Highly Efficient and Stable White Light-Emitting Diodes Using Perovskite Quantum Dot Paper.

ABSTRACT: Perovskite quantum dots (PQDs) are a competitive candidate for next-generation display technologies as a result of their superior photoluminescence, narrow emission, high quantum yield, and color tunability. However, due to poor thermal resistance and instability under high energy radiation, most PQD-based white light-emitting diodes (LEDs) show only modest luminous efficiency of ≈50 lm W^-1 and a short lifetime of <100 h. In this study, by incorporating cellulose nanocrystals, a new type of QD film is fabricated: CH₃NH₃PbBr₃ PQD paper that features 91% optical absorption, intense green light emission (518 nm), and excellent stability attributed to the complexation effect between the nanocellulose and PQDs. The PQD paper is combined with red K

SUBMITTER: Kang CY 

PROVIDER: S-EPMC6918104 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature