Samsung Sets up New Record on Nitride LEDs on 200 mm Silicon

Reportedly, Samsung Advanced Institute of Science and Technology (SAIT)  has set up a new record of manufacturing nitride LEDs on 200 mm silicon.

Instead of sapphire,with this platform, the widely used substrate for making LEDs promises to cut the cost of LED deposition and processing.


Growth of high-quality GaN layers on silicon is not easy,because of  differences in both the lattice constant and the thermal coefficient of expansion of the two materials.

SAIT has addressed both these issues by creating a crack-free template featuring AlN/AlGaN buffer layers, intermediate layers and an n-type GaN layer.

On this template engineers have created an LED structure featuring five quantum wells and a p-type AlGaN electron blocking layer. Photoluminescence (PL) mapping of this epiwafer produced an average emission wavelength of 429.5 nm, with a standard deviation of 10.3 nm.

Temperature-dependent PL measurements suggest that the internal quantum efficiency of the LEDs is 65 percent.

The research team have also employed a substrate transfer technique to fabricate vertical-LED chips from 8-inch epiwafers.

SAIT released a paper to describe the method used to produce LED epi-structures with an internal quantum efficiency of 65 percent at the ninth International Conference on Nitride Semiconductors (ICNS).

Disclaimers of Warranties
1. The website does not warrant the following:
1.1 The services from the website meets your requirement;
1.2 The accuracy, completeness, or timeliness of the service;
1.3 The accuracy, reliability of conclusions drawn from using the service;
1.4 The accuracy, completeness, or timeliness, or security of any information that you download from the website
2. The services provided by the website is intended for your reference only. The website shall be not be responsible for investment decisions, damages, or other losses resulting from use of the website or the information contained therein<
Proprietary Rights
You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner.

Nichia’s Tunable 757 receives rave reviews from industry leaders, including the coveted LpS Best Sustainability Technology Award. Nichia, the leader in and inventor of the high-brightness LED, announced its game-changing single LES, tuna... READ MORE

Innovative tunable white, mid-power LED enables luminaire manufacturers to improve colour tuning, shrink optics and fixture profiles, while enabling new design options. Nichia, the leader in and inventor of the high-brightness LED, announces i... READ MORE