Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells
Black silicon (b-Si) is a promising technology that reduces broadband reflection within 300-1100 nm wavelength region and improves light absorption in crystalline silicon (c-Si). B-Si consists of a surface with random nanowires or a combination of nanowires and microtextures (hybrid textures) which...
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my-usm-ep.595072023-10-19T02:09:00Z Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells 2022-01 Abdulkadir, Auwal QC1 Physics (General) Black silicon (b-Si) is a promising technology that reduces broadband reflection within 300-1100 nm wavelength region and improves light absorption in crystalline silicon (c-Si). B-Si consists of a surface with random nanowires or a combination of nanowires and microtextures (hybrid textures) which leads to a refractive index grading effect at the air/c-Si interface. In this work, electroless metal-assisted chemical etching (MACE) is used to fabricate b-Si. One-step MACE, two-step MACE and hybrid microtextures/nanotextures investigating different effects such as etching time, etchants concentration, silver nanoparticles (Ag NPs) layer thickness towards surface morphological and optical properties (within 300-1100 nm wavelength region) of the b-Si are carried out. Two step MACE involve shorter AgNO3:HF dip time. The hybrid texturing involves prior etching in NaOH to produce pyramids. For one-step MACE, nanowires with an average length of ~2.9 μm and an average diameter of ~120 nm are demonstrated. Weighted average reflection (WAR) of 6.0% has been realized. For two-step MACE, nanowires with an average length of 577 nm and diameter of ~200 nm are produced with WAR of ~5.5%. 2022-01 Thesis http://eprints.usm.my/59507/ http://eprints.usm.my/59507/1/24%20Pages%20from%20AUWAL%20ABDULKADIR.pdf application/pdf en public phd doctoral Perpustakaan Hamzah Sendut Pusat Pengajian Sains Fizik |
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QC1 Physics (General) Abdulkadir, Auwal Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells |
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Black silicon (b-Si) is a promising technology that reduces broadband reflection within 300-1100 nm wavelength region and improves light absorption in crystalline silicon (c-Si). B-Si consists of a surface with random nanowires or a combination of nanowires and microtextures (hybrid textures) which leads to a refractive index grading effect at the air/c-Si interface. In this work, electroless metal-assisted chemical etching (MACE) is used to fabricate b-Si. One-step MACE, two-step MACE and hybrid microtextures/nanotextures investigating different effects such as etching time, etchants concentration, silver nanoparticles (Ag NPs) layer thickness towards surface morphological and optical properties (within 300-1100 nm wavelength region) of the b-Si are carried out. Two step MACE involve shorter AgNO3:HF dip time. The hybrid texturing involves prior etching in NaOH to produce pyramids. For one-step MACE, nanowires with an average length of ~2.9 μm and an average diameter of ~120 nm are demonstrated. Weighted average reflection (WAR) of 6.0% has been realized. For two-step MACE, nanowires with an average length of 577 nm and diameter of ~200 nm are produced with WAR of ~5.5%. |
format |
Thesis |
qualification_name |
Doctor of Philosophy (PhD.) |
qualification_level |
Doctorate |
author |
Abdulkadir, Auwal |
author_facet |
Abdulkadir, Auwal |
author_sort |
Abdulkadir, Auwal |
title |
Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells |
title_short |
Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells |
title_full |
Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells |
title_fullStr |
Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells |
title_full_unstemmed |
Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells |
title_sort |
fabrication and characterization of black silicon for heterojunction solar cells |
granting_institution |
Perpustakaan Hamzah Sendut |
granting_department |
Pusat Pengajian Sains Fizik |
publishDate |
2022 |
url |
http://eprints.usm.my/59507/1/24%20Pages%20from%20AUWAL%20ABDULKADIR.pdf |
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1783729568989839360 |