Nano-imprint lithography for advanced light management concepts in multi-junction solar cells

AbstractAn efficient utilization of the sun spectrum is a key issue in the field of thin-film silicon solar cell technology. Therefore, different strategies for enhanced light absorption were presented in the last years. In order to achieve a better understanding of light scattering at nanotextured interfaces the optical properties of a large variety of samples were studied. The angle resolved scattering behavior was analyzed by means of a developed ray tracing model. As an alternative to randomly textured substrates, the influence of periodically textured substrates on the light propagation in solar cells was experimentally and numerically studied with respect to improved light in-coupling and light trapping. Based on a deeper understanding a new tandem cell structure with a diffractive element between the top and bottom cell was developed. Finally, the influence of metallic nanoparticles on the cell performance was studied.

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Efficient post passivation light-management concepts for silicon heterojunction solar cells

2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC) ◽

10.1109/pvsc.2016.7750207 ◽

2016 ◽

Author(s):

Michael Smeets ◽

Matthias Meier ◽

Florian Lentz ◽

Kaining Ding ◽

Ulrich Wilhelm Paetzold ◽

...

Keyword(s):

Solar Cells ◽

Heterojunction Solar Cells ◽

Management Concepts ◽

Light Management ◽

Silicon Heterojunction Solar Cells

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Nanophotonic perovskite thin-film solar cells by thermal nano-imprint lithography

OSA Advanced Photonics Congress (AP) 2019 (IPR, Networks, NOMA, SPPCom, PVLED) ◽

10.1364/pvled.2019.pm4c.3 ◽

2019 ◽

Author(s):

Raphael Schmager ◽

Ihteaz M. Hossain ◽

Yidenekachew J. Donie ◽

Fabian Schackmar ◽

Guillaume Gomard ◽

...

Keyword(s):

Thin Film ◽

Solar Cells ◽

Thin Film Solar Cells ◽

Imprint Lithography ◽

Nano Imprint

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Investigation on Nanorod TCO Light-trapping for a-Si:H Solar Cells in Superstrate Configuration

MRS Proceedings ◽

10.1557/opl.2012.1017 ◽

2012 ◽

Vol 1426 ◽

pp. 111-116

Author(s):

Martin Vehse ◽

Stefan Geißendörfer ◽

Tobias Voss ◽

Jan-Peter Richters ◽

Benedikt Schumacher ◽

...

Keyword(s):

Solar Cells ◽

Light Trapping ◽

Transparent Conductive Oxide ◽

Nanorod Array ◽

Management Concepts ◽

Trapping Solution ◽

Electrochemically Deposited ◽

Light Management ◽

Zno Rods ◽

Array Geometry

ABSTRACTLight trapping due to rough transparent conductive oxide (TCO) surfaces is a common and industrially applied technique in thin film silicon solar cells. In this study, we demonstrate a novel light trapping solution using electrochemically deposited, highly doped zinc oxide (ZnO) nanorod arrays which goes beyond standard light management concepts. The n-doped ZnO rods enable the application as front electrode in superstrate configuration. We explain our experimental results by multidimensional solar cell simulations and show how the nanorod array geometry influences the cell performance. The requirement is demonstrated to choose an appropriate average nanorod distance which strongly influences the electrical cell characteristics. The results clearly outline the potential of TCO nanorod technology for enhanced light trapping.

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