Investigation near IR absorption in thin crystalline Si wafers with randomly etched nano-pillars

Nurfarizza Surhada Mohd Nasir, Nurul Aqidah Mohd Sinin, Suhaila Sepeai, Cheow Siu Leong, Kamaruzzaman Sopian, Saleem H. Zaidi

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

Abstract

Significant research has been focused on optimizing efficiency of crystalline silicon solar cells with nanostructured surfaces. Light absorption is greatly enhanced by light trapping in nanostructures. The main focus of research work presented here is to enhance the broadband light absorption in randomly etched nano-pillar textures. The nano-pillars were formed through metal-assisted chemical etching (MACE) process with silver nanoparticles serving as the etch masks. Uniformly distributed nano-pillars (SiNPs) were fabricated using single step etch process. Nano-pillars were fabricated on thin (∼ 150 μm) c-Si substrates by immersion into an aqueous solution of HF, AgNO3, and H2O2. The nano-pillars morphology and optical response were characterized with Scanning Electron Microscope (SEM), Atomic Force Microscopy (AFM), and near IR transmission. The performance of growth nano-pillars on as-cut (without saw damage removal process) and planar substrate (with saw damage removed) was evaluated. Typical dimensions of the vertically-etched anisotropic Si nano-pillars were diameter ∼ 80-250 nm, depth ∼ 500-1000 nm, and separation ∼ 300-500 nm for etching times in 5 and 20 minutes range. Such nano-pillars exhibit almost zero reflection and are expected to enhance efficiency of the solar cell.

Original languageEnglish
Title of host publication1st UKM-ISESCO-COMSATS International Workshop on Nanotechnology for Young Scientists, IWYS 2016
PublisherAmerican Institute of Physics Inc.
Volume1838
ISBN (Electronic)9780735415089
DOIs
Publication statusPublished - 5 May 2017
Event1st UKM-ISESCO-COMSATS International Workshop on Nanotechnology for Young Scientists, IWYS 2016 - Selangor, Malaysia
Duration: 28 Nov 201630 Nov 2016

Other

Other1st UKM-ISESCO-COMSATS International Workshop on Nanotechnology for Young Scientists, IWYS 2016
CountryMalaysia
CitySelangor
Period28/11/1630/11/16

Fingerprint

electromagnetic absorption
solar cells
etching
wafers
damage
submerging
masks
textures
electron microscopes
trapping
silver
atomic force microscopy
aqueous solutions
broadband
nanoparticles
scanning
metals

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Nasir, N. S. M., Sinin, N. A. M., Sepeai, S., Leong, C. S., Sopian, K., & Zaidi, S. H. (2017). Investigation near IR absorption in thin crystalline Si wafers with randomly etched nano-pillars. In 1st UKM-ISESCO-COMSATS International Workshop on Nanotechnology for Young Scientists, IWYS 2016 (Vol. 1838). [020005] American Institute of Physics Inc.. https://doi.org/10.1063/1.4982177

Investigation near IR absorption in thin crystalline Si wafers with randomly etched nano-pillars. / Nasir, Nurfarizza Surhada Mohd; Sinin, Nurul Aqidah Mohd; Sepeai, Suhaila; Leong, Cheow Siu; Sopian, Kamaruzzaman; Zaidi, Saleem H.

1st UKM-ISESCO-COMSATS International Workshop on Nanotechnology for Young Scientists, IWYS 2016. Vol. 1838 American Institute of Physics Inc., 2017. 020005.

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

Nasir, NSM, Sinin, NAM, Sepeai, S, Leong, CS, Sopian, K & Zaidi, SH 2017, Investigation near IR absorption in thin crystalline Si wafers with randomly etched nano-pillars. in 1st UKM-ISESCO-COMSATS International Workshop on Nanotechnology for Young Scientists, IWYS 2016. vol. 1838, 020005, American Institute of Physics Inc., 1st UKM-ISESCO-COMSATS International Workshop on Nanotechnology for Young Scientists, IWYS 2016, Selangor, Malaysia, 28/11/16. https://doi.org/10.1063/1.4982177
Nasir NSM, Sinin NAM, Sepeai S, Leong CS, Sopian K, Zaidi SH. Investigation near IR absorption in thin crystalline Si wafers with randomly etched nano-pillars. In 1st UKM-ISESCO-COMSATS International Workshop on Nanotechnology for Young Scientists, IWYS 2016. Vol. 1838. American Institute of Physics Inc. 2017. 020005 https://doi.org/10.1063/1.4982177
Nasir, Nurfarizza Surhada Mohd ; Sinin, Nurul Aqidah Mohd ; Sepeai, Suhaila ; Leong, Cheow Siu ; Sopian, Kamaruzzaman ; Zaidi, Saleem H. / Investigation near IR absorption in thin crystalline Si wafers with randomly etched nano-pillars. 1st UKM-ISESCO-COMSATS International Workshop on Nanotechnology for Young Scientists, IWYS 2016. Vol. 1838 American Institute of Physics Inc., 2017.
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