Abstract
Inorganic perovskite quantum dots (IPQDs) have a series of advantages such as high photoluminescence quantum yield (PLQY), narrow full width at half maximum (FWHM), wide color gamut, and adjustable fluorescence wavelength. In this study, we proposed a facile method to synthesize CsPbBr3 and CsPb(Br/Cl)3 QDs with excellent stability. The IPQD surfaces were modified by chains of EHDAB at room temperature. The obtained CsPbBr3 QDs show cubic shapes with average particle size of about 10 nm. The EHDAB can greatly enhance the PL intensity of IPQDs, and the PL intensity of the solution added to EHDAB was increased by 300% compared with the blank group (without EHDAB). The modified CsPbBr3 QDs can still retain 93.4% of PL intensity after being stored for 12 days at room temperature (25 ℃). The CsPb(Br/Cl)3 quantum dots possessing narrow FWHM of 18 nm were simply obtained by ion exchange at room temperature. The emission wavelength of CsPb(Br/Cl)3 quantum dots could be adjusted from 517 to 456 nm. The results show that the modified IPQDs could be used as potential luminescent materials for optoelectronic devices.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Materials Science: Materials in Electronics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
