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Nanoindentation C-&A-oriented GaN thin films Indentation stress 整理成

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Presentation on theme: "Nanoindentation C-&A-oriented GaN thin films Indentation stress 整理成"— Presentation transcript:

1 Nanoindentation C-&A-oriented GaN thin films Indentation stress 整理成
FIB fab. C-&A-oriented GaN pillars Indentation strain 公式參考 JAP 101 (2007) PRB 77 (2008) (不同直徑) 除了機械性質的比較之外,可能可以探討:尺寸與幾何效應。

2 compression Optical tests—ex: PL, CL, Raman..etc 比較前後
If peak is shifted.. defect/dislocation induced ?!..or.. blue/red shift ?!.. intensity decay ?!..dep. on strain rate ?! maybe some relations can be explained these ?! 比較前後 NEED TEM analysis 進一步用TEM分析來找到合理的解釋。 How differences exhibit in C-&A-oriented GaN materials ?


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