Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Pyrene-functionalized tungsten disulfide as stable resistive photosensor
Δημιουργός/Συγγραφέας:	Canton-Vitoria, Ruben Nufer, Sebastian Che, Xiaoyang Sayed-Ahmad-Baraza, Yuman Arenal, Raul Bittencourt, Carla Brunton, Adam Dalton, Alan B. Ewels, Christopher P. [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos
Εκδότης:	Royal Society of Chemistry
Ημερομηνία:	2020
Γλώσσα:	Αγγλικά
ISSN:	2633-5409
DOI:	10.1039/D0MA00429D
Περίληψη:	Pyrene carrying an 1,2-dithiolane linker was employed to functionalize exfoliated WS2 and the resulting material was used in a proof-of-concept application as a photoresistor type sensor. The WS2–pyrene hybrid material was comprehensively characterized by spectroscopic, thermal and microscopy techniques, coupled to density functional theory modelling. The high solubility of the WS2–pyrene hybrid material allows easy manipulation in wet media, making it suitable for device fabrication. Thus, a two-terminal resistive photosensor was developed and tested for photodetection. The photosensitivity of WS2 was improved by the presence of covalently attached pyrene by a factor of 2–3, the response linearly dependent on light intensity. Device reaction time was also improved, and critically the photosensor stability was significantly enhanced. Functionalization of exfoliated WS2 material heals vacancies, oxidation and other damage sites liable to impede photoelectric response. This proof-of-concept study opens the way for incorporation of diverse chromophores active in the visible and/or NIR region of the electromagnetic spectrum to WS2 in order to stabilise it and broaden its photoresistive sensing applicability.
Τίτλος πηγής δημοσίευσης:	Materials Advances
Τόμος/Κεφάλαιο:	1
Τεύχος:	7
Σελίδες:	2459-2466
Θεματική Κατηγορία:	[EL] Τεχνολογικές καινοτομίες. Αυτοματοποίηση[EN] Technological innovations. Automation [EL] Φασματοσκοπία[EN] Spectroscopy [EL] Εφαρμοσμένη οπτική. Φωτονική[EN] Applied optics. Photonics [EL] Χημεία (Γενικά)[EN] Chemistry (General)
Λέξεις-Κλειδιά:	Material science WS2 - Pyrene hybrid material Photosensor
Κάτοχος πνευματικών δικαιωμάτων:	Copyright © 2020 The Royal Society of Chemistry
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://pubs.rsc.org/en/content/articlelanding/2020/MA/D0MA00429D
Ηλεκτρονική διεύθυνση περιοδικού (link) :	https://pubs.rsc.org/en/journals/journalissues/ma#!recentarticles&adv
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο