Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Enhanced sub-1 eV detection in organic photodetectors through tuning polymer energetics and microstructure
Δημιουργός/Συγγραφέας:	Jacoutot, Polina Scaccabarozzi, Alberto D Nodari, Davide Panidi, Julianna Qiao, Zhuoran Schiza, Andriana Nega, Alkmini D Dimitrakopoulou-Strauss, Antonia [EL] Γρηγορίου, Βασίλης Γ.[EN] Gregoriou, Vasilis G. Heeney, Martin [EL] Χώχος, Χρήστος[EN] Chochos, Christos Bakulin, Artem A Gasparini, Nicola
Εκδότης:	Science Advances
Ημερομηνία:	2023-06-07
Γλώσσα:	Αγγλικά
ISSN:	2375-2548
DOI:	10.1126/sciadv.adh2694
Άλλο:	37285428
Περίληψη:	One of the key challenges facing organic photodiodes (OPDs) is increasing the detection into the infrared region. Organic semiconductor polymers provide a platform for tuning the bandgap and optoelectronic response to go beyond the traditional 1000-nanometer benchmark. In this work, we present a near-infrared (NIR) polymer with absorption up to 1500 nanometers. The polymer-based OPD delivers a high specific detectivity D* of 1.03 × 1010 Jones (-2 volts) at 1200 nanometers and a dark current Jd of just 2.3 × 10-6 ampere per square centimeter at -2 volts. We demonstrate a strong improvement of all OPD metrics in the NIR region compared to previously reported NIR OPD due to the enhanced crystallinity and optimized energy alignment, which leads to reduced charge recombination. The high D* value in the 1100-to-1300-nanometer region is particularly promising for biosensing applications. We demonstrate the OPD as a pulse oximeter under NIR illumination, delivering heart rate and blood oxygen saturation readings in real time without signal amplification.
Τίτλος πηγής δημοσίευσης:	Science advances
Τόμος/Κεφάλαιο:	9
Τεύχος:	23
Θεματική Κατηγορία:	[EL] Χημική τεχνολογία[EN] Chemical technolgy [EL] Ηλεκτρική μηχανική. Ηλεκτρονική. Πυρινική μηχανικη[EN] Electrical engineering. Electronics. Nuclear engineering [EL] Οργανική χημεία[EN] Organic chemistry
Λέξεις-Κλειδιά:	Organic semiconductors Crystals Energy
EU Grant:	Royal Society
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10246890/pdf/sciadv.adh2694.pdf
Εμφανίζεται στις συλλογές:	Ινστιτούτο Χημικής Βιολογίας - Επιστημονικό έργο