#photoelectrodes

[materialsscienceandengineering]

Encapsulated PbS quantum dots boost solar water splitting without sacrificial agents

A research team affiliated with UNIST has developed stable and efficient chalcogenide-based photoelectrodes, addressing a longstanding challenge of corrosion. This advancement paves the way for the commercial viability of solar-driven water splitting technology—producing hydrogen directly from sunlight without electrical input. Jointly led by Professors Ji-Wook Jang and Sung-Yeon Jang from the School of Energy and Chemical Engineering, the team reported a highly durable, corrosion-resistant metal-encapsulated PbS quantum dot (PbS-QD) solar cell-based photoelectrode that delivers both high photocurrent and long-term operational stability for photoelectrochemical (PEC) water splitting without the need for sacrificial agents. The research is published in the journal Nature Communications.

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[materialsscienceandengineering]

Diamond materials as solar-powered electrodes: Spectroscopy shows what's important

It sounds like magic: photoelectrodes could convert the greenhouse gas CO2 back into methanol or N2 molecules into valuable fertilizer—using only the energy of sunlight. An HZB study has now shown that diamond materials are in principle suitable for such photoelectrodes. By combining X-ray spectroscopic techniques at BESSY II with other measurement methods, Tristan Petit's team has succeeded for the first time in precisely tracking which processes are excited by light as well as the crucial role of the surface of the diamond materials. At first glance, lab-grown diamond materials have little in common with their namesakes in the jewelry shop. They are often opaque, dark and look not spectacular at all. But even if their looks are unimpressive, they are promising in many different applications, for example in brain implants, quantum sensors and computers, as well as metal-free photoelectrode in photo-electrochemical energy conversion.

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[materialsscienceandengineering]

Researchers develop highly efficient and stable photoelectrode for water splitting using organic semiconductors

A team of researchers, led by Professor Ji-Hyun Jang from the School of Energy and Chemical Engineering at UNIST has achieved a significant breakthrough in photoelectrode development. Through collaborative research with Professor Junghoon Lee from Dongseo University and Dr. Hyo-Jin Ahn from the German Engineering Research and Development Center LSTME Busan, the team successfully created a high-performance and stable photoelectrode by incorporating organic semiconductors as an intermediate layer in existing inorganic semiconductor-based photoelectrodes. The production of green hydrogen using solar energy involves splitting water into its constituent elements through charges generated in semiconductors that absorb sunlight. Previous studies primarily focused on utilizing inorganic semiconductors for constructing photoelectrodes.

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[don-lichterman]

Better photoelectrodes through flash heating -- ScienceDaily

Better photoelectrodes through flash heating — ScienceDaily

Solar energy can directly drive electrochemical reactions at the surface of photoelectrodes. Photoelectrodes consist of semiconducting thin films on transparent conductive-glass substrates that convert light into electricity. Most photoelectrochemical studies have focused on water splitting, a thermodynamically uphill reaction that could offer an attractive pathway for the long-term capture and…

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[bookpiofficial]

Dye Sensitized Solar Cells: Advances in Research and Development | Chapter 08 | New Advances in Materials Science and Engineering Vol. 1

This book chapter describes the production of dye sensitized solar cell by using different types of photo electrodes. This type of solar cell has been widely employed due to some unique properties such as high absorbance coefficient, chemical stability and electrochemical activity at nanoscale. Here, various types of adsorbing materials such as TiO2, ZnO, NiO, CuO and tin oxide were highlighted. Summary of cell components of dye sensitized solar cells with their photovoltaic characteristics were reported also. The power conversion efficiency of more than 10% was obtained for dye sensitized solar cells based on literature.

Author(s) Details

Dr. Ho Soon Min Centre for Green Chemistry and Applied Chemistry, INTI International University, Putra Nilai, 71800, Negeri Sembilan, Malaysia.

Read full article: http://bp.bookpi.org/index.php/bpi/catalog/view/66/785/608-1

View Volume: https://doi.org/10.9734/bpi/namse/v1