KJ
K. Jager
24 records found
1
Authored
Thin-film Si solar cell technology is a promising photovoltaic (PV) technology for delivering low-cost solar electricity. A drawback of this technology is a relatively low stabilized efficiency of modules that varies between 5 to 10%. Light management plays a crucial role in incr
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We present a full scattering model for nano-textured interfaces as they are present in thin film silicon solar cells. The model is based on the scalar scattering theory and predicts measured scattering parameters well.@en
The angular intensity distribution (AID) is a major parameter for evaluating scattering of light by surface-textured thin films. We discuss how the AID can be determined in the near ultraviolet, the visible and the near infrared and evaluate the used method by comparing the obtai
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Due to the increasing complexity of thin-film silicon solar cells, the role of computer modeling for analyzing and designing these devices becomes increasingly important. The ASA program was used to study two of these advanced devices. The simulations of an amorphous silicon sola
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Recent developments on scattering models based on the scalar scattering theory allow to estimate the angular intensity distribution and the haze in both transmission and reflection for nano-textured interfaces created by arbitrary materials. In this contribution, such a scatterin
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Textured interfaces in thin-film silicon solar cells improve the efficiency by light scattering. A technique to get experimental access to the angular intensity distribution (AID) at textured interfaces of the transparent conductive oxide (TCO) and silicon is introduced. Measurem
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The scattering properties of transparent conductive oxide (TCO) layers are fundamentally related to the performance of thin film silicon solar cells. In this study we introduce an experimental technique to access light scattering properties at textured TCO-silicon interfaces. The
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An accurate characterization method is developed to determine the refractive index of smooth and surface-textured transparent conductive oxide (TCOs) films. The properties are obtained from simultaneous fitting of simulated specular reflectance/transmittance spectra to spectrosco
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Light trapping in state-of-the-art thin-film silicon solar cells is accomplished by scattering of light at rough interfaces. Further enhancement of light absorption in the absorber layers can be achieved by optimizing the scattering via designing the morphology of these interface
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Photon management is one of the key issues for improving the performance of thin-film silicon solar cells. An important part of the photon management is light trapping that helps to confine photons inside the thin absorber layers. At present light trapping is accomplished by the
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Scattering properties of surface-textured thin films that are used in thin-film silicon solar cells, such as angular intensity distribution and haze, were calculated with the scalar scattering theory. Good agreement with measured data was achieved.@en
We present a mathematical model that relates the surface morphology of randomly surface-textured thin films with the intensity distribution of scattered light. The model is based on the first order Born approximation [see e. g., M. Born and E. Wolf, Principles of Optics, 7th ed.
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