The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We report on the use of confocal thermoreflectance for accurate surface temperature measurement of transparent LEDs. Confocal thermoreflectance effectively suppresses light from beneath the LED surface, compared to widefield measurements, for a red GaP LED.
The use of 3-layer staggered InGaN quantum wells light-emitting diodes at 520-525 nm, grown by metal-organic chemical vapor deposition with graded-temperature profile, resulted in increase in efficiency and output power by 2-times.
Photoluminescence lifetime and internal quantum efficiency measurements of deep ultraviolet (~230 nm) light-emitting diode structures are correlated to packaged devices and compared to measurements on more mature 280 nm structures.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.