Controllable Photoelectric Properties of Carbon Dots and Their Application in Organic Solar Cells

Detection of oxytetracycline in milk using a novel carbon dots-based fluorescence probe via facile pyrolysis synthesis

“…In recent years, carbon dots (CDs) as a type of nanoparticles have attracted considerable attention in the environmental and chemical elds due to their unique optical properties (Javed et al 2021), tunable emission wavelength (Liu et al 2020), excellent water solubility ) and good biocompatibility (Xu et al 2016). CDs-based materials are widely used in bio-imaging (Shi et al 2022), uorescent probe (Anjana et al 2017) photoelectric devices and other elds (Zhao et al 2022). Various technologies have been developed to prepare CDs including top-down and bottom-up approaches for various applications.…”

Carbon dots-based delayed fluorescent materials: Mechanism, structural regulation and application

“…Carbon dots (CDs) have become a new generation of carbon nanoluminescent materials following fullerene, carbon nanotubes, and graphene, because of their excellent photostability, low toxicity, low cost, tunable photoluminescence, and so on. They have demonstrated considerable application prospects in light-emitting diodes, solar cells, biological imaging, sensing, detection, medical treatment, UV-blocking and other fields ( Zhang et al., 2016a ; Zhang et al., 2016b ; Xu et al., 2018a ; Xu et al., 2018b ; Wang et al., 2018a ; Ding et al., 2019 ; Yuan et al., 2019 ; Zhao et al., 2021 ; Zhao et al., 2020b ; Atabaev, 2018 ; Zhang et al., 2022 ; Ali et al., 2020 ; Ghosh et al., 2021a ; Ghosh et al., 2021b ; Kailasa and Koduru, 2022 ; Feng et al., 2017 ; Ashrafizadeh et al., 2020 ; Dong et al., 2019 ; Kousheh et al., 2020 ; Wang et al., 2021a ). Since the discovery of CDs in 2004 ( Xu et al., 2004 ), the research on CDs has mainly focused on their synthesis and fluorescence performance regulation ( Ju et al., 2017 ; Qu and Sun, 2020 ; Wang et al., 2018b ).…”

“…The “top-down” method is the way to directly obtain CDs from large-sized carbon source (such as graphite, graphene, carbon fiber, carbon nanotubes) by decomposition and exfoliation process. The CDs prepared by “top-down” approach usually exhibit higher crystallization ( Zhao et al., 2021 ) whereas the “bottom-up” method is the way to prepare CDs from organic small molecules by carbonization and polymerization reaction. The CDs prepared by “bottom-up” generally possess the controlled optical behavior because of controllable size and heteroelement doping ( Zhang et al., 2016 ).…”