Edler, Alexander, Mihailetchi, Valentin D., Koduvelikulathu, Lejo J., Comparotto, Corrado, Kopecek, Radovan, Harney, Rudolf

“…In this study, we investigate the metallization‒induced recombination losses of high efficiency bifacial n‒type and p‒type crystalline Si solar cells. From the…”
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Comparative Simulations of Conductive Nitrides as Alternative Plasmonic Nanostructures for Solar Cells by David, Christin, Koduvelikulathu, Lejo Joseph, Kopecek, Radovan

“…Particle layers employing conductive transition metal nitrides have been proposed as possible alternative plasmonic materials for photovoltaic applications due…”
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Interdigitated Back Contact Technology as Final Evolution for Industrial Crystalline Single-Junction Silicon Solar Cell by Kopecek, Radovan, Buchholz, Florian, Mihailetchi, Valentin D., Libal, Joris, Lossen, Jan, Chen, Ning, Chu, Haifeng, Peter, Christoph, Timofte, Tudor, Halm, Andreas, Guo, Yonggang, Qu, Xiaoyong, Wu, Xiang, Gao, Jiaqing, Dong, Peng

“…We present our own Interdigitated Back Contact (IBC) technology, which was developed at ISC Konstanz and implemented in mass production with and at SPIC Solar…”
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Two-Dimensional Modeling of the Metallization-Induced Recombination Losses of Screen-Printed Solar Cells by Koduvelikulathu, Lejo J., Mihailetchi, Valentin D., Olibet, Sara, Rudolph, Dominik, Cabrera, Enrique, Kopecek, Radovan

“…We present an approach of implementing the experimental microscopic observations at metal-Si emitter interface into a 2-D simulation model to investigate the…”
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Performance of Bifacial PV Arrays With Fixed Tilt and Horizontal Single-Axis Tracking: Comparison of Simulated and Measured Data by Berrian, Djaber, Libal, Joris, Klenk, Markus, Nussbaumer, Hartmut, Kopecek, Radovan

“…Compared with standard monofacial photovoltaic (PV) systems, the simulation of the energy yield of bifacial PV systems is more challenging since the impact of…”
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Influence of the annealing temperature of (n) poly-Si/SiOx passivating contacts on their firing stability by Linke, Jonathan, Hoß, Jan, Buchholz, Florian, Lossen, Jan, Kopecek, Radovan

“…Several works have been published recently regarding firing stability of passivating contacts featuring P-doped polysilicon on an interfacial oxide…”
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Design, realization and loss analysis of efficient low-cost large-area bifacial interdigitated-back-contact solar cells with front floating emitter by Ma, Jikui, Song, Yuhang, Qiao, Shuang, Liu, Dawei, Ding, Zhenjun, Kopecek, Radovan, Chen, Jianhui, Zhang, Chunfu, Chen, Mingjing

“…Large-area (251.96 cm2) bifacial interdigitated-back-contact (IBC) solar cells are presented in this work. We employ front floating emitter (FFE) to replace…”
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N-type single-crystalline Si solar cells: Front side metallization for solar cells reaching 20% efficiency by Kumar, Praveen, Pfeffer, Michael, Willsch, Benjamin, Eibl, Oliver, Koduvelikulathu, Lejo J., Mihailetchi, Valentin D., Kopecek, Radovan

“…Screen printed front side contacts were investigated in n-type, high efficiency, single-crystalline Si solar cells with B doped emitters. Cells were processed…”
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Analysis of the Annual Performance of Bifacial Modules and Optimization Methods by Yusufoglu, Ufuk A., Pletzer, Tobias M., Koduvelikulathu, Lejo Joseph, Comparotto, Corrado, Kopecek, Radovan, Kurz, Heinrich

“…Bifacial modules have the advantage of capturing sunlight from front as well as from rear surfaces, and therefore, they are able to produce larger amounts of…”
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Influence of Polysilicon Thickness on Properties of Screen‐Printed Silver Paste Metallized Silicon Oxide/Polysilicon Passivated Contacts by Chaudhary, Aditya, Hoß, Jan, Lossen, Jan, Huster, Frank, Kopecek, Radovan, van Swaaij, René, Zeman, Miro

