Tuning the optical properties of colloidal Quantum Dots using thiol group capping agents and its comparison

Investigations on Multiexciton Generation and Hot Electron Transfer Process in CdTe QD-Decorated TiO2 Nanostructures for Effective Photocatalytic Activity

“…The resulting solutions were then transferred into a three-neck round-bottom flask (RB flask) for refluxing at a constant temperature of 100 °C. It is worth noting that, depending on the refluxing time, the color of the solutions changed from green to red, indicating the growth of CdTe QDs when the refluxing time was increased …”

“…Their ability to generate multiexcitons (known as hot electrons) makes them ideal candidates for numerous applications like photocatalysis, solar cells, electronic devices, and nanocrystal lasers . Among the various types of QDs, cadmium telluride (CdTe) is the most preferred QD for photocatalysis owing to its superior quantum yield (QY) and large exciton Bohr radius of 7.3 nm. − Their high photostability compared to other cadmium-based sulfides and selenides (chalcogenides) is also a reason for their preference.…”

“…It is worth noting that, depending on the refluxing time, the color of the solutions changed from green to red, indicating the growth of CdTe QDs when the refluxing time was increased. 15 Synthesis of CdTe QDs/TiO 2 Nanostructures. For the preparation of CdTe QDs/TiO 2 nanostructures, TiO 2 nanorods were initially grown over fluorine-doped tin oxide (FTO) substrates hydrothermally.…”

CdTe QD-decorated GO nanosheet heterojunction for efficient photocurrent generation and photocatalytic activity

“…Environmental pollution is one of the greatest societal issues today, and photocatalysis remains the most economic and efficient tool for its remediation. 1 Cadmium telluride (CdTe) QDs are one of the conventionally preferred photocatalyst materials due to their suitable bandgap (1.54 eV), 2 excellent quantum yield (60%), 3 high photochemical stability and excitonic Bohr radius (7.3 nm) 4 compared to those of cadmium sulfide and cadmium selenide. Their ability to be activated by visible light with a positive valence band (VB) favoring oxidation reaction are also reasons for preferring CdTe.…”

UV-induced Zn:Cd/S quantum dots in-situ formed in the presence of thiols for sensitive and selective fluorescence detection of thiols

“…Thiol groups are the most conventionally preferred ligands for stabilizing the QDs with reduction the toxicity and making them hydrophobic. The energy levels of the thiol inhibit hole trapping and the resultant material is highly fluorescent in nature 22 . Surface capping of QDs most often takes advantage of surface interactions between a thiol-molecule and the metal/metalloid core of the QD nanocrystal.…”