ۼ : 15-03-19 16:51
а ÷ܱ 2015 01/02 : 뺧 ߸ -û LED
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   http://www.kps.or.kr/storage/webzine_uploadfiles/2334_article.pdf [1442]


п ҿ ٹϰ ִ ο ǥϱ ǿ뼺 ȴٸ Ư ϴ ڽ ǥ Ư ۿ ִ.
׷ٸ ̳ Ư ؾ ұ.
ǥ ̸ Ư ´̳ Ȥ Ұ ̸ ϰ ߸ ߸ڷθ ε ⿡ ռ Ư㸦 ؾ ϴ ִ ϱ?



߸ ߸

켱, Ư㸦 䱸Ѵ. ƴ϶ ϱ ؼ Ư ߿ϴ. ̳ ҿ ɻ ǥ Բ Ư㸦 ԽŲ .
, Ư ݰ ȴ. ۿ ü ҳ ⿬ ҿ Ҽӵ ƴ϶ б ߸ õ ̶ κ ߸ Ѵ. ߸ Ǹ ߸ڰ ڽ ̸ Ư㸦 ϰ , ߸ڰ ڽ ߸ ҳ п Ѱִ DZ ׿ 䱸 ִ ̴.
Ư ̳ ε ޸ üǿ ̹Ƿ ڰ ߸ ϼϿ Ư ִ Ǹ Ҽӱ ѱ ڽ Ǹ Ѱ û ִ. κ , Ϻ ݾ ̸ صд. ܰ迡 Ư㰡 Ƿ ũ Ϲ̴.
̳ ⿬ҿ Ư㰡 (óк)ǰų Ư㸦 ̿Ͽ ø() ̴. Ư óк ͱݿ ݾ ϸ ǹǷ ܼϴ. 2000⿡ ߸ ּ 15% ̻ ϵ ϴ ϱ⵵ ߴ.
߸ Ư Ϲް ̸ Ͽ ø 쿡 ؾ ñ ⿩ Ͽ ִ. ݿ 츮 ϱ޽ Ƿ[1] 3ڿ ǽ ǽ÷ ǴѴ. Ư ü ٴ ַ ǽ ̷Ƿ ΰ üǽø ø 쿡 ϴ ̴.


 ߸ Ҽ

ȿ̰ ģȯ û LED ũ ִ ѡ η 2014 뺧л  (Shuji Nakamura, 1954~) 2002 뺧ȭл ٳī ġ(Koich Tanaka, 1959~) ŭ̳ Ư 뺧л ڴ. Ϻ 뺧 볪 밡 ƴ 븦 ߰, Ϻ Ը ߼ұ ̾ٴ ׷.
ִ. ٳī ġ 뺧 ̾ Ŀ ѵ ,  û LED ߷ ׸ ̱ (University of California, Santa Barbara) ѵ, ڽ ٹߴ ġ ȭа(Nichia Corp.) Ư㺸 ޼Ҽ 뺧 ȭ Ҵ 뺧 Ŀ ׸ Ͽ Ư λ .
 [ݵü ]̶ ߸ Ī 1990 10 25 ǿ л ǥ鿡 ݵü Ű Ư㸦 ϰ, 1997 4 18Ͽ ϺƯ 2628404ȣ Ϲ޴´.
Բ 뺧 īŰ ̻繫 (Isamu Akasaki, 1929~) ׷ ׳׽ ε GaN ں (electron beam irradiation) p GaN Ͽ 꼺 ߴ ̴. ǥ ü ü 帧 ηκ о()ü ÿ лϴ Ư㼺 ̴.



404Ư㡯 ѷ Ҽ

Ϻ Ư 2628404 2001⿡  ġƸ Ͽ ݿ Ҹ Ǽҿ ϸ鼭 404Ư㡯 ĪǸ鼭 .
ǼҴ 2004 1 30 ǰῡ, ġưȭ  200 ̄ ϶ ǰߴ.
404Ư㸦 ġưȭ 1,208 ̸̄, Ϳ  ⿩ 50%̹Ƿ 604 ̄ ؾ  200 ̄ ûǷ óб[2] û ̾.
Ϻ ѱ ¦ ߴ ǰ ׷ ׼ҹ Ǽҿ ȭط Ǵµ 84õ ġưȭ ϰ ȴ. 1ɿ 404Ư ϳ ؼ 604 ̄ ġ ߴ ؼ 2ɿ  ġưȭп ߿ Ϲ޾Ҵ Ư 191ǰ 4, ̾ 112 Ư Բ Ǹ ܱ Ưû Ǹ ׶ know-how Ͽ 6 ̄ ϰ, ݾ׿ ȭط Ǵ Ͽ 24õ ߰ ̾.
404Ư㸸 Ͽ ġ õ پ ̾ 1ɿ 1.6%ۿ .
 μ ڵ̿, Ϻ 󡱶 ߴ.
׷ ̷ ġưȭ 忡 ϸ 404Ư 1997 ĺ ʰ ־ ̴. ġưȭ 2ɿ ȭذ 1 2006 3 8Ͽ 404Ư㡯 ⼱ Ѵ. LED ʴ Ư Ḹ ֱ ʰڴٴ ̾.




Ưû ߸ ǥظ ǽó óк ȸ簡 ;׿ â⿡ ߸ ⿩ ٽ ߸ ⿩ ϰ ִ. Ϻ ٸ ʴٴ ̴. ֱ Ƿ[3] ⿡   ǽ ʰ ǽ ʾ ߸ ǽõ 쿡 ߸ ǽϿ ִ ؾ Ѵ١ ǽϱ⵵ ߴ.
 ׸ ÿ ϴٰ ʾҴ û LED ߿ Ͽ. ״ Ư ̲ ȸ ⿩Ͽ ڽ 뺧 ϴ ȴ. ⿡ ȸ簡 Ϻθ   ޾Ƴ Ϻ ⸦ ϵ־. ̷ װ ġưȭп ȹ 191 Ư 112 Ư㰡 ־⿡ ̾.  ׸ ƴϾ.


[1] ߾ 2009. 1. 23 2007101887ǰ.
[2] ڰ û ƴ ׿ Ͽ ǰ Ѵٴ Ģ, λҼ۹ 203 Ǿ ִ. ȿ ڽ ޾ƾ ݾ 604 ̄ û ʰ 200 ̄ ûǷ û 404£ ؼ ǰ .
[3] ߾ 2013. 7. 18 2012501788ǰ.