This article is brought to you by: 

Determination of Chromaticity Coordinates and Bandgaps of III-V LEDs Using Electroluminescence Spectroscopy

In 1907 English engineer Henry Joseph Round was testing the rectifying current behaviour of SiC crystallites and noticed that a faint yellow light was emitted from the SiC; this was simultaneously the first reported observation of the phenomena of electroluminescence spectroscopy and the first successful operation of a light emitting diode (LED). The work of Round was expanded on by a few others in the early 20th century, but it would take many decades for LEDs to become efficient enough for practical use.

This article is brought to you by: 

UV/VIS Spectroscopy Applications in Chemistry

UV/VIS spectroscopy refers to absorption/reflection measurements performed in the ultraviolet and visible light spectrum and is one of the common tools in many a chemist’s tool box. This versatile measurement technique has a secure place in the chemistry lab. Read more to learn how spectroscopy is empowering today’s chemistry and nanotechnology research.