US BOLB Company announces major technical breakthroughs in deep UV LEDs

Introduction: On June 12, 2018, the US announced BOLB Company that it has achieved 12.2% of the external quantum efficiency (EQE) on fully transparent UV light diodes (UVC).

On June 12, 2018, the United States BOLB Company announced that it has achieved an external quantum efficiency (EQE) of 12.2% on a fully transparent UV radiation LED (UVC LED). This technical breakthrough gives rise to UVC LEDs to achieve near visible LED efficiency in the next few years, and will further expand the use of UVC LED disinfection and sterilization technology in daily life.

Previously, improvement of the light efficiency of deep UV LEDs has been limited by the narrowband hole conveyor layer, which results in strong light absorption on the P-type chip structure of the semiconductor side. Different attempts to remove this narrow band layer have always caused high operating voltages and significantly impaired LED power tension properties, and the resulting high heat will lead to shorter service life.

Today, BOLB achieves the major breakthrough of the complete UVC LED translucent structure of the best bactericidal wavebands, recognizing 12.2% external quantum efficiency (EQE) and 9 of the first generation products based on this technology. .5% Electro-optical conversion efficiency (WPE). Compared with other similar products, BOLB can achieve the same output with the minimum number of chips and the lowest current in the band that is more suitable for sterilization. This breakthrough provides a solid foundation for further optimization of subsequent high power UVC devices and achieves target performance of 50% EQE or higher.

At present, this product has been integrated into a small scale after strategic cooperation.