“…This work investigates how the thickness of the polysilicon layer and temperatures during contact sintering influence the properties of SiOx/polysilicon…”
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Influence of Silicon Substrate Surface Finish on the Screen‐Printed Silver Metallization of Polysilicon‐Based Passivating Contacts by Chaudhary, Aditya, Hoß, Jan, Lossen, Jan, Huster, Frank, Kopecek, Radovan, van Swaaij, René, Zeman, Miro

“…Passivated contact based on a thin interfacial oxide and a highly doped polysilicon layer has emerged as the next evolutionary step to increase the…”
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Potential for photogenerated current for silicon based photovoltaic modules in the Atacama Desert by Ferrada, Pablo, Marzo, Aitor, Cabrera, Enrique, Chu, Haifeng, del Campo, Valeria, Rabanal, Jorge, Diaz-Almeida, Daniel, Schneider, Andreas, Kopecek, Radovan

“…•PV glass and encapsulants were evaluated in terms of photo-current density (Jm).•Evaluation was calculated with AM1.17 for Atacama Desert and AM1.5 Reference…”
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Surface Passivation of Boron-Diffused Junctions by a Borosilicate Glass and In Situ Grown Silicon Dioxide Interface Layer by Mihailetchi, Valentin D., Haifeng Chu, Lossen, Jan, Kopecek, Radovan

“…An in situ oxidation during the boron tribromide diffusion process to form p + -doped junctions on crystalline Si solar cells leads to the formation of a layer…”
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Screen Printed Fire-Through Contact Formation for Polysilicon-Passivated Contacts and Phosphorus-Diffused Contacts by Chaudhary, Aditya, Hos, Jan, Lossen, Jan, Huster, Frank, Kopecek, Radovan, van Swaaij, Rene, Zeman, Miro

“…In this article, we investigate the passivation quality and electrical contact properties for samples with a 150 nm thick n + polysilicon layer in comparison…”
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Investigation on Industrial Screen-Printed Aluminum Point Contact and Its Application in n-PERT Rear Junction Solar Cells by Peng, Zih-Wei, Nakahara, Masahiro, Buck, Thomas, Kopecek, Radovan

“…As compared with the traditional back surface field (BSF) solar cells, the n-type passivated emitter rear and totally diffused rear-junction (n-PERT-RJ) solar…”
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Industrial Screen-Printed n-PERT-RJ Solar Cells: Efficiencies Beyond 22% and Open-Circuit Voltages Approaching 700 mV by Peng, Zih-Wei, Buck, Thomas, Koduvelikulathu, Lejo J., Mihailetchi, Valentin D., Kopecek, Radovan

“…Stable high voltages in solar cells can be transferred directly to modules with no losses and are becoming increasingly important. Solar cells with high…”
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Impact of excess phosphorus doping and Si crystalline defects on Ag crystallite nucleation and growth in silver screen-printed Si solar cells by Cabrera, Enrique, Olibet, Sara, Rudolph, Dominik, Vullum, Per Erik, Kopecek, Radovan, Reinke, Daniel, Herzog, Carmen, Schwaderer, Daniel, Schubert, Gunnar

“…Good quality contacts between metal and silicon emitter are crucial for high crystalline solar cell efficiencies. We investigate the impact of defects…”
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Modeling the Impact of Bulk Resistivity on Bifacial n-PERT Rear-Junction Solar Cells by Peng, Zih-Wei, Koduvelikulathu, Lejo J., Kopecek, Radovan

“…This work mainly focuses on modeling the impact of bulk resistivity pb on the bifacial n-type passivated emitter rear and totally diffused rear-junction…”
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The impact of bulk resistivity on bifacial n-PERT rear junction solar cells by Peng, Zih-Wei, Koduvelikulathu, Lejo J., Kopecek, Radovan

“…This work mainly focuses on the impact of bulk resistivity (ρ b ) on bifacial n-type passivated emitter rear and totally diffused rear-junction (n-PERT-RJ)…”
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