Facile synthesis of durable perovskite quantum dots film with near unity photoluminescence quantum yield for efficient perovskite light emitting diode

Internal Referencing Photoluminescence Probes for Simultaneous Sensing of O2 Gas and Temperature Based on Mn:MAPb(Br/Cl)3 Perovskite

“…PLQY was calculated by the ratio of the number of photons emitted to the number of photons absorbed. [22] Table 3. A comparison of the performance of our probe with some other reported temperature ratiometric probes based on dual emission.…”

“…PLQY was calculated by the ratio of the number of photons emitted to the number of photons absorbed. [ 22 ]…”

Recent Progress of Organic–Inorganic Hybrid Perovskite Quantum Dots: Preparation, Optical Regulation, and Application in Light‐Emitting Diodes

“…The devices based on FAPbI 3 QDs grown in situ and annealed at 100 °C show high EQEs up to 11.0% in LED (Figure 17b), and the maximum brightness is 178 W sr −1 m −2 , which is attributed to the fact that these QDs generated in situ are mainly radiation single molecule recombination. Ashjari et al [72] used poly(vinylpyrrolidone) (PVP) as a surfactant and a boundary defect passivator (Figure 17c), and optimized the stoichiometry ratio of MABr and PbBr 2 in the precursor. In situ synthesized OIHP-QDs films with PLQY up to 98% and can be stored for up to 2 years under ambient light.…”

Changes without Exchanges: Modification of Native Custom Glycolic Ligands on Colloidal Cadmium Chalcogenide Quantum Dots

“…In light of this, the community has become quite adept at circumventing or “synthesizing out” many of the physical deficiencies in QD samples that lead to decreased performance for a given application. Preparation methods for fully passivated core–shell systems have matured to the point that photoluminescence quantum yields (PLQYs) can now regularly approach unity for several different QD absorber materials with remarkable color saturation. − In short, preparation methods for more interesting, brighter, better-passivated QDs, while they are certainly still being developed, are being published much less frequently than, for instance, a decade ago. This suggests that the field is reaching a level of maturity, wherein the demonstration of new fundamental advancements and material applications will rely on the customization of well-established QD systems.…”

“…Further, reactivity of QD precursors, as well as the formed QDs themselves, is often heavily influenced by precursor–ligand binding energies in the reaction vessel and at the crystal surface . Practically, applications in solar cells, nanosensors, LEDs, and molecular imaging often require the specific tailoring of the nanocrystal’s surface chemistry. ,,− The undeniable importance of QD surface chemistry calls for continued study to broaden the ligands utilized in semiconductor nanocrystal syntheses from the aforementioned handful currently in use. We feel that this pursuit will be an important facet of future QD research because innovative chemistry techniques can be utilized to specialize and fine-tune each QD synthesis to a given application.…”