Comment about the use of unconventional Tauc plots for bandgap energy determination of semiconductors using UV–Vis spectroscopy
The Tauc method is the conventional technique for estimating the accurate optical bandgap energy of semiconductors using UV–Vis spectroscopy. The proper bandgap is usually determined by directly extrapolating the linear region of the optical spectrum to the horizontal axis of the Tauc plot αhv1/r vs...
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Elsevier
2024-02-01
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| Series: | Results in Optics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666950124000038 |
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| author | Peverga R. Jubu E. Danladi U.I. Ndeze O. Adedokun S. Landi, Jr. A.J. Haider A.T. Adepoju Y. Yusof O.S. Obaseki F.K. Yam |
| author_facet | Peverga R. Jubu E. Danladi U.I. Ndeze O. Adedokun S. Landi, Jr. A.J. Haider A.T. Adepoju Y. Yusof O.S. Obaseki F.K. Yam |
| author_sort | Peverga R. Jubu |
| collection | DOAJ |
| description | The Tauc method is the conventional technique for estimating the accurate optical bandgap energy of semiconductors using UV–Vis spectroscopy. The proper bandgap is usually determined by directly extrapolating the linear region of the optical spectrum to the horizontal axis of the Tauc plot αhv1/r vs. hv. However, the use of unconventional Tauc plots, such as α1/r vs. hv, A1/r vs. hv, and FR∞ vs. hv are also found in the literature. This raises a debate as to whether these nontraditional methods can produce the correct bandgap value. These uncommon methods appear frequently even in recent papers published in reputable journals, and therefore, have raised concern to investigate the likelihood of obtaining the correct bandgap value using the unusual methods. Results showed that the plots of α1/r vs. hv, and A1/r vs. hv yielded bandgap values that were consistent with those deduced from the universal Tauc plot, whereas the other methods failed. |
| first_indexed | 2024-03-08T00:47:47Z |
| format | Article |
| id | doaj.art-2d85fb19a22b4ac1b3a122ec5a0f3bee |
| institution | Directory Open Access Journal |
| issn | 2666-9501 |
| language | English |
| last_indexed | 2024-03-08T00:47:47Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Optics |
| spelling | doaj.art-2d85fb19a22b4ac1b3a122ec5a0f3bee2024-02-15T05:26:10ZengElsevierResults in Optics2666-95012024-02-0114100606Comment about the use of unconventional Tauc plots for bandgap energy determination of semiconductors using UV–Vis spectroscopyPeverga R. Jubu0E. Danladi1U.I. Ndeze2O. Adedokun3S. Landi, Jr.4A.J. Haider5A.T. Adepoju6Y. Yusof7O.S. Obaseki8F.K. Yam9Department of Physics, Joseph Sarwuan Tarka University Makurdi (Federal University of Agriculture Makurdi), P.M.B. 2373, Makurdi, Benue State, Nigeria; School of Physics, Universiti Sains Malaysia (USM), 11800 Penang, Malaysia; Corresponding authors at: Department of Physics, Joseph Sarwuan Tarka University Makurdi (Federal University of Agriculture Makurdi), P.M.B. 2373, Makurdi, Benue State, Nigeria (P.R. Jubu).Department of Physics, Federal University of Health Sciences Otukpo, Benue State, NigeriaDepartment of Pure and Applied Physics, Federal University Wukari, Taraba State, NigeriaDepartment of Pure and Applied Physics, Ladoke Akintola University of Technology, P. M. B. 4000, Ogbomoso, Oyo State, NigeriaFederal Institute Goiano, Rio Verde, Goiás 75901-970, BrazilApplied Sciences Department, University of Technology, Baghdad, IraqDepartment of Physics, Joseph Sarwuan Tarka University Makurdi (Federal University of Agriculture Makurdi), P.M.B. 2373, Makurdi, Benue State, NigeriaSchool of Physics, Universiti Sains Malaysia (USM), 11800 Penang, MalaysiaSchool of Physics, Universiti Sains Malaysia (USM), 11800 Penang, MalaysiaSchool of Physics, Universiti Sains Malaysia (USM), 11800 Penang, Malaysia; Corresponding authors at: Department of Physics, Joseph Sarwuan Tarka University Makurdi (Federal University of Agriculture Makurdi), P.M.B. 2373, Makurdi, Benue State, Nigeria (P.R. Jubu).The Tauc method is the conventional technique for estimating the accurate optical bandgap energy of semiconductors using UV–Vis spectroscopy. The proper bandgap is usually determined by directly extrapolating the linear region of the optical spectrum to the horizontal axis of the Tauc plot αhv1/r vs. hv. However, the use of unconventional Tauc plots, such as α1/r vs. hv, A1/r vs. hv, and FR∞ vs. hv are also found in the literature. This raises a debate as to whether these nontraditional methods can produce the correct bandgap value. These uncommon methods appear frequently even in recent papers published in reputable journals, and therefore, have raised concern to investigate the likelihood of obtaining the correct bandgap value using the unusual methods. Results showed that the plots of α1/r vs. hv, and A1/r vs. hv yielded bandgap values that were consistent with those deduced from the universal Tauc plot, whereas the other methods failed.http://www.sciencedirect.com/science/article/pii/S2666950124000038Tauc plotBandgapSemiconductorExtrapolation |
| spellingShingle | Peverga R. Jubu E. Danladi U.I. Ndeze O. Adedokun S. Landi, Jr. A.J. Haider A.T. Adepoju Y. Yusof O.S. Obaseki F.K. Yam Comment about the use of unconventional Tauc plots for bandgap energy determination of semiconductors using UV–Vis spectroscopy Results in Optics Tauc plot Bandgap Semiconductor Extrapolation |
| title | Comment about the use of unconventional Tauc plots for bandgap energy determination of semiconductors using UV–Vis spectroscopy |
| title_full | Comment about the use of unconventional Tauc plots for bandgap energy determination of semiconductors using UV–Vis spectroscopy |
| title_fullStr | Comment about the use of unconventional Tauc plots for bandgap energy determination of semiconductors using UV–Vis spectroscopy |
| title_full_unstemmed | Comment about the use of unconventional Tauc plots for bandgap energy determination of semiconductors using UV–Vis spectroscopy |
| title_short | Comment about the use of unconventional Tauc plots for bandgap energy determination of semiconductors using UV–Vis spectroscopy |
| title_sort | comment about the use of unconventional tauc plots for bandgap energy determination of semiconductors using uv vis spectroscopy |
| topic | Tauc plot Bandgap Semiconductor Extrapolation |
| url | http://www.sciencedirect.com/science/article/pii/S2666950124000038 |
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