Division of Global Security and Energy Transition (Next-generation photovoltaic devices) Kubo Laboratory
Research and development of high-efficiency solar cells working under various light conditions
Effective utilization of solar energy, which is one of the flagship renewable energy sources, plays a crucial role when considering energy and environmental issues. Particularly, there is a demand for the enhancement and functionalization of solar cells capable of directly converting solar energy into electricity.
Towards achieving low-cost electricity generation through solar energy, we conduct research and development of photovoltaic devices, such as solar cells producible through chemical synthesis, device construction technologies, and optical measurement technologies. Our research includes the exploration of solar cell structures to efficiently convert a broad solar spectrum and fundamental research on ultra-high-efficiency solar cells utilizing colloidal quantum dots synthesized through liquid-phase methods. Additionally, we delve into the study of the material properties and photoelectric conversion characteristics of solar cells using computational science with supercomputers.
The utilization of indoor and outdoor light energy, beyond daylight, present in our daily surroundings, is increasingly vital as an energy harvest for realizing an IoT society. Therefore, we also engage in research and development of energy harvesting devices capable of operating in various light environments, including dye-sensitized solar cells enabling high-efficiency power generation even in low-light conditions.
To efficiently advance these research endeavors, we prioritize collaborative research with domestic and international universities and research institutions. Furthermore, to promote the societal implementation of our research outcomes, collaboration between industry and academia is crucial. Hence, while collaborating with various industries, we focus on research and development of energy materials and devices, primarily centering on next-generation photoelectric conversion devices.
Colloidal quantum dot solar cells
Optical properties of wide bandgap nanomaterials and solar cell application
Material research using ultra-fast laser pulses
We can feel that many phenomena, including life activities and natural occurrences on Earth, are supported by the blessings of sunlight. Many artists, including painters, are likely captivated by light. Similarly, the physicochemistry involving the interaction of light and matter is fascinating. Focusing on the dimensionality of materials can reveal interesting properties that are not observed in their bulk state. For example, graphite (3D), graphene (2D), and polyacetylene (1D) are all composed of carbon, but each exhibits distinctly different characteristics. Colloidal quantum dots are nanoparticles about a few nanometers in size, making them zero-dimensional materials. Their ability to control light absorption and.emission regions based on particle size has led to practical applications, and they are useful in a wide range of fields, including basic scientific research.
Here, we aim to enjoy the science involving the interaction of light and matter and the dimensionality of materials while also exploring the application of their unique functionalities in energy-related materials and devices.
Member
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- Project Professor
Takaya KUBO
Research Area: Solar power generation, Ultra-high efficiency solar cells, Modulation spectroscopy - Project Professor
＜As of April 2024＞
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