Tsinghua University demonstrates first high-brightness blue LED in China using Aixtron MOCVD tool
In October 1999, Tsinghua University and Shandong Incalcu Group reached a collaboration agreement regarding the development of ultra-high brightness blue LEDs. Since then, both parties have worked very hard to enable the purchase of some key equipment, including Aixtron s proven AIX 2000HT MOCVD system, and consequently have set up a small scale production line in a 1000 class clean room in record time. The fast installation of this highest quality equipment was carried out in accordance with highest standards. Blue LED epiwafers that match the standard worldwide have now been successfully achieved in less than three months since acceptance. Tsinghua University represents therefore the first self-efficient R&D institute in this field in mainland China.
Professor Yi Luo of Tsinghua University states: "Being the first in mainland China to purchase a commercial MOCVD system, we have to be careful, and to be sure. Through some very extensive market research, and after comparing the MOCVD systems from all equipment vendors world-wide, we decided to purchase from Aixtron, because of the high quality of their products, as well as their outstanding service and support. Within the short time of using this system, we have already achieved some good results. The features of our blue LED chips: a 470nm wavelength, a power above 1.5mW and a forward bias voltage of 3.6V at a current of 20 mA, corresponding to more than a 1 cd packaged LED. This data is competitive with current levels on the international market. It also demonstrates that the challenging goal of this R&D project has to a great extent been already achieved."
Dr. Claus Ehrenbeck
Aixtron AG
Tel: +49 241 8909 444
Fax: +49 241 8909 445
E-mail: C.Ehrenbeck@aixtron.com
Web site: http://www.aixtron.com
