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Study of defect creation in self assembled ZnO nanostructures with electrically charged nanoparticles

机译:带电纳米粒子自组装ZnO纳米结构中缺陷产生的研究

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摘要

ZnO nanostructures (mainly nanorods) are created by self assembly of uncharged and electrically charged nanoparticles using continuous spray pyrolysis (CoSP) technique. The properties of both nanoparticles and nanostructures are studied in order to understand the role of self assembly. The photoluminescence (PL) spectra show dependence on the growth conditions and annealing atmosphere. The nanostructured films created under voltage have a PL band in green (2.2-2.8 eV) which is absent for nanoparticles created under identical conditions. Thus, even though the nanoparticles involved have different defect states, the self assembly of unpolarized and electrically polarized nanoparticles affects defect creation in ZnO nanostructures.
机译:ZnO纳米结构(主要是纳米棒)是使用连续喷雾热解(CoSP)技术通过自组装不带电和带电纳米粒子而产生的。为了了解自组装的作用,研究了纳米颗粒和纳米结构的性质。光致发光(PL)光谱显示出依赖于生长条件和退火气氛。在电压下产生的纳米结构薄膜具有绿色(2.2-2.8 eV)的PL带,这对于在相同条件下产生的纳米颗粒是不存在的。因此,即使所涉及的纳米颗粒具有不同的缺陷状态,未极化和电极化的纳米颗粒的自组装也会影响ZnO纳米结构中的缺陷产生。

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