Effects of confined donor states on the optical and transport properties of ordered GaInP2 alloys.
Effects of confined donor states on the optical and transport properties of ordered GaInP2 alloys.
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DOI：
10.1103/physrevb.48.7889
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发表时间：
1993-09
期刊：
影响因子：
--
通讯作者：
Driessen;Bauhuis;Olsthoorn;Giling
中科院分区：
文献类型：
--
作者：
Driessen;Bauhuis;Olsthoorn;Giling
我们通过光反射率（PR）、光致发光（PL）和Hall-van - der - Pauw测量的组合，报告了长程有序gainp2合金作为温度函数的性质。在T= 200k以下，光学和输运性质受到施主态的强烈影响，施主态由于在有序畴中的约束，具有36mev的大结合能。当温度<30 K时，获得了强局域化的证据：在发生PL发射的相同能量处，PR光谱显示出明显的一阶导数线形，电导率以跳频（e3）传导为主，PL强度的温度依赖性与局域态一致
We report properties of long-range-ordered GaInP 2 alloys as a function of temperature by a combination of photoreflectance (PR), photoluminescence (PL), and Hall-van der Pauw measurements. Below T=200 K the optical and transport properties are strongly influenced by a donor state, which, owing to confinement in the ordered domains, has a large binding energy of 36 meV. Evidence for strong localization was obtained for T<30 K: the PR spectra showed a pronounced first-derivative line shape at the same energy where PL emission occurs, the conductivity was dominated by hopping (e 3 ) conduction, and the temperature dependence of the PL intensity was consistent with localized states