Printable photovoltaic cells promote the development of nano-material technology

Printable photovoltaic cells promote the development of nano-material technology

The Royal Melbourne Institute of Technology (RMIT University, RMIT) research team works with top scientists in Australia and Japan to advance the development of next-generation solar cell technology.

RMIT, the Australian Commonwealth Scientific and Technological Organization (CSIRO) and the Japan Science and Technology Agency (JapanScienceandTechnologyAgency) this joint research and development project focuses on the use of nanotechnology is cheaper and less toxic photovoltaic cells.

For printable solar cell applications, the research team actively explores the synthesis of inorganic nanometers using low-cost, enriched element semiconductors. Recently, the research results have been published in the high-impact Journal of the American Chemical Society.

The RMIT research team is led by Professor Yasuhiro Tachibana of the RMIT School of Aerospace, Mechanical and Manufacturing Engineering.

Professor Tachibana said: "The focus of the photovoltaic industry has always been on reducing materials and production costs for solar panels."

"In order to meet the requirements of the industry, the scientific research team is committed to developing new, low-cost and low-toxic colloidal nanomaterials. Therefore, the research of the next generation of solar cells is of great significance."

Colloidal nanocrystals (colloidalnanocrystals) can be used as "ink" quickly and cheaply in printers.

At present, despite the toxicity concerns, the main material of colloidal nanocrystals is still cadmium or lead.

In addition to the Professor Yasuhiro Tachibana, the research team also includes Professor Joelvan Embden of the School of Aerospace, Mechanical and Manufacturing Engineering and Professor Kay Latham of the Bosch and Applied Sciences College. They have been devoted to the research and development of alternative materials for the synthesis of nanocrystals.

Dr vanEmbden said: "In view of the fact that the initial reaction conditions are not yet known, the synthesis of new nanocrystals is still one of the most challenging tasks."

He said: "Our research focus has been on incorporating elements such as copper and antimony into nanocrystals, because these elements are not only rich in resources, but also low in cost and less toxic."

During research and development, the team has discovered colloidal nanocrystals of copper and antimony copper sulfide (CAS).

These two kinds of nanocrystals are brownish black and have strong absorption capacity of visible light and infrared light, and are suitable as light absorbers in solar cells.

The colloidal nanocrystal solution (semiconductor nanocrystal ink) can be easily applied to thin nanocrystal film materials.

Professor Tachibana said that the nanocrystalline thin film materials assembled on the electrodes can be applied to photovoltaic devices, thin film thermoelectric materials and transistors, and the cost will be cheaper than other methods.

At present, the research team has confirmed that under the irradiation of solar rays, nanocrystalline thin film materials have the possibility of generating electricity.

The American Chemical Society (ACS) was established in 1876 and has become one of the largest scientific and technological associations in the world, with more than 163,000 members. For many years, ACS has been committed to providing high-quality literature information and services for global chemical research institutions, enterprises and individuals, and has become a world-renowned scientific and technological publishing organization. ACS journals are rated by ISI's JournalCitationReport (JCR): the most cited chemical journal in the field of chemistry. In this field, "Journal of the American Chemical Society" is the highest ranked journal.

Professor XinghuoYu, director of the RMIT Platform Technology Institute, said that the publication of the paper in such a high-impact journal has fully proved the high level of the research results of the research team.

Professor Yu added: "The research team can be described as a collection of top scientists, with a high gold content, and is mainly dedicated to solving complex problems with national and global influence for the industry."

"This joint research achievement of the School of Aerospace, Mechanical and Manufacturing Engineering and the School of Applied Science will undoubtedly benefit the entire industry and society."

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