Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Gerhard Willeke"'
Autor:
Stefan W. Glunz, Andreas Gombert, Uwe Rau, Gerhard Willeke, Marius Peters, Benedikt Bläsi, Rudolf Zentel, Jan Christoph Goldschmidt, Lorenz Steidl, Liv Prönneke
Publikováno v:
physica status solidi (a). 205:2811-2821
In this study we present a theoretical and experimental analy- sis of the application of photonic band stop filters on top of photovoltaic fluorescent concentrators in order to increase the photon collection efficiency. The light guiding effect of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77e5a41e13d8f912a864becefe401b43
https://doi.org/10.1002/pssa.200880456
https://doi.org/10.1002/pssa.200880456
Autor:
Kristian O. Sylvester-Hvid, Birger Zimmermann, Nicholas Keegan, Gerhard Willeke, Moritz Riede, Andreas W. Liehr, Markus Glatthaar, Andreas Gombert, Michael Niggemann, Tobias Ziegler
Publikováno v:
Progress in Photovoltaics: Research and Applications. 16:561-576
In this paper we present a high throughput testing setup for organic solar cells that is necessary for an efficient analysis of their behaviour. The setup comprises process parameter logging, automated measurement data acquisition and subsequent data
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::613f3858dd6c8c9169572df869009028
https://doi.org/10.1002/pip.836
https://doi.org/10.1002/pip.836
Publikováno v:
Applied Physics A. 93:99-103
Laser Chemical Processing (LCP) is presented as a novel microstructuring method for multiple applications. Via the combination of a chemical liquid jet and a laser beam, thermochemical and photochemical reactions can be initiated. Due to the free cho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::037207828c6eb62e36359ea897bd32ce
https://doi.org/10.1007/s00339-008-4723-8
https://doi.org/10.1007/s00339-008-4723-8
Publikováno v:
Applied Physics A. 92:987-991
A numerical software has been developed to simulate heating, enthalpy-based phase changes and ablation of silicon during pulsed or continuous-wave laser irradiation. The unsteady heat transfer equation is solved by finite differences in two or three
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c333b90c9d1d6d5c2fdbf6e565236c43
https://doi.org/10.1007/s00339-008-4598-8
https://doi.org/10.1007/s00339-008-4598-8
Publikováno v:
Solar Energy Materials and Solar Cells. 91:1638-1644
In this paper, we review the device physics to explain the necessity of edge isolation as well as the various common methods for performing this important step. In order to assess these processes, different aspects have to be taken into consideration
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8d9607c4ba4f5ebeadeb685b0e08019
https://doi.org/10.1016/j.solmat.2007.05.028
https://doi.org/10.1016/j.solmat.2007.05.028
Publikováno v:
Progress in Photovoltaics: Research and Applications. 14:711-719
Measurements of the dislocation density are compared with locally resolved measurements of carrier lifetime for p-type multicrystalline silicon. A correlation between dislocation density and carrier recombination was found: high carrier lifetimes (>1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5fbd2bc65b47b8d7abe4f101067a165
https://doi.org/10.1002/pip.736
https://doi.org/10.1002/pip.736
Publikováno v:
Solar Energy. 77:865-875
Crystalline silicon thin-film solar cells combine the advantages of the stability and high-efficiency potential of crystalline silicon solar cell technology with the low material utilization of the thin-film solar cell technology. At Fraunhofer ISE t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::678a3e950110e7d272874b461984d7e2
https://doi.org/10.1016/j.solener.2004.08.021
https://doi.org/10.1016/j.solener.2004.08.021
Publikováno v:
Progress in Photovoltaics: Research and Applications. 12:553-558
This paper presents the first conversion efficiency above 20% for a multicrystalline silicon solar cell. The application of wet oxidation for rear surface passivation significantly reduces the process temperature and therefore prevents the degradatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce01a65babf104e2fe529b78bb0aa603
https://doi.org/10.1002/pip.583
https://doi.org/10.1002/pip.583
Autor:
O. Schultz, R. Schindler, S. Peters, Daniel Biro, Ralf Preu, Gerhard Willeke, R. Ludemann, D.M. Huljic, D. Zickermann
Publikováno v:
Solar Energy Materials and Solar Cells. 74:35-41
A novel diffusion system for in-line rapid thermal diffusion is presented. The lamp-heated furnace has a low thermal mass and a metal free transport system based on the walking beam principle. The furnace has been used to process first solar cells wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3607511fef50f8155033c6a9eae05166
https://doi.org/10.1016/s0927-0248(02)00045-4
https://doi.org/10.1016/s0927-0248(02)00045-4
Publikováno v:
Solar Energy Materials and Solar Cells. 74:261-266
The development of a low-cost substrate is one of the major technological challenges for crystalline Si thin-film solar cells. Zirconium silicate (ZrSiO 4 ) ceramics is a material which can meet the demanding physical requirements as well as the cost
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fb4fda7b58ff8d99eb8666302c4f36b
https://doi.org/10.1016/s0927-0248(02)00082-x
https://doi.org/10.1016/s0927-0248(02)00082-x