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.
The paper studies the technologies to improve the quantum efficiency of light-emitting diodes (LEDs), and designs new LED structures from the theory and software simulation. Including new LEDs with anti-membrane and truncated-inverted-pyramid (TIP) chip. Then we try to design a new kind LEDs with the two ways together. Their relative improvements of luminous efficiency are 16.8%, 26.933% and 47.198...