Enhancing Photoresponse Performance of Organic Self-Powered UV-Vis-NIR Photodetectors Using Curcuma Longa Extract
Abstract
Recent advancements in optoelectronics highlight the potential of abundantly available plants as promising, eco-friendly semiconductor materials, offering tunable properties, flexible processing, and compatibility with low-cost, sustainable fabrication techniques. In this study, we obtained the extract of Curcuma longa using the supercritical CO₂ extraction method, which offers high efficiency while being environmentally friendly, solvent-free, and preserving heat-sensitive bioactive compounds. Thereafter, we employed Curcuma longa extract as interlayer to fabricated Schottky photodetectors. Curcuma longa thin films were characterized by X-ray diffraction, ultraviolet–visible spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. The extract has shown a wide optical band gap of 2.94 eV, making it a significant candidate for optoelectronic applications. Curcuma longa extract-based device has shown excellent photoresponse performance against solar light and wavelengths ranging from 351 to 1600 nm. The device exhibits high responsivity and external quantum efficiency (EQE) in the visible range (400–700 nm), with peak values at 500 nm (0.01567 A/W, 3.885% EQE) and 600 nm (0.01387 A/W, 2.866% EQE), while maintaining measurable but declining performance into the near-infrared (up to 1600 nm). Its broadband photodetection capability is further supported by low noise-equivalent power and high detectivity in the visible spectrum, though both degrade gradually beyond 800 nm, reflecting typical semiconductor behavior with optimal sensitivity at 500–600 nm. The findings highlighted the potential of a Curcuma longa -based interlayer device for self-powered UV-Vis-NIR photodetector applications.
Keywords
References
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Details
Primary Language
English
Subjects
Material Physics
Journal Section
Research Article
Authors
Mujeeb Ullah Chaudhry
0000-0002-6149-3457
United Kingdom
Murat Yıldırım
*
0000-0002-4541-3752
Türkiye
Publication Date
May 12, 2026
Submission Date
March 31, 2026
Acceptance Date
April 20, 2026
Published in Issue
Year 2026 Volume: 52 Number: 1