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士賢 asked in 科學其他:科學 · 1 decade ago

晶界 ( grain boundary)

請問有材料專長的高手们

可以介紹一下晶界 ( grain boundary)嗎

如有參考文獻(word, ppt, pdf)會更好

另外就是它的可應用在那

請舉例說明好嗎?

1 Answer

Rating
  • 傳說
    Lv 4
    1 decade ago
    Favorite Answer

    晶粒邊界 Grain Boundary。

    指多晶體內,各個晶粒間互相接觸的部份。

    看圖片比較清楚啦

    http://www.tf.uni-kiel.de/matwis/amat/def_en/kap_7...

    http://www.process-evolution.com/images/rough144.j...

    他只是一個現象...不能說有什麼應用...

    基本上它算是一個不好的結果...

    當晶圓或薄膜晶體經過製程技術生成時...

    都會希望他是單晶的型態...

    grain boundary就是缺陷的存在...

    晶體會有線缺陷或者破裂面在grain boundary形成...

    以LED來說的話...grain boundary形成缺陷困住激子..

    則那個區域將不發光....

    以矽晶圓來說的話...缺陷部分導電特性將不佳...

    容易過熱燒毀...

    Source(s): 傳說
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