Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Jan Nekarda"'
Publikováno v:
Progress in Photovoltaics: Research and Applications. 30:889-898
Publikováno v:
IEEE Journal of Photovoltaics. 11:606-612
In this study, we introduce a temperature screening image analysis to investigate the temperature dependence of boron-oxygen-related defect regeneration achieved by using one sample. For that purpose, we induce a temperature gradient in a single samp
Autor:
Bernd Steinhauser, Jan Paschen, Gernot Emanuel, Oliver John, Angela De Rose, Jan Nekarda, Andreas Brand
Publikováno v:
Procedia CIRP. 94:863-868
We present the design, implementation and optimization of laser metal bonding (LMB), a new approach for joining thin aluminum foils and back surfaces of solar cells with a focus on low impact on the semiconductor and good adhesion. After gaining deep
Autor:
Andreas Brand, Birger Zimmermann, Mathias List, Stefan Schellinger, Saskia Kühnhold-Pospischil, Uli Würfel, Jan Nekarda, Hans-Frieder Schleiermacher, Clemens Veit
Publikováno v:
Proceedings of the nanoGe Fall Meeting 2021.
We study the mitigation of light- and elevated temperature-induced degradation (LeTID) with high-intensity illumination treatments, placing special emphasis on inline feasibility. After the treatments, we investigate the stability upon degradation co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b184a6fd0d8f70765a3439efaa70808c
https://publica.fraunhofer.de/handle/publica/268217
https://publica.fraunhofer.de/handle/publica/268217
Autor:
Gernot Emanuel, Angela De Rose, Jan Paschen, Bernd Steinhauser, Andreas Brand, Jan Nekarda, Oliver John
Publikováno v:
2020 47th IEEE Photovoltaic Specialists Conference (PVSC).
We present the design, implementation and optimization of laser metal bonding (LMB), a new approach for joining thin aluminum foils and back surfaces of solar cells with a focus on low impact on the semiconductor and good adhesion. We succeeded in es
Publikováno v:
Solar Energy Materials and Solar Cells. 161:397-406
In this work, we present a novel technological approach to form highly boron-doped selective emitters. The selective emitters are formed by using a Laser Induced Forward Transfer Doping (DLIFT) process, which allows precise adjustment of the doping p
Autor:
Stefan W. Glunz, Ralf Preu, Ulrich Jäger, Bernd Steinhauser, Jan Benick, Hannes Rostan, Martin Hermle, Rob Steeman, Ellen Chong, Jenny Lam, Jan Nekarda
Publikováno v:
Solar Energy Materials and Solar Cells. 157:295-304
Laser diffusion from PECVD layers can result in the incorporation of impurities like nitrogen into crystalline silicon. It is shown that the nitrogen can have a significant influence on the laser doping process. The incorporated nitrogen can affect t
Autor:
Etienne Drahi, Muriel Bouttemy, Varun Arya, Jan Nekarda, Pierre-Philippe Grand, Arnaud Etcheberry, Cécile Molto, Jung Eun Lee, Anne-Marie Goncalves, Solène Béchu
Publikováno v:
Solar Energy Materials and Solar Cells
Solar Energy Materials and Solar Cells, Elsevier, 2019, 202, pp.110149. ⟨10.1016/j.solmat.2019.110149⟩
Solar Energy Materials and Solar Cells, Elsevier, 2019, 202, pp.110149. ⟨10.1016/j.solmat.2019.110149⟩
Laser contact opening is a critical step for solar cells manufacturing and needs to be optimized to achieve high efficiencies. In this paper, laser contact opening using a picosecond laser (wavelength 355 nm, pulse duration 10 ps) has been carried ou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd237d4e2cb722c17078592b74752b1d
https://hal.archives-ouvertes.fr/hal-03119383
https://hal.archives-ouvertes.fr/hal-03119383
Autor:
Saskia Kühnhold-Pospischil, Jan Nekarda, Yannic Widmaier, Thomas Kroyer, Andreas Brand, Yannick Franzl
Publikováno v:
INTERNATIONAL SYMPOSIUM ON GREEN AND SUSTAINABLE TECHNOLOGY (ISGST2019).
The Laser Transfer and Firing (LTF) process can be used for the creation of seed layers for electroplated front side metallization of silicon solar cells. In this contribution, an optical method to determine the coverage and the diameter of the trans