Selenium

Selenium (Se) is a nonmetal element with semiconductor properties and photoconductive behavior. It appears in several allotropic forms, including a metallic gray form and red amorphous powder. With a melting point of 221 °C and boiling point of 685 °C, it is moderately stable and has limited metallic conductivity that increases with light exposure. Selenium is chemically similar to sulfur and tellurium, forming compounds such as selenides and selenates.

Goodfellow offers selenium in purities ranging from 99.95% to 99.999% for a wide range of scientific and industrial applications, providing this versatile metalloid in various forms to meet diverse research and manufacturing needs. Selenium is known for its unique photoconductive properties and its ability to convert light directly into electricity, making it invaluable in several key industries. In the electronics sector, selenium is widely used in the production of photovoltaic cells and photodetectors, where its sensitivity to light enables efficient energy conversion and sensing capabilities. The glass industry utilizes selenium as a decolorizing agent and to produce red glass, taking advantage of its ability to impart specific optical properties. In the field of xerography, selenium's photoconductive nature makes it essential for manufacturing photoreceptor drums in laser printers and photocopiers. Emerging technologies benefiting from selenium include advanced solar panel designs, where selenium compounds are being explored to enhance the efficiency of thin-film solar cells. Additionally, selenium's role in quantum dot production is driving innovations in next-generation display technologies and biomedical imaging. Goodfellow's provision of high-quality selenium supports ongoing research in materials science, particularly in the areas of optoelectronics and renewable energy solutions.