Balance of optical, structural, and electrical properties of textured liquid phase crystallized Si solar cells

doi:https://doi.org/10.1063/1.4922138

Title: Balance of optical, structural, and electrical properties of textured liquid phase crystallized Si solar cells

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Abstract

Liquid phase crystallized Si thin-film solar cells on nanoimprint textured glass substrates exhibiting two characteristic, but distinct different surface structures are presented. The impact of the substrate texture on light absorption, the structural Si material properties, and the resulting solar cell performance is analyzed. A pronounced periodic substrate texture with a vertical feature size of about 1 μm enables excellent light scattering and light trapping. However, it also gives rise to an enhanced Si crystal defect formation deteriorating the solar cell performance. In contrast, a random pattern with a low surface roughness of 45 nm allows for the growth of Si thin films being comparable to Si layers on planar reference substrates. Amorphous Si/crystalline Si heterojunction solar cells fabricated on the low-roughness texture exhibit a maximum open circuit voltage of 616 mV and internal quantum efficiency peak values exceeding 90%, resulting in an efficiency potential of 13.2%. This demonstrates that high quality crystalline Si thin films can be realized on nanoimprint patterned glass substrates by liquid phase crystallization inspiring the implementation of tailor-made nanophotonic light harvesting concepts into future liquid phase crystallized Si thin film solar cells on glass.

Authors:

Amkreutz, D.; Haschke, J.; Wollgarten, M.; Rech, B.; Becker, C. ^[1]

Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Division Renewable Energy, Kekuléstr. 5, 12489 Berlin (Germany)

Publication Date:: 2015-06-14

OSTI Identifier:: 22412937

Resource Type:: Journal Article

Journal Name:: Journal of Applied Physics

Additional Journal Information:: Journal Volume: 117; Journal Issue: 22; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AMORPHOUS STATE; COMPARATIVE EVALUATIONS; CRYSTAL DEFECTS; CRYSTALLIZATION; ELECTRIC POTENTIAL; ELECTRICAL PROPERTIES; GLASS; HETEROJUNCTIONS; LAYERS; LIGHT SCATTERING; QUANTUM EFFICIENCY; SILICON; SILICON SOLAR CELLS; SUBSTRATES; TEXTURE; THIN FILMS; TRAPPING; VISIBLE RADIATION

Citation Formats


                    Preidel, V., E-mail: veit.preidel@helmholtz-berlin.de, Amkreutz, D., Haschke, J., Wollgarten, M., Rech, B., and Becker, C. Balance of optical, structural, and electrical properties of textured liquid phase crystallized Si solar cells.  United States: N. p., 2015. 
        Web.  doi:10.1063/1.4922138.

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                    Preidel, V., E-mail: veit.preidel@helmholtz-berlin.de, Amkreutz, D., Haschke, J., Wollgarten, M., Rech, B., & Becker, C. Balance of optical, structural, and electrical properties of textured liquid phase crystallized Si solar cells.  United States.  https://doi.org/10.1063/1.4922138

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                    Preidel, V., E-mail: veit.preidel@helmholtz-berlin.de, Amkreutz, D., Haschke, J., Wollgarten, M., Rech, B., and Becker, C. Sun .  
        "Balance of optical, structural, and electrical properties of textured liquid phase crystallized Si solar cells".  United States.  https://doi.org/10.1063/1.4922138.

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@article{osti_22412937,

  title        = {Balance of optical, structural, and electrical properties of textured liquid phase crystallized Si solar cells},

  author       = {Preidel, V., E-mail: veit.preidel@helmholtz-berlin.de and Amkreutz, D. and Haschke, J. and Wollgarten, M. and Rech, B. and Becker, C.},

  abstractNote = {Liquid phase crystallized Si thin-film solar cells on nanoimprint textured glass substrates exhibiting two characteristic, but distinct different surface structures are presented. The impact of the substrate texture on light absorption, the structural Si material properties, and the resulting solar cell performance is analyzed. A pronounced periodic substrate texture with a vertical feature size of about 1 μm enables excellent light scattering and light trapping. However, it also gives rise to an enhanced Si crystal defect formation deteriorating the solar cell performance. In contrast, a random pattern with a low surface roughness of 45 nm allows for the growth of Si thin films being comparable to Si layers on planar reference substrates. Amorphous Si/crystalline Si heterojunction solar cells fabricated on the low-roughness texture exhibit a maximum open circuit voltage of 616 mV and internal quantum efficiency peak values exceeding 90%, resulting in an efficiency potential of 13.2%. This demonstrates that high quality crystalline Si thin films can be realized on nanoimprint patterned glass substrates by liquid phase crystallization inspiring the implementation of tailor-made nanophotonic light harvesting concepts into future liquid phase crystallized Si thin film solar cells on glass.},

  doi          = {10.1063/1.4922138},

  url          = {https://www.osti.gov/biblio/22412937},
  journal      = {Journal of Applied Physics},

  issn         = {0021-8979},

  number       = 22,

  volume       = 117,

  place        = {United States},

  year         = {2015},

  month        = {6}

}

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