Reliability Estimation and Failure Analysis of LEDs with Various Currents and Correlated Color Temperatures for Identical Power Ratings: A Comparative Study.

LEDs are available in a variety of correlated color temperatures (CCTs) to suit specific application needs. Manufacturers also offer LEDs with varying power ranges, and identical power ratings but different voltage and current specifications. While consumers prioritize power ratings and CCT, the lack of reliability information in manufacturer specifications makes LED selection challenging.

Development of enduring interstitial defects in Mg-doped CuO thin films.

Doping is one of the easiest methods to enhance the properties of semiconducting thin films. This work presents a systematic study of the influence of Mg doping on the optoelectronic properties of copper oxide (CuO) thin films prepared by spray pyrolysis. The pristine and doped films were prepared on glass substrates at an optimized temperature of 350 °C and a precursor solution concentration of 0.

Spectroscopic valuation of phonon lifetime and surface characteristics of ZnMgS thin film.

The anharmonic properties of the longitudinal optical (LO) phonon mode of Mg-doped ZnS (Zn MgS) are investigated using the Balkanski and Klemens models on the temperature-dependent Raman spectra. The variation in the position of the Raman line, peak width, and phonon lifetime with temperature was fitted using three and four phonon decay mechanisms. The values of the anharmonic fitting parameters indicated low anharmonicity.