Ligands for CsPbBr3 perovskite quantum dots: The stronger the better?

Various approaches to synthesize water-stable halide PeNCs

“…High-density insulating ligand passivation deteriorates optoelectronic properties; hence different types of ligands have been explored to balance between stability and optoelectronic performance. Surfactants (didodecyldimethylammonium sulfide (DDA + S 2− ), 81 sodium dodecyl sulfate (SDS), 82 dodecylbenzenesulfonic acid (DBSA), 90 etc. ), bi-dentate ligands (succinic acid, 2,2′-iminodibenzoic acid, 83 N 1, N 2-didodecyl- N 1, N 1, N 2, N 2-tetramethylethane-1,2-diaminium bromide (DTDB), 91 etc.…”

“…Surfactants (didodecyldimethylammonium sulde (DDA + S 2− ), 81 sodium dodecyl sulfate (SDS), 82 dodecylbenzenesulfonic acid (DBSA), 90 etc. ), bi-dentate ligands (succinic acid, 2,2 ′ -iminodibenzoic acid, 83 N1,N2-didodecyl-N1,N1,N2,N2-tetramethylethane-1,2-diaminium bromide (DTDB), 91 etc.…”

Development of Perovskite Quantum Dots for Two-Dimensional Temperature Sensors

“…Perovskite quantum dots are extensively explored for applications since Li et al demonstrated that they could be synthesized at room temperature . Out of all the properties, its photoluminescence has been explicitly well-studied. − The photoluminescent intensity of the quantum dots is directly linked to the temperature due to the thermal quenching effect. − While numerous studies have been devoted to improving the stability of the quantum dots’ structure or photoluminescence either using different ligands or substituting the lead ion with the more stable copper ion, , there have been merely any studies conducted on making them less stable due to the lack of incentives. Owing to the stable relationship between the photoluminescent intensity and temperature, a few attempts have been made to utilize them as a temperature sensor. , There have been a few attempts in recent years to utilize CsPbBr 3 QDs for thermal sensing by embedding the QDs into different mediums.…”

“…39−43 The photoluminescent intensity of the quantum dots is directly linked to the temperature due to the thermal quenching effect. 44−46 While numerous studies have been devoted to improving the stability of the quantum dots' structure or photoluminescence either using different ligands 47 or substituting the lead ion with the more stable copper ion, 48,49 there have been merely any studies conducted on making them less stable due to the lack of incentives. Owing to the stable relationship between the photoluminescent intensity and temperature, a few attempts have been made to utilize them as a temperature sensor.…”

Visible Light-Driven Luminescence Evolution of CsPbBr3 Quantum Dots via Surface Reconstruction

“…To address these issues, early efforts to improve the stability and PLQY of perovskite QDs have witnessed impressive progress, such as ligand exchange (LE), − doping, − core/shell, and other methods. − Among them, ligand exchange is regarded as an efficient way to address the problem of surface ligand desorption related to the weak bonding of oleic acid and oleylamine. For example, Zhang and co-workers proposed a multidentate ligand of Boc- d -glutamic acid (BDGA) to replace the long-chain ligand, which enabled to reach an exceptional PLQY approaching 100% and a high luminous efficiency of 93.5 lm/W for white LEDs .…”