Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Polycrystalline formamidinium lead bromide (FAPbBr3) perovskite as a self-powered and fast visible-light photodetector
Δημιουργός/Συγγραφέας:	Anastasopoulos, Andreas [EL] Καλτζόγλου, Ανδρέας[EN] Kaltzoglou, Andreas Sinani, Alexandra Christopoulos, Eleftherios Koralli, Panagiota Psycharis, Vassilis Falaras, Polycarpos [EL] Ριζιώτης, Χρήστος Δ.[EN] Riziotis, Christos [EL] Κάνδυλα, Μαρία[EN] Kandyla, Maria
Ημερομηνία:	2023
Γλώσσα:	Αγγλικά
ISSN:	01679317
DOI:	10.1016/j.mee.2023.111960
Περίληψη:	Halide perovskite compounds have become a major research topic in the semiconductor field due to a variety of optoelectronic applications and their advantage of low-cost and simple processing methods, combined with tunable properties. The current work presents the use of (NH2)2CHPbBr3 (FAPbBr3), with a direct band gap of 2.17 eV, as a robust visible-light detector. The polycrystalline material was prepared by fusion of the precursor compounds PbBr2 and (NH2)2CHBr in solid state. It was then pressed in the form of a pellet and two transparent fluorine-doped tin oxide glasses were attached on both sides. The photodetector selectively responds to photon energies exceeding its band gap even without external bias, operating in an energy-efficient, self-powered mode. The response times to pulsed light are orders of magnitude shorter than these of previously reported FAPbBr3-based detectors. Electrochemical impedance spectroscopy determined in depth the electrical characteristics of the semiconducting perovskite with and without illumination. These results provide evidence that polycrystalline FAPbBr3, obtained with low-cost and simple synthetic methods compared to other forms, can be an excellent candidate for fast and self-powered optoelectronics, useful for Visible Light Communication (VLC) and Internet of Things (IoT) systems.
Τίτλος πηγής δημοσίευσης:	Microelectronic Engineering
Τόμος/Κεφάλαιο:	273
Θεματική Κατηγορία:	[EL] Φασματοσκοπία[EN] Spectroscopy [EL] Χημική μηχανική[EN] Chemical engineering
Λέξεις-Κλειδιά:	photodetectors organic-inorganic halide perovskites polycrystalline FAPbBr3 self-powered and high-speed electrochemical impedance spectroscopy
EU Grant:	First Call for H.F.R.I. Research Projects to support Faculty members and Researchers and the procurement of high-cost research equipment grant
EU Grant identifier:	HFRI-FM17-640
Κάτοχος πνευματικών δικαιωμάτων:	© 2023 Elsevier B.V. All rights reserved.
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.1016/j.mee.2023.111960
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο