Semiconductors at Room Temperature

 


Research was published on January 16, 2025 in the journal Nature Synthesis. Scientists at the University of Twente have created a semiconductor material at room temperature.

The team used metal halide perovskites. These are well known for absorbing sunlight adeptly. They are currently used in LED devices, semiconductors and solar cells. Making these materials in a useable form with single orientation is very difficult.

The conventional formation is usually polycrystalline form (or non-ordered fashion.) Normally, high ordered semiconductors use high processing temperatures. This novel process skips the heat and builds up the material in layers using a pulsing laser beam. 

Junia Solomon Sathiaraj is a Ph.D. student at the Inorganic Material Science research group. She explains, “Halide perovskites are already remarkable semiconductors and are, for example, used in solar cells. But usually we have very little control in how exactly the material grows. This means the molecules in the materials have many different structures and orientations. In theory, if we improve the quality of the material, we also improve its efficiency,” Sathiaraj stated. 

Monica Morales-Mais led the study under the ERC StG CREATE project. She reports, “It’s all about getting the structure right. A perfectly ordered structure in the material is essential for creating devices that are efficient and reliable. The resulting material is stable for over 300 days and offers great potential for applications like solar panels and advanced electronics. This innovation not only helps us in creating greener, more cost-effective technologies but also paved the way for new scientific discoveries in materials research.”


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