This improved capability provides a significant reduction in optical absorption in the UV-C wavelengths,resulting in dramatic improvements in the processing and performance of UV-C optoelectronic components.
This enhanced material will offer an improvement of lifetime and power output for UV-‐C light emitting diodes(LEDs).For the rapidly growing water purification market,the requirement for extended lifetime and improved efficiency are critical market enabling parameters.This new high transparency bulk AlN substrate material has demonstrated improved output performance for UV-C LEDs,by increasing short wavelength transparency,and limiting the amount of substrate thinning required for optimal UV-C emission.
"This new substrate will provide our customers with the bulk AlN material required to develop industry leading UV-‐C LEDs which will enable improved EQE,lifetime and reliability"stated Joe Grzyb,HexaTech CEO."The improved transparency,coupled with industry leading bulk quality,once again demonstrates HexaTech's commitment to quality and technology leadership."
The improved material performance,after correction for reflection losses,exhibits absorption coefficient values of<100 cm-1(50 cm-1 typical)@265 nm,and is measurably superior to previous generations of single crystal AlN.
About HexaTech HexaTech is an industry-leading manufacturer of single crystal Aluminum Nitride(AlN)substrates.This substrate material will enable long life UV-C light emitting diodes(LEDs)for disinfection applications,deep UV lasers for biological threat detection,and high voltage power semiconductors for smart grid and efficient power conversion.
HexaTech's current product lines include single crystal and polycrystalline AlN substrates.Long life UV-‐C LEDs and high voltage power devices based on AlN substrates are also in development.
Founded in 2001 with a team of industry experts in III-‐nitride semiconductors,the team has successfully solved complex material science and engineering challenges to commercialize high quality bulk AlN for volume production.
Source:
http://www.i-micronews.com/news/HexaTech-high-transparency-single-crystal-aluminum-nitride,9441.html