Quantum dot (QD) materials have distinctive properties compared to the bulk form. Their size is usually less than 10.0 nm on average. As such, the properties of QD materials can be modified due to their quantum confinement effect and surface effect. There are different types of QD materials depending on their chemical composition. QD materials have applications in energy conversion (e.g. QD solar cell and water splitter), light-emitting diodes (LEDs), imaging and therapy in the medical field, and sensing.

At present, QD materials have been widely studied for applications in energy devices, particularly in solar cells, photocatalysis, supercapacitors, and LEDs. To have efficient QD-based energy devices, the characteristics of the QD materials used need to be understood. Additionally, the design and characterization of new QD materials are also important for improved and cost-effective energy devices.

The aim of this Special Issue is to solicit state-of-the-art original research and review articles discussing the progress and future challenges in the applications of QD materials in photo-electrochemical and/or electrochemical energy devices. Submissions discussing the fabrication of QD materials and their characterization are encouraged.

Potential topics include but are not limited to the following:

• Synthesis and characterization of inorganic/organic QD materials
• QD materials for photocatalysis
• QD materials for solar conversion devices
• QD materials for electrochemical energy storage devices
• Modeling and simulation of QD materials
• Other energy-related applications using QD materials