摘要The spatial luminescence distribution in the ZnO micro-crystallite films deposited on silicon substrates by CVD at room temperature is investigated by the cathedoluminescence (CL) image. It has been observed that the CL image of the samples constitutes a certain pattern. The UV emission pattern projective to the (0001) face of ZnO grains consists of a series of lines nearby the grain boundaries .The included angles between any two adjacent lines are almost 120°. What is more, some luminescent lines form a close hexagon similar to ZnOcrystalline