White-light-emitting flexible display devices based on double network hydrogels crosslinked by YAG:Ce phosphors

Autor:	Afang Zhang, Hua Zhang, Linjie Zhou, Jun Fu, Hua Wei, Jing Chen, Yuexiao Pan, Zhenwu Wang, Xu Yawen, Xinyan Su
Rok vydání:	2020
Předmět:	Toughness Materials science Calcium alginate business.industry Phosphor General Chemistry Backlight Display device chemistry.chemical_compound chemistry Flexible display Self-healing hydrogels Materials Chemistry Optoelectronics Luminous efficacy business
Zdroj:	Journal of Materials Chemistry C. 8:247-252
ISSN:	2050-7534 2050-7526
DOI:	10.1039/c9tc05311e
Popis:	White-light-emitting materials have attracted great research interest for applications in lighting, flexible display devices and biosensors. Traditional inorganic white-light-emitting materials are hard and brittle, making them difficult to apply in the field of flexible display devices. In this study, flexible and stretchable white-light-emitting double network composite hydrogels were prepared using vinyl-modified Ce-doped yttrium aluminum garnet phosphors (YAG:Ce–VTES) as crosslinkers and photoluminescent centers. The hydrogel is composed of an interpenetrating polyacrylamide (PAAm) network crosslinked by YAG:Ce–VTES and an ion-crosslinked calcium alginate network. The alginate/PAAm double network hydrogels show good stretchability and toughness, with a fracture elongation up to 600% and a compression strength up to 3.6 MPa. Moreover, white-light-emitting flexible display devices have been illuminated using a blue backlight with high luminous efficiency, optical stability and low cost. This strategy provides white-light-emitting hydrogels with good mechanical properties and lays a foundation for applications of flexible lighting and display devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1816c4d17a456f8b4fa11faaea552513 https://doi.org/10.1039/c9tc05311e Zobrazit plný text záznamu