Abstract
Lead-free double perovskite nanocrystals (LFDP NCs) are promising materials for illumination and display applications because of their potential to overcome the toxicity and instability of lead-based counterparts. Despite the success in the synthesis of LFDP NCs, tunable control over the photoluminescence (PL) of LFDP NCs is still challenging. Herein, brightly emissive and stable Rb+, Sb3+-codoped Cs2NaInCl6 NCs are synthesized while fulfilling tunable self-trapped exciton (STE) emission in the blue region through the A, B-site codoping strategy. Sb3+ is introduced into the B-site of Cs2NaInCl6 NCs to break the parity-forbidden transition and boost the emission efficiency. By further altering the amount of A-site doped Rb+, the emission peak of the NCs is tunable from 447 to 528 nm, because Rb+ enlarges the electron-phonon coupling energy, which leads to larger Stokes shifts and therefore the continuous red-shift of PL emission. The Rb+, Sb3+-codoped Cs2NaInCl6 NCs exhibit robust PL and phase stability against moisture after one year of storage. A series of LFDP NCs with tunable emission are synthesized according to the codoping strategy and further employed as the color conversion materials for fabricating light-emitting diodes.
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 callDisclaimer: 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.
