LED technology initiates in the same art of engineering that gave us mobile phones, computers and all modern electronics equipment based on quantum phenomena. Extending semiconductor devices to new compounds has produced great benefits to human life, as exemplified by modern optoelectronic and high-speed electronic devices for communications attained by Zinc Oxide, Blue LED etc. Engineers use a blue LED to excite some kind of fluorescent chemical in the bulb. That converts the blue light to white light. To harvest these advantages in real devices, a reliable technique for fabricating p-type doping needs to be established. Zinc oxide has substantial advantages including large exciton binding energy, as demonstrated by efficient excitonic lasing on optical excitation.In this book, the optical properties of undoped Zinc Oxidewere observed by experimenting with various substrate temperatures with Mist Chemical Vapor Deposition (Mist-CVD) technique.
Prof. Dr. Hla Myo Tun received B.E.(Electronics) and PhD. (Electronic Engineering) degrees from Mandalay Technological University in 2002 and 2008, respectively. He received his master degree from Yangon Technological University in 2003. Prof. Dr. Hla Myo Tun is the Head of Department of Electronic Engineering of Yangon Technological University.