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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Catalyzing the Affordability of Perovskite Solar Cells with Aluminum-Modified Cubic Titania
Subject
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electron transport material; electron traps; nanocube; nanosphere; oxygen vacancy; Perovskite solar cell; TiO<sub>2</sub>
Description
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As a key component of perovskite solar cells (PSCs), the electron transport layer (ETL) extracts charges efficiently. While TiO2 is widely recognized as a superior electron transport material (ETM) for its numerous advantages, the morphological limitations of spherical TiO2 nanoparticles (NPs) lead to significant electron losses. Therefore, as an alternative to nanospheres, TiO2 nanocubes are synthesized through a solvothermal route and employed as ETM in the low-cost carbon electrode-based perovskite solar cells (CPSCs). The structural, morphological, and optical properties of the TiO2 nanocubes (NCs) are studied and compared with TiO2 nanospheres (NSs) in detail. The device possessing cubic TiO2 achieved a power conversion efficiency (PCE) of 10.6% with a current density (Jsc) of 21.79 mA/cm2. Recognizing that the oxygen vacancies in cubic TiO2 are lower than in spherical TiO2, it is inferred that further reduction of oxygen vacancies in cubic TiO2 could enhance the current collection. Hence, to get rid of the oxygen vacancy (which acts as an electron trap) in the cubical TiO2, aluminum (Al3+) is incorporated into its matrix. A comprehensive analysis of its impact on structural and optical behavior follows. In addition to its cost-effectiveness and conductive nature, it has been observed that the stable form of Al3+ replaces the unstable Ti3+ (which acts as a trap state), thereby reducing the recombination rate. With the highest current collection of 22.85 mA/cm2, a PCE of 11.3% has been recorded for the solar cell that possessed 1% Al-doped TNC. Furthermore, the ambient stability of the respective device shows ?85% of its initial PCE. The effect of the TiO2 nanostructure and Al3+ doping in TiO2 nanocubes is discussed elaborately in this work. 2024 American Chemical Society
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Kunka Ravindran A.; Narendhiran S.; Nambiraj B.; Muthusamy Anandan G.L.; Muthu S.P.; Perumalsamy R.
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ACS Applied Optical Materials, Vol-2, No. 1, pp. 230-243.
Publisher
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American Chemical Society
Date
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2024-01-01
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<a href="https://doi.org/10.1021/acsaom.3c00410" target="_blank" rel="noreferrer noopener">https://doi.org/10.1021/acsaom.3c00410</a>
<br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85186075826&doi=10.1021%2Facsaom.3c00410&partnerID=40&md5=b6344f8f7f1d187d19b6a76c8bda8e34" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85186075826&doi=10.1021%2facsaom.3c00410&partnerID=40&md5=b6344f8f7f1d187d19b6a76c8bda8e34</a>
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Restricted Access
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ISSN: 27719855
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Online
Language
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English
Type
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Article
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Kunka Ravindran A., Research Centre, Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Tamil Nadu, Chennai, 603110, India; Narendhiran S., Department of Physics and Electronics, Christ (Deemed to be University), Karnataka, Bengaluru, 560029, India; Nambiraj B., Research Centre, Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Tamil Nadu, Chennai, 603110, India; Muthusamy Anandan G.L., Department of Chemistry, Sri Sivasubramaniya Nadar College of Engineering, Tamil Nadu, Chennai, 603110, India; Muthu S.P., Research Centre, Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Tamil Nadu, Chennai, 603110, India; Perumalsamy R., Research Centre, Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Tamil Nadu, Chennai, 603110, India