UV-Vis-NIR Photodetector Produced Using Lavandula angustifolia Extract: A Green Approach
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Keywords:
Supercritical CO₂ Extraction, Schottky Photodiode, Lavandula angustifolia, PhotodetectorAbstract
In this study, the usability of Lavandula angustifolia (lavender), a natural plant extract, as an
active material in the production of photodetectors was investigated. An environmentally friendly and
self-powered photodetector capable of broad-band detection in the UV-Vis-NIR (ultraviolet-visible-near
infrared) spectral range was successfully produced with a simple and low-cost method. The basic
performance parameters of the photodetector, namely photosensitivity (Iph), photosensitivity (K),
responsivity (R) and specific detectability (D*), were investigated in detail at different wavelengths. The
obtained data show that the device exhibits high performance especially in the range of 351–1000 nm and
reaches maximum values at 1000 nm (Iph=1.58×10−5 A, R=0.1 A/W, D*=1.82×1010 Jones). Significant
decreases were observed in these parameters at wavelengths above 1000 nm. These results demonstrate
that lavender extract-based natural material offers a promising photodetector platform for applications
from UV to near-infrared.
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