Synthesis and optical properties of II–VI semiconductor quantum dots: a review

Inkjet printing of heavy-metal-free quantum dots-based devices: a review

“…However, the intrinsic toxicity of HM QDs restricts their application and further commercialization despite their superior stability and optoelectrical properties [3]. Hence, researchers have turned their attention to developing HMF QDs, including II-VI QDs (ZnO, ZnS, ZnSe, and ZnTe) [4], III-V QDs (III = In, Ga, Al; V = N, P, Sb) [5], I-III-VI QDs (I = Cu, Ag; III = In, Al, Ga; VI = S, Te, Se) [6], lead-free perovskite QDs (LFP QDs) [7], carbon-based QDs (carbon QDs (CQDs) [8] and graphene QDs (GQDs) [9]), silicon QDs (Si QDs) [10]. The colloidal nature of QDs makes it possible to use the IJP technique to deposit QDs on substrates for assembling various devices such as QD-based light-emitting diodes (QLEDs) [11], humidity sensors [12], UV-shields [13], synaptic transistors [14], photodetectors (PDs) [15], anticounterfeit tags [16], color conversion layers [17], photovoltaic cells (PVCs) [18] (see figure 1), some of which will be introduced in section 5.…”

Photoluminescence from Two-Phase Nanocomposites Embedded in Polymers

“…In physics and material science, QDs primarily explore the behavior of electrons and photons at the nanoscale, whereas in chemistry, this they are associated with colloids, micelles, polymer composites, and similar structures [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. The interdisciplinary nature of nanotechnology allows for the manipulation and design of materials at the atomic and molecular levels, opening new possibilities in fields such as information technology, environmental science, medicine, food safety, agriculture, and more [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Semiconductor QDs, being a pivotal class of materials, hold significant promise for various nanoscale applications owing to their unique structural, optical, and electrical properties [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ].…”

“…The interdisciplinary nature of nanotechnology allows for the manipulation and design of materials at the atomic and molecular levels, opening new possibilities in fields such as information technology, environmental science, medicine, food safety, agriculture, and more [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Semiconductor QDs, being a pivotal class of materials, hold significant promise for various nanoscale applications owing to their unique structural, optical, and electrical properties [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. The distinct characteristics of semiconductors make them particularly exciting for researchers and engineers working on nanoscale technologies.…”

“…Although this process is generally consistent, details of how the electronic state changes and the recombination processes could reflect complex events. The changes could occur due to many factors, including but not limited to, scattering and defect or impurity states, interaction between the fluorescing components, environments where the QDs are dissolved/embedded, and interfaces to which they are exposed [ 1 , 2 , 3 , 6 , 7 , 8 , 17 , 18 ]. The mechanism of detailed balance also plays a role in some cases, as has been noted previously [ 2 ].…”

“…Nanotechnology has emerged as a groundbreaking field with diverse applications across various disciplines [1]. Among the nanoscale materials, quantum dots (QDs) hold a special place due to their unique properties [1][2][3][4][5][6][7][8][9][10][11][12]. The convergence of physics, materials science, chemistry, and biotechnology at the nanoscale has paved the way for the creation of novel materials exhibiting properties markedly different from their bulk counterparts [1][2][3][4][5][6][7][8].…”