Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Nanogenerators Begin to Light Up: A Novel Poling-Free Piezoelectric System with Multicolor Photoluminescence as an Efficient Mechatronics Development Platform
Δημιουργός/Συγγραφέας:	Ma S. Jin L. Huang X. [EL] Ριζιώτης, Χρήστος Δ.[EN] Riziotis, Christos Huang R. Zhang C. Lu J. Yang W.
Εκδότης:	Wiley-VCH Verlag
Ημερομηνία:	2018
Γλώσσα:	Αγγλικά
ISSN:	2196-7350
DOI:	10.1002/admi.201800587
Περίληψη:	In this work, a novel design of poly (vinylidene fluoride)/carbon quantum dots (PVDF/CQDs) based flexible poling-free hybrid material system able to efficiently convert small amounts of mechanical energy into electricity through the intrinsic piezoelectric nanostructures is reported. The PVDF/CQDs composite is fabricated through solution casting followed by a high-pressure crystallization process. The introduction of 3D quasi-spherical CQDs has in situ induced the self-assembly of polymorphic substructures in the PVDF crystallites at high pressure, and piezoelectric 3D nanosheet arrays, 1D nanometer small sticks, and 1D nanowires, respectively, are formed in situ with the increase of CQDs concentration. Without any electrical polarization treatment, the maximum open-circuit voltage output density of the durable composite system reaches 19.2 V cm−2 and short-circuit current output density of 550 nA cm−2, both far exceeding that of pure PVDF. Simultaneously, owing to the successful incorporation of CQDs, the material shows excellent fluorescent effect with high stability, and its multicolor photoluminescence is well retained even after the endurance for a rigorous treatment at high pressure and high temperature. The as-developed environmental friendly PVDF/CQDs compound may diversify niche applications in a new-generation of self-powered autonomous optoelectronic devices, biosensors, cell imaging, and so on.
Τίτλος πηγής δημοσίευσης:	Advanced Materials Interfaces
Τόμος/Κεφάλαιο:	5
Τεύχος:	19
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	composite materials electro-optical materials flexible electronics luminescence quantum dots
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Σημειώσεις:	2015JQ0013; Sichuan Province Science and Technology Support Program: 2018JY0166; National Natural Science Foundation of China, NSFC: 51373139; Sichuan University, SCU S.M. and L.J. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (No. 51373139), Sichuan Science and Technology Program (No. 2018JY0166), and Technological Projects for Distinguished Young Scholars of Sichuan Province (No.2015JQ0013). The authors extended their gratitude to Professor Yajiang Huang (Sichuan University) for valuable discussions and Dr. Fengjun Chun (Southwest Jiaotong Univeristy) for helps in performing the PL tests.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο