Harnessing TiO2-Based Nanofilaments: A Pathway to Enhanced Optoelectronic Performance in Dye-Sensitized and Perovskite Light Harvesters

Authors

• Zahraa Ismail, The British University in EgyptFollow
• Tarek A. Elmelegy, The British University in EgyptFollow
• Hassan Nageh, The British University in EgyptFollow
• Sameh Abdellatif, The British University in EgyptFollow

Document Type

Article

Publication Date

7-2026

Abstract

This study explores the integration of TiO2-based nanofilaments into dye-sensitized solar cells (DSSCs) and perovskite solar cells (PSCs) to enhance their optoelectronic performance. Despite the advancements in one-dimensional lepidocrocite TiO2 nanofilaments, there remains a significant gap in understanding their optical scattering mechanisms and dual applicability in both types of solar cells. We synthesized TiO2 nanofilaments and compared their performance to conventional P25 TiO2 in terms of morphology, electrical, and optical properties. The results indicate that the DSSC utilizing nanofilaments achieved a short-circuit current density of 8.2 mA/cm² and a power conversion efficiency (PCE) of 6.9%, compared to 7.1 mA/cm² and 5.1% for the bare P25 cell. Similarly, the PSCs exhibited a short-circuit current density increase from 16.0 mA/cm² to 19.7 mA/cm² and a PCE improvement from 11.3% to 13.4% when employing nanofilament TiO2. These enhancements are attributed to superior charge transport properties, increased surface area for dye adsorption, and enhanced forward optical scattering, which collectively improve light harvesting and charge collection efficiency.

Recommended Citation

Z. Ismail, T. A. Elmelegy, H. Nageh, and S. Abdellatif, "Harnessing TiO2-Based Nanofilaments: A Pathway to Enhanced Optoelectronic Performance in Dye-Sensitized and Perovskite Light Harvesters," IEEE Journal of Selected Topics in Quantum Electronics, 2026. DOI: 10.1109/JSTQE.2026.3715090.