Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Helmut Mackel"'
Publikováno v:
IEEE Journal of Photovoltaics. 6:1456-1465
For the optimization of alkaline texturing in industrial monocrystalline silicon solar cells, it is of paramount importance to understand the correlation between surface reflectance and surface morphology. In this study, the reflectance is related to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1b6db5ea73173269b9c5aef9213724d
https://doi.org/10.1109/jphotov.2016.2601947
https://doi.org/10.1109/jphotov.2016.2601947
Publikováno v:
Physical Review Applied. 9
Despite great progress in photovoltaic technology, actually measuring how easily current flows in a working thin-film solar cell remains difficult, due to the complex, disordered nature of the absorber material. Understanding how well charge carriers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5eac7eeab47c9f8da2da888738389b6f
https://doi.org/10.1103/physrevapplied.9.034020
https://doi.org/10.1103/physrevapplied.9.034020
Autor:
Helmut Mackel, Pietro P. Altermatt
Publikováno v:
IEEE Journal of Photovoltaics. 5:1034-1046
During the firing of screen-printed silver contacts in industrial crystalline silicon solar cells, an interfacial glass layer is formed between the silver bulk contact and the silicon substrate. By means of numerical modeling, we investigate conducti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bf1761e114984d928a0ff71e54be459
https://doi.org/10.1109/jphotov.2015.2409561
https://doi.org/10.1109/jphotov.2015.2409561
Publikováno v:
Progress in Photovoltaics: Research and Applications. 23:135-149
A theoretical analysis of the power loss and series resistance of the front side emitter in silicon solar cells is presented. Existing 1D models (infinitely long finger) and 2D models (including the effect of busbars) of emitter series resistance con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ef888e13fd963f77603c87f0544f669
https://doi.org/10.1002/pip.2403
https://doi.org/10.1002/pip.2403
Autor:
Helmut Mackel, Andres Cuevas
Publikováno v:
Progress in Photovoltaics: Research and Applications. 14:203-212
A new approach to measure the spectral response of the short-circuit current of solar cells is presented in this investigation. The main innovative feature is the light source, which produces a broad range of intensities, up to 10 suns in a quasi-ste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b117093c56a87ce89fab4afec1e00d7a
https://doi.org/10.1002/pip.661
https://doi.org/10.1002/pip.661
Autor:
Helmut Mackel, Andres Cuevas
Publikováno v:
Solar Energy Materials and Solar Cells. 81:225-237
This paper explores the possibility of measuring the open-circuit voltage of a solar cell as a function of wavelength as a tool for device characterization. Theoretical calculations and computer simulations show that the spectral response of the open
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d47b2546d4821db6c1ffd61802aba499
https://doi.org/10.1016/j.solmat.2003.11.003
https://doi.org/10.1016/j.solmat.2003.11.003
Publikováno v:
Solar Energy Materials and Solar Cells. 71:295-312
A new technique, the spectral response of the steady-state photoconductance, is proposed for solar cell characterisation in research and development. The emphasis of this paper is on the evaluation of the carrier collection efficiency of the emitter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70a6068ee28dbe877adf724f8d8c6fe0
https://doi.org/10.1016/s0927-0248(01)00089-7
https://doi.org/10.1016/s0927-0248(01)00089-7
Publikováno v:
Applied Surface Science. :633-639
The patterning of thin and thick films (100 nm-2 μm) is performed with excimer laser radiation (A = 248 nm, τ = 20 ns, e max = 5 J/cm 2 ). The laser ablation is investigated for the film systems: Fe 0.6 Co 0.4 /SiO 2 -multilayers, Tb 0.4 Fe 0.6 /Fe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::474203336d7307b4382c6785f807dd2c
https://doi.org/10.1016/s0169-4332(99)00468-7
https://doi.org/10.1016/s0169-4332(99)00468-7
Autor:
Kenneth Varner, Helmut Mackel
Publikováno v:
Progress in Photovoltaics: Research and Applications.
Contactless photoconductance measurements are commonly used to extract the emitter saturation current density (Joe) for crystalline silicon samples containing an emitter on the surface. We review the physics behind the analysis of Joe and compare the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e8954bbb24c65128dde53e2aa1ae1b3
https://doi.org/10.1002/pip.2167
https://doi.org/10.1002/pip.2167
Autor:
Helmut Mackel, Andres Cuevas
Publikováno v:
2006 IEEE 4th World Conference on Photovoltaic Energy Conference.
The minority carrier diffusion length as a function of carrier density has been extracted from the spectral response of the open-circuit voltage of silicon solar cells, which has been measured with the quasi-steady-state spectral photovoltage techniq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::278d870fc5ee5eb53d847a270dd96a55
https://doi.org/10.1109/wcpec.2006.279603
https://doi.org/10.1109/wcpec.2006.279603