LED 2 From Compound semiconductor magazine LED n
- Slides: 38
目前高亮度LED的應用 2 From: Compound semiconductor magazine 中國科技大學 科技與生活
高亮度LED的優點 n n n n 3 Energy saving Long lifetime Low cost Small volume Luminosity could be controlled Easily integrated with electrical circuit Other applications; such as communication 中國科技大學 科技與生活
LED 的應用 — 照明 n Traditional lighting system: q q n New lighting system q q 4 Incandescent 白熾燈泡 Gas discharge 氣體放電發光源(日光燈管, HID氙氣燈泡) Light Emitting Diode (LED) Light Emitting Polymer (LEP) 中國科技大學 科技與生活
LED 的應用 — 光纖通訊 650 nm - POF 850 nm High Speed Fiber Optics LED RCLEDs Next Generation 850 nm High Power Fiber Optics LED Single Fiber Duplex Module -1310/850 nm LED & 850/1310 nm PIN 1310 nm EE&SE LED 6 中國科技大學 科技與生活
LED 的元素組成 III-V family: Ga. As, In. P, Ga. N, In. As, In. Sb… II-IV family: Zn. Se, Cd. Se, Hg. Te… 通稱「化合物半導體」( Compound 11 Semiconductor) 中國科技大學 科技與生活
The electro-hole recombination energy light 12 No bias Applied bias 中國科技大學 科技與生活
LED Substrate and Compound 所有化合物半導體都必須成長在適合的基板Substrate。目前 常用的 LED 基板依波長常用的有 Ga. As 和 Sapphire。 In. Ga. Al. P - an alloy of In. P, Ga. P and Al. P ( “in galp”) Al. In. Ga. P (“al in gap”) • Ga. N - gallium nitride • In. Ga. N - an alloy of In. N and Ga. N • Al. Ga. N - and alloy of Al. N and Ga. N • NITRIDES - all of the above 14 Sapphire 中國科技大學 科技與生活
MOCVD – Metal organic chemical vapor deposition ◎AIXTRON Planetary reactor® 18 中國科技大學 科技與生活
How to extract the light ? Wafer bonding: transparent substrate (TS) 25 中國科技大學 科技與生活
What is the duty of facility engineer? 29 中國科技大學 科技與生活
The market for white LED Market for white LEDs (phosphor-converted or multichip RGB devices) driven by a current greater than 50 m. A. Credit: Osram Opto Semiconductors. 32 中國科技大學 科技與生活
The patent and cost of each fabrication of white LED 35 中國科技大學 科技與生活
參考資料 n n n 38 “kingmax-opto” website “MSE, UCSB” website “EMCORE” website “AXITRON” website “AXT” website 中國科技大學 科技與生活
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- Simple compound complex rules
- Compound predicates examples
- Simple compound complex and compound-complex sentences quiz
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