biostudies-literatureShaek STechnion-Israel Institute of TechnologyHorizon 2020 Framework ProgrammeNancy and Stephen Grand Technion Energy ProgramEuroTech alliance programIsrael Science FoundationRussell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology9064-9072https://www.ebi.ac.uk/biostudies/studies/S-EPMC10653075biostudies-literatureUnknown35(21)Lead-free perovskite nanocrystals are of interest due to their nontoxicity and potential application in the display industry. However, engineering their optical properties is nontrivial and demands an understanding of emission from both self-trapped and free excitons. Here, we focus on tuning silver-based double perovskite nanocrystals' optical properties via two iso-valent dopants, Bi and Sb. The photoluminescence quantum yield of the intrinsic Cs₂Ag_1-<i>y</i>Na_<i>y</i>InCl₆ perovskite increased dramatically upon doping. However, the two dopants affect the optical properties very differently. We hypothesize that the differences arise from their differences in electronic level contributions and ionic sizes. This hypothesis is validated through abChemistry of materials : a publication of the American Chemical SocietyHow Does Local Strain Affect Stokes Shifts in Halide Double Perovskite Nanocrystals?PMC10653075949682890015Dror SShaek SMassasa EHBekenstein YKhalfin SCastelli IEPokroy BLang AKauffmann YStrassberg RWong ABKortstee LTJLevy SShechter RLifer RPolishchuk IShamaev BfalseHow Does Local Strain Affect Stokes Shifts in Halide Double Perovskite Nanocrystals?Lead-free perovskite nanocrystals are of interest due to their nontoxicity and potential application in the display industry. However, engineering their optical properties is nontrivial and demands an understanding of emission from both self-trapped and free excitons. Here, we focus on tuning silver-based double perovskite nanocrystals' optical properties via two iso-valent dopants, Bi and Sb. The photoluminescence quantum yield of the intrinsic Cs₂Ag_1-<i>y</i>Na_<i>y</i>InCl₆ perovskite increased dramatically upon doping. However, the two dopants affect the optical properties very differently. We hypothesize that the differences arise from their differences in electronic level contributions and ionic sizes. This hypothesis is validated through ab2023-01-01T00:00:00Z2023 Nov2025-04-05T09:14:17.506Z2025-04-05T09:14:17.506ZS-EPMC106530753798200610.1021/acs.chemmater.3c01771