Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Zellen und Module"'
Autor:
Daniel Biro, Dietmar Borchert, Mathias Kamp, Holger Reinecke, David Stüwe, Roman Keding, Robert Woehl, Christian Reichel, Andreas Wolf
Publikováno v:
IEEE Journal of Photovoltaics. 3:1236-1242
In this paper, first generation back-contact back-junction (BC-BJ) silicon solar cells with cell efficiencies well above eta = 20% were fabricated. The process sequence is industrially feasible, requires only one high-temperature step (co-diffusion),
Publikováno v:
IEEE Journal of Photovoltaics. 3:635-640
In this study, we investigate the influence of different diffusion temperature profiles on the interstitial iron concentration before and after contact firing. It is shown that the positive influence of a low-temperature anneal after phosphorus diffu
Autor:
Tonio Buonassisi, Jonas Schön, Antti Haarahiltunen, Martin C. Schubert, David P. Fenning, Wilhelm Warta, Hele Savin
Publikováno v:
IEEE JOURNAL OF PHOTOVOLTAICS. 3(1):131-137
We simulate the precipitation of iron during the multicrystalline ingot crystallization process and the redistribution of iron during subsequent phosphorus diffusion gettering with a 2-D model. We compare the simulated size distribution of the precip
Autor:
Anamaria Moldovan, Achim Kraft, Markus Glatthaar, Limeng Ni, Jonas Bartsch, Andre Kalio, Stefan W. Glunz
Publikováno v:
Energy Procedia. 38:753-759
The present work deals with the attack of different chemicals used in nickel and copper plating electrolytes, on screen printed silver front side contacts, which lowers the adhesion and hinders industrial implementation. Dipping tests with four diffe
Autor:
Jonas Haunschild, Teodora Chipei, Michael Linse, Isolde E. Reis, Matthias Demant, Benjamin Thaidigsmann, Stefan Rein
Publikováno v:
Solar Energy Materials and Solar Cells. 106:71-75
Photoluminescence (PL) imaging is a promising characterization technique for rating and sorting of multicrystalline silicon (mc-Si) as-cut wafers concerning to their material quality. It is inline applicable and yields high resolution images showing
Autor:
Wilhelm Warta, Martin C. Schubert, Wolfram Kwapil, Stefan Rein, Juliane Broisch, Florian Schindler, Achim Kimmerle
Publikováno v:
Solar Energy Materials and Solar Cells. 106:31-36
Carrier mobility in silicon plays a crucial role for photovoltaic applications. While the influence of doping on mobility in standard monocrystalline silicon is well understood, recent research has been focused on the effects of crystal defects in mu
Publikováno v:
Solar Energy Materials and Solar Cells. 98:441-447
In this paper we measure, spatially resolved, the efficiency potential of multicrystalline material. The excess carrier lifetime in the bulk affects the open-circuit voltage, the short-circuit current and the fill factor of a solar cell differently a
Publikováno v:
Energy Procedia. 27:259-266
This paper is revisiting the problem of recombination on locally processed area (contacts, local doping …), based on the concept of point recombination rate (pLPA). The newly introduced effective point recombination rate (peff) can be easily determ
Publikováno v:
Energy Procedia. 27:617-623
To enable a concentration control in the acidic texturing process we have closed the feedback loop from analytical data to the dosing mechanism of the used process tool. In order to analyze the process bath we used near-infrared spectroscopy in an on
Publikováno v:
IEEE Transactions on Electron Devices. 58:2874-2877
Microscopic laser-doped regions in advanced solar cell concepts are analyzed to determine the doping density and to identify the damage caused by the laser process. For these investigations, microphotoluminescence spectroscopy and micro-Raman spectro