ArticleHeliyon2025
Fabrication and performance analysis of ZnO/Ge/porous Si photodetectors for near-infrared detection.
Article in Heliyon, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This paper reports on the fabrication of zinc oxide (ZnO)/germanium nanoparticles (Ge NPs)/porous silicon (PSi) photodetector for near-infrared (NIR) detection. Ge NPs are synthesized via pulsed laser ablation in liquid (PLAL) followed by spray coating onto the porous Si substrate and subsequent deposition of a ZnO layer. Field emission scanning electron microscopy (FESEM) confirms the presence of Ge NPs, along with the formation of Ge microwires and a mesh-like Ge pattern on the porous Si surface, attributed to Ge NP supersaturation during spray coating. Ge NPs act as a source of photogenerated electrons, transferring them to the ZnO layer. Additionally, the Ge microwire network facilitates barrier-dominated conduction, further contributing to the generation and transfer of photogenerated electrons. The device achieves its best performance at a bias voltage of 6 V under illumination with 805 nm light, a light intensity of 1.44 mW cm
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