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pro vyhledávání: '"Gottfried H. Bauer"'
Autor:
Rudolf Brüggemann, Gottfried H. Bauer, Niklas Nilius, Gerhard Jakob, Sebastian ten Haaf, Hendrik Sträter
Publikováno v:
physica status solidi (b). 251:2247-2256
authorenWe present a temperature- and intensity-dependent photoluminescence (PL) study of the binary semiconductor on the mm-scale and a laterally resolved PL measurement with a resolution of nm. The films can show a rather rough surface with needles
Autor:
Thomas Orgis, A. Weber, Dimitrios Hariskos, Roland Mainz, O. Neumann, Gottfried H. Bauer, Roland Scheer, Wolfram Witte, H. Rodriguez-Alvarez, Jens Dietrich, Hans-Werner Schock, Karsten Albe, Daniel Abou-Ras, Max Meessen, Stefan Paetel, Rudolf Brüggemann, Johan Pohl, Jürgen Christen, Christian Boit, Michael Powalla, Matthias Maiberg, Thomas Unold, Mathias Müller, Frank Bertram, A. Eicke
Publikováno v:
Progress in Photovoltaics: Research and Applications. 23:717-733
The gallium gradient in Cu(In,Ga)Se2 (CIGS) layers, which forms during the two industrially relevant deposition routes, the sequential and co-evaporation processes, plays a key role in the device performance of CIGS thin-film modules. In this contrib
Publikováno v:
physica status solidi (a). 211:1128-1133
Spectral photoluminescence emitted from the front compared to the rear side of a semiconductor layer like a photovoltaic absorber is shown to exhibit significant differences in the high-energy regime. This arises from the excess-carrier depth profile
Publikováno v:
Thin Solid Films. 535:283-286
We report on comparative electroluminescence and photoluminescence measurements on Cu(In,Ga)Se 2 solar cells and demonstrate that the spectral peak value or the integrated luminescence spectrum may not always reflect the photovoltaic “quality” in
Publikováno v:
physica status solidi (a). 210:1107-1114
We have bridged a pair of gold electrodes through chains and arrays of gold nanoparticles (NPs), which were stabilized by a coating of citrate molecules. We performed a systematic and comparative analysis of current–voltage (I–V) characteristics
Autor:
Sebastian Siol, Hendrik Sträter, Gottfried H. Bauer, Rudolf Brüggemann, Wolfram Jaegermann, Andreas Klein
Publikováno v:
MRS Proceedings. 1538:191-196
We have studied Cu2S absorber layers prepared by physical vapor deposition (PVD) by calibrated spectral photoluminescence (PL) and by confocal PL as function of temperature T and excitation fluxes to obtain the absolute PL-yield at an excitation flux
Autor:
Gottfried H. Bauer
This concise primer on photovoltaic solar energy conversion invites readers to reflect on the conversion of solar light into energy at the most fundamental level and encourages newcomers to the field to help find meaningful answers on how photovoltai
Publikováno v:
Solar Energy Materials and Solar Cells. 99:345-348
Composite material solar cells have been proposed and even recently processed with dye sensitizers embedded in a microcrystalline silicon thin film matrix to enhance absorption. In this contribution we present calculations to estimate the efficiency
Publikováno v:
Progress in Photovoltaics: Research and Applications. 21:554-560
Fluorescence collectors (FSCs) offer the possibility to collect and concentrate direct and ambient light and are, thereby, an option to decrease the cost of high-efficiency solar modules. So far, scattering, absorption and reabsorption of the incomin
Publikováno v:
Physics Letters A. 375:4041-4044
We have fabricated and analyzed devices where an electrode gap was bridged by a chain of citrate stabilized gold particles. The current–voltage characteristic I ∼ ( V − V t ) ζ with voltage threshold V t ≈ 0 and scaling exponent ζ = 0.91 is