Veeramani, V.V.VeeramaniBao, Z.Z.BaoChan, M.-H.M.-H.ChanWang, H.-C.H.-C.WangJena, A.A.JenaChang, H.H.ChangHu, S.-F.S.-F.HuLiu, R.-S.R.-S.Liu2019-07-312019-07-312019https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056460054&doi=10.1016%2fj.jssc.2018.11.002&partnerID=40&md5=c486439e1bdf929f394a7605cb17ef02https://scholars.lib.ntu.edu.tw/handle/123456789/415892In this review paper, we highlight the utilization of nanostructured quantum dots (QDs) in light-emitting diodes, biomedical, and energy-related applications. We discuss different preparation methods, cation-doping effects, and the optical applications of perovskite QDs. Cadmium selenide QDs are semiconductor materials with narrow bandgaps; therefore, their optical properties and electronic structures can be tuned. They can absorb photons (light energy) and convert multiple electron-hole pairs efficiently via multiple exciton generations. These effective light absorption properties are suitable for solar-driven water electrolysis processes and efficient photo-electrochemical lithium-air batteries. We focus on the utilization of upconverting nanoparticles in the field of biomedical applications. Suitable bandgap position, efficient charge separation, transportation, and photo-stability are the advantages of QD nanostructured materials. Hence, they are efficient and challenging candidates for the future. © 2018 Elsevier Inc.Biomedical; Cadmium selenide; Lithium-air battery; Q-LED/LCD; Solar water splitting; Supercapacitor[SDGs]SDG7Cadmium compounds; Electronic structure; Energy gap; Excitons; II-VI semiconductors; Image processing; Light; Light absorption; Lithium-air batteries; Materials handling; Medical applications; Nanocrystals; Optical properties; Perovskite; Semiconductor doping; Supercapacitor; Water absorption; Biomedical; Cadmium selenides; Energy storage applications; Multiple exciton generations; Nanostructured quantum dots; Q-LED/LCD; Solar water splitting; Upconverting nanoparticles; Semiconductor quantum dotsjournal article10.1016/j.jssc.2018.11.0022-s2.0-85056460054