The Journal of Physical Chemistry Letters· 2018Q1
How To Correctly Determine the Band Gap Energy of Modified Semiconductor Photocatalysts Based on UV–Vis Spectra
- 4,908citations
- Q1SCImago
- 2018year
Short summary
This viewpoint clarifies that the band gap energy of modified semiconductor photocatalysts should be determined using the Tauc-plot method, specifically by extrapolating the linear part of the plot to the energy axis, not by using the onset of absorption.
AI-generated from the title and abstract; the full text is not read.
Key points
- The Tauc-plot method is the standard and correct way to determine the band gap energy of semiconductor photocatalysts from UV-Vis spectra.
- The band gap is found by extrapolating the linear portion of the $(\alpha h\nu)^{1/2}$ vs $h\nu$ plot to the energy axis.
- Using the onset of absorption as the band gap energy is inaccurate and misleading, particularly for modified semiconductors.
- Correct band gap determination is crucial for understanding and optimizing photocatalytic activity.
AI-generated from the title and abstract; the full text is not read.
Abstract
ADVERTISEMENT RETURN TO ISSUEPREVViewpointNEXTHow To Correctly Determine the Band Gap Energy of Modified Semiconductor Photocatalysts Based on UV–Vis SpectraPatrycja MakułaPatrycja MakułaFaculty of Chemistry, Jagiellonian University in Kraków, ul. Gronostajowa 2, 30-387 Kraków, PolandMore by Patrycja Makuła, Michał PaciaMichał PaciaFaculty of Chemistry, Jagiellonian University in Kraków, ul. Gronostajowa 2, 30-387 Kraków, PolandMore by Michał Pacia, and Wojciech Macyk*Wojciech MacykFaculty of Chemistry, Jagiellonian University in Kraków, ul. Gronostajowa 2, 30-387 Kraków, Poland*W. Macyk. E-mail: [email protected]More by Wojciech Macykhttp://orcid.org/0000-0002-1317-6115Cite this: J. Phys. Chem. Lett. 2018, 9, 23, 6814–6817Publication Date (Web):December 6, 2018Publication History Published online6 December 2018Published inissue 6 December 2018https://pubs.acs.org/doi/10.1021/acs.jpclett.8b02892https://doi.org/10.1021/acs.jpclett.8b02892editorialACS PublicationsCopyright © 2018 American Chemical Society. This publication is available under these Terms of Use. Request reuse permissions This publication is free to access through this site. Learn MoreArticle Views234144Altmetric-Citations2208LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail PDF (775 KB) Get e-AlertscloseSupporting Info (2)»Supporting Information Supporting Information SUBJECTS:Absorption,Electrical conductivity,Energy,Oxides,Semiconductors Get e-Alerts
The authors' abstract, as published at the source. The Journal of Physical Chemistry Letters, 2018 · DOI ↗
Continue with a free account
Ask the paper: 3 free questions a day about this paper; save it, get its citation, new summaries every day for your field. Takeaways are Premium.
Continue free on the webSign in with Google or Apple; no card needed. You come back to this paper.
On your phone:
Field: Electrical and Electronic Engineering
Electrical and Electronic EngineeringEngineering