Strongly quantum-confined Mn²⁺-doped CsPbBr₃ nanocrystals in MCM-41 with pure blue emission

Abstract

We synthesized 465 nm pure blue light-emitting Mn2+-doped CsPbBr3 nanocrystals via a template-assisted strategy without the coprecipitation of bulk materials.

Solution-grown millimeter-scale Mn-doped CsPbBr3/Cs4PbBr6 crystals with enhanced photoluminescence and stability for light-emitting applications

“…The enhanced stability of the Mn-doped CsPbBr 3 /Cs 4 PbBr 6 crystals can be mainly due to the Mn 2+ ions replacing a portion of the Pb 2+ ions, and results in an increase of the absolute value of the formation energy of each Pb 2+ (or Mn 2+ ). 31,48 We note that the content of Mn 2+ in our paper is smaller than the 2.08 mol% value mentioned in ref. 31.…”

Efficient and Stable Self-Assembly Blue-Emitting CsPbBr3 Nanoplatelets with Self-Repaired Surface Defects

“…Grandhi et al reported that the PL intensity of Cu 2+ -doped CsPbBr 3 NPLs was decreased to 50% of the maximum after 6 h under UV irradiation, and the PL peak nearly red-shifted by 5 nm . According to Li et al, blue-emitting CsPbBr 3 NPLs using triple-source ligand-assisted reprecipitation showed another emission peak located at 513 nm that appeared after 40 min under UV light irradiation . However, in this work, without doping extra ions , and complicated surface treatment, , the PL-improved NPLs still kept about 73% of the initial PL intensity even after the continuous irradiation of 395 nm UV for 30 h, and there was no obvious shift of PL peak, indicating the good stability under UV illumination.…”

“…43 According to Li et al, blue-emitting CsPbBr 3 NPLs using triple-source ligand-assisted reprecipitation showed another emission peak located at 513 nm that appeared after 40 min under UV light irradiation. 44 However, in this work, without doping extra ions 23,44 and complicated surface treatment, 28,45 the PL-improved NPLs still kept about 73% of the initial PL intensity even after the continuous irradiation of 395 nm UV for 30 h, and there was no obvious shift of PL peak, indicating the good stability under UV illumination. The long-term stability of pristine NPLs in solutions was determined at room temperature (∼28 °C), as shown in Figure S8.…”

Stability improvements of metal halide perovskite nanocrystals and their optoelectrical applications

“…8 Subsequently, various types of mesoporous silicon particles were reported to encapsulate MHP nanocrystals (Fig. 10b), including SBA-15, [92][93][94][95] MCM-41, [94][95][96][97] MCM-48, 95 etc. Mesoporous Y 2 O 3 nanoparticles were also reported to encapsulate MHP nanocrystals, which inhibit the aggregation process of MHP nanocrystals, and show enhanced stability against heat-induced, irradiationinduced and humidity-induced decomposition.…”