Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Wavelength‐Selective, High‐Speed, Self‐Powered Isotype Heterojunction n+‐ZnO/n‐Si Photodetector with Engineered and Tunable Spectral Response
Δημιουργός/Συγγραφέας:	Tsanakas, Michael D. Jaros, Angelina Fleming, Yves Efthimiadou, Metamorfi Voss, Tobias Leturcq, Renaud Gardelis, Spiros [EL] Κάνδυλα, Μαρία[EN] Kandyla, Maria
Ημερομηνία:	2025
Γλώσσα:	Αγγλικά
ISSN:	2365-709X 2365-709X
DOI:	10.1002/admt.202401740
Περίληψη:	An isotype heterojunction n+-ZnO/n-Si photodetector is developed, showing adjustable wavelength-selective operation at self-powered conditions. Without an external bias voltage, the device can operate either as a broadband UV–vis–NIR or as a NIR-only photodetector, depending on the relative carrier concentrations of ZnO and silicon. In addition, the photodetector can be tuned to either broadband or NIR operation by the application of an external bias voltage, regardless of carrier concentrations. At negative bias, it demonstrates UV–vis–NIR photodetection, while at positive bias, NIR photodetection. Photovoltage and photocurrent measurements for pulsed illumination reveal a high-speed self-powered response, with rise and fall times <100 µs across the UV–vis–NIR. The device can be engineered to reproduce undistorted pulsed light with frequencies as high as 1 kHz. Self-powered responsivity reaches ≈70 mA W−1, which becomes ≈4 A W−1 with an applied external bias.
Τίτλος πηγής δημοσίευσης:	Advanced Materials Technologies
Τόμος/Κεφάλαιο:	10
Τεύχος:	10
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Οπτική. Φώς[EN] Optics. Light [EL] Φασματοσκοπία[EN] Spectroscopy
Λέξεις-Κλειδιά:	high speed isotype heterojunction self-powered silicon tunable responsivity wavelength selective photodetector ZnO
Χρηματοδότης:	European Union – NextGenerationEU
Αναγνωριστικό χρηματοδοτικού προγράμματος:	TAEDR-0537347
Κάτοχος πνευματικών δικαιωμάτων:	© 2025 The Author(s). Advanced Materials Technologies published by Wiley-VCH GmbH
Όροι και προϋποθέσεις δικαιωμάτων:	This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.1002/admt.202401740
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο