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Small built-in electric fields in quaternary InAlGaN heterostructures

机译:四元InAlGaN异质结构中的小型内置电场

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A study of light emission of InAlGaN based multi quantum wells (with different well widths) has been performed by means of hydrostatic pressure and time resolved measurements. Both techniques are very sensitive to the presence of the large internal electric fields in hexagonal InGaN/GaN and GaN/AlGaN heterostructures. In the present studies. we found that independently of the quantum well width the pressure shift of the light emission energy and the photoluminescence decay time show almost constant values. This observation is interpreted as an evidence of the lack of built-in electric field in the used quaternary quantum wells. [References: 8]
机译:已经通过静水压力和时间分辨测量对基于InAlGaN的多量子阱(具有不同的阱宽度)的发光进行了研究。两种技术都对六角形InGaN / GaN和GaN / AlGaN异质结构中大的内部电场的存在非常敏感。在目前的研究中。我们发现,与量子阱宽度无关,发光能量的压力位移和光致发光衰减时间显示出几乎恒定的值。该观察结果被解释为所用四元量子阱中缺乏内置电场的证据。 [参考:8]

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