Abstract The influence of Cr doping on optical, morphological and electron transport properties of ZnO nanorods were studied. High crystalline wurtzite ZnO nanorods were prepared by the reflux method and the structural properties were studied from X-Ray diffraction (XRD) pattern. Morphological analysis was done by field emission scanning electron microscopy (FESEM), transmission electron microscopy (HRTEM). The FESEM and HRTEM results show the size reduction from micrometer to nanometer regime with the addition of Cr doping. The optical properties were studied from absorption spectra. The enhancement in absorption band with the addition of Cr doping is observed. The enhancement of NBE and Green emission of ZnO with the addition of Cr doping was analyzed from fluorescence spectra. The electronic state of Zn, O was confirmed from X-Ray photoelectron spectroscopy. The additional peak around 570–590 eV confirms the chromium doping in the Zn sites. The enhancement in photoconductivity of ZnO nanorods with the addition of Cr doping is observed from the IV measurements.

中文翻译：

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Cr掺杂纤锌矿ZnO晶体纳米棒的增强紫外光电探测行为

摘要 研究了Cr掺杂对ZnO纳米棒光学、形貌和电子传输性能的影响。通过回流法制备了高结晶纤锌矿ZnO纳米棒，并从X射线衍射（XRD）图谱研究了其结构特性。通过场发射扫描电子显微镜（FESEM）、透射电子显微镜（HRTEM）进行形态分析。FESEM 和 HRTEM 结果表明，随着 Cr 掺杂的加入，尺寸从微米减小到纳米范围。从吸收光谱研究光学性质。观察到添加 Cr 掺杂后吸收带的增强。从荧光光谱分析了添加 Cr 掺杂对 NBE 和 ZnO 绿光发射的增强。Zn 的电子态，O 由 X 射线光电子能谱证实。570-590 eV 附近的附加峰证实了 Zn 位点中的铬掺杂。从 IV 测量中观察到添加 Cr 掺杂后 ZnO 纳米棒的光电导率增强。