Solution-processed omnidirectional antireflection coatings on amorphous silicon solar cells

Yuehui Wang, Rajesh Tummala, L. Chen, L. Qing Guo, Weidong Zhou, Meng Tao

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Solution-processed spherical surface textures are demonstrated on commercial amorphous silicon solar cells. The texture is 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 reflectivity of the cells in the wavelength regime of 400-1200 nm, thus broad spectrum. It is also found that the spherical texture improves the efficiency of the cells at various incident angles from surface normal to at least 60°. The improvement in efficiency increases at larger incident angles to as high as 12% relative improvement, demonstrating its omnidirectionality. Current-voltage characteristics show that the efficiency improvement with coating is largely due to the increased short circuit current, while the open-circuit voltage remains the same. Therefore the efficiency improvement is attributed to more light coupled into the cells. This omnidirectional surface texture offers an attractive solution for antireflection in both polycrystalline silicon and thin-film solar cells.

Original languageEnglish (US)
Article number103501
JournalJournal of Applied Physics
Volume105
Issue number10
DOIs
StatePublished - 2009
Externally publishedYes

Fingerprint

antireflection coatings
amorphous silicon
textures
solar cells
cells
coatings
short circuit currents
silicon films
open circuit voltage
silicon dioxide
reflectance
glass
electric potential
thin films
wavelengths

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Solution-processed omnidirectional antireflection coatings on amorphous silicon solar cells. / Wang, Yuehui; Tummala, Rajesh; Chen, L.; Guo, L. Qing; Zhou, Weidong; Tao, Meng.

In: Journal of Applied Physics, Vol. 105, No. 10, 103501, 2009.

Research output: Contribution to journalArticle

Wang, Yuehui ; Tummala, Rajesh ; Chen, L. ; Guo, L. Qing ; Zhou, Weidong ; Tao, Meng. / Solution-processed omnidirectional antireflection coatings on amorphous silicon solar cells. In: Journal of Applied Physics. 2009 ; Vol. 105, No. 10.
@article{36ada7af2aea4828bb6d9b305463e3a6,
title = "Solution-processed omnidirectional antireflection coatings on amorphous silicon solar cells",
abstract = "Solution-processed spherical surface textures are demonstrated on commercial amorphous silicon solar cells. The texture is 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 reflectivity of the cells in the wavelength regime of 400-1200 nm, thus broad spectrum. It is also found that the spherical texture improves the efficiency of the cells at various incident angles from surface normal to at least 60°. The improvement in efficiency increases at larger incident angles to as high as 12{\%} relative improvement, demonstrating its omnidirectionality. Current-voltage characteristics show that the efficiency improvement with coating is largely due to the increased short circuit current, while the open-circuit voltage remains the same. Therefore the efficiency improvement is attributed to more light coupled into the cells. This omnidirectional surface texture offers an attractive solution for antireflection in both polycrystalline silicon and thin-film solar cells.",
author = "Yuehui Wang and Rajesh Tummala and L. Chen and Guo, {L. Qing} and Weidong Zhou and Meng Tao",
year = "2009",
doi = "10.1063/1.3118499",
language = "English (US)",
volume = "105",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "10",

}

TY - JOUR

T1 - Solution-processed omnidirectional antireflection coatings on amorphous silicon solar cells

AU - Wang, Yuehui

AU - Tummala, Rajesh

AU - Chen, L.

AU - Guo, L. Qing

AU - Zhou, Weidong

AU - Tao, Meng

PY - 2009

Y1 - 2009

N2 - Solution-processed spherical surface textures are demonstrated on commercial amorphous silicon solar cells. The texture is 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 reflectivity of the cells in the wavelength regime of 400-1200 nm, thus broad spectrum. It is also found that the spherical texture improves the efficiency of the cells at various incident angles from surface normal to at least 60°. The improvement in efficiency increases at larger incident angles to as high as 12% relative improvement, demonstrating its omnidirectionality. Current-voltage characteristics show that the efficiency improvement with coating is largely due to the increased short circuit current, while the open-circuit voltage remains the same. Therefore the efficiency improvement is attributed to more light coupled into the cells. This omnidirectional surface texture offers an attractive solution for antireflection in both polycrystalline silicon and thin-film solar cells.

AB - Solution-processed spherical surface textures are demonstrated on commercial amorphous silicon solar cells. The texture is 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 reflectivity of the cells in the wavelength regime of 400-1200 nm, thus broad spectrum. It is also found that the spherical texture improves the efficiency of the cells at various incident angles from surface normal to at least 60°. The improvement in efficiency increases at larger incident angles to as high as 12% relative improvement, demonstrating its omnidirectionality. Current-voltage characteristics show that the efficiency improvement with coating is largely due to the increased short circuit current, while the open-circuit voltage remains the same. Therefore the efficiency improvement is attributed to more light coupled into the cells. This omnidirectional surface texture offers an attractive solution for antireflection in both polycrystalline silicon and thin-film solar cells.

UR - http://www.scopus.com/inward/record.url?scp=66549119291&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=66549119291&partnerID=8YFLogxK

U2 - 10.1063/1.3118499

DO - 10.1063/1.3118499

M3 - Article

AN - SCOPUS:66549119291

VL - 105

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 10

M1 - 103501

ER -