Gram-scale synthesis of carbon quantum dots with a large Stokes shift for the fabrication of eco-friendly and high-efficiency luminescent solar concentrators

Abstract

Luminescent solar concentrators (LSCs) are large-area sunlight collectors coupled to small area solar cells, for efficient solar-to-electricity conversion. The three key points for successful market penetration of LSCs are: (i)...

Highly emissive fluorescent silica-based core/shell nanoparticles for efficient and stable luminescent solar concentrators

“…Moreover, increasing SiLRNPs concentration, a further enhancement in device performance was observed, a ηdev,dark background as high as 1.07% was achieved at SiLRNPs loading equal to 50 wt.%, which account for a 460% enhancement compared with the pure LR305 based LSC devices with the same luminophore equivalent concentration. The present results, that are in line with most recent literature [77,82,87], could be ascribed to the reduced tendency of these nanostructured luminophores to aggregation and to the improved LQY.…”

“…The higher ηint found in SiLRNP-PDMS LSCs in comparison with the corresponding LR305-PDMS systems at the same LR305 equivalent concentration can be understood in terms of higher LQY of SiLRNP luminophore species and of reduced quenching losses (nonradiative relaxation pathways). These outcomes are comparable with that of colloidal fluorescent particles recently proposed in literature [76][77][78][79][80][81][82], further proving the practical viability of our nanostructured luminophore.…”

3D Ordered Porous Hybrid of ZnSe/N‐doped Carbon with Anomalously High Na+ Mobility and Ultrathin Solid Electrolyte Interphase for Sodium‐Ion Batteries

“…Three distinct peaks at 284.7, 285.8, and 287.6 eV in the C 1s curve (Figure 4e) belong to the CC, CO, and CN bonds, respectively. [38,40,41] The N 1s curve (Figure 4f) presents the existence of graphitic N (402.0 eV, 6.3%), pyrrolic N (400.4 eV, 64.9%), and pyridinic N (398.6 eV, 28.8%). [42][43][44] The pyrrolic and pyridinic nitrogen atoms are major proportion, which can not only introduce several defects, and accordingly lead to a great increase in the active reaction sites, but also enhance the conductivity of the hybrid and regarded as efficient adsorption sites for Li 2 Se/Na 2 Se/K 2 Se.…”

Review on Colloidal Quantum Dots Luminescent Solar Concentrators

“…Inorganic, shelled QD nanocrystals such as CdSe/CdS core/shell QDs and PbS/CdS core/shell QDs exhibited large Stokes shifts and high photoluminescent quantum yields (PLQYs) [58–61] . Organic QDs such as carbon quantum dots (CQDs) [62–64] and graphene quantum dots (GQDs) [65–68] are promising nanoparticles for their natural abundance, high photostability, and photoconversion capabilities. The doping of QDs with other compounds such as organic dyes such as Coumarin or metals such as Cu has resulted in improved optical efficiencies by reducing reabsorption losses and controlling the frequencies of re‐emitted light [69–75] .…”