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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| Format: | Thesis |
| Language: | English |
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2022
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| Online Access: | http://eprints.usm.my/59507/ http://eprints.usm.my/59507/1/24%20Pages%20from%20AUWAL%20ABDULKADIR.pdf |
| _version_ | 1848884190343331840 |
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| author | Abdulkadir, Auwal |
| author_facet | Abdulkadir, Auwal |
| author_sort | Abdulkadir, Auwal |
| building | USM Institutional Repository |
| collection | Online Access |
| description | 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%. |
| first_indexed | 2025-11-15T19:02:46Z |
| format | Thesis |
| id | usm-59507 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T19:02:46Z |
| publishDate | 2022 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-595072023-10-19T02:09:00Z http://eprints.usm.my/59507/ Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells 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 NonPeerReviewed application/pdf en http://eprints.usm.my/59507/1/24%20Pages%20from%20AUWAL%20ABDULKADIR.pdf Abdulkadir, Auwal (2022) Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells. PhD thesis, Perpustakaan Hamzah Sendut. |
| spellingShingle | QC1 Physics (General) Abdulkadir, Auwal Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells |
| title | 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_short | Fabrication And Characterization Of Black Silicon For Heterojunction Solar Cells |
| title_sort | fabrication and characterization of black silicon for heterojunction solar cells |
| topic | QC1 Physics (General) |
| url | http://eprints.usm.my/59507/ http://eprints.usm.my/59507/1/24%20Pages%20from%20AUWAL%20ABDULKADIR.pdf |