Solution-processed spherical surface textures on amorphous silicon solar cells

Y. Wang, R. Tummala, L. Q. Guo, W. Zhou, M. Tao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Solution-processed spherical surface textures are demonstrated as a cost-effective antireflection coating on commercial amorphous Si solar cells. The spherical textures are formed with a monolayer of silica microspheres by convective coating, followed by a spin-on-glass film. It is found that the spherical texture reduces the reflectance of the cells in a broad wavelength range of 400 - 1,200 nm. More importantly, the spherical texture improves the efficiency of the cells at various incident angles from surface normal to at least 60°. The efficiency improves with incident angle to as high as 120/0 relative improvement, demonstrating its omni-directionality. I-V characterization reveals that the efficiency improvement is due to increased light coupling into the cells. A monolayer of silica microspheres alone reduces the efficiency by reducing the short-circuit current, and the spin-on-glass film alone reduces the efficiency by reducing the fill factor. This omni-directional surface texture represents a cost-effective antireflection approach for fixed-orientation solar panels and can be applied to both polycrystalline Si and thin-film solar cells.

Original languageEnglish (US)
Title of host publication2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009
Pages1771-1774
Number of pages4
DOIs
StatePublished - Dec 1 2009
Externally publishedYes
Event2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009 - Philadelphia, PA, United States
Duration: Jun 7 2009Jun 12 2009

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371

Other

Other2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009
CountryUnited States
CityPhiladelphia, PA
Period6/7/096/12/09

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Solution-processed spherical surface textures on amorphous silicon solar cells'. Together they form a unique fingerprint.

  • Cite this

    Wang, Y., Tummala, R., Guo, L. Q., Zhou, W., & Tao, M. (2009). Solution-processed spherical surface textures on amorphous silicon solar cells. In 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009 (pp. 1771-1774). [5411470] (Conference Record of the IEEE Photovoltaic Specialists Conference). https://doi.org/10.1109/PVSC.2009.5411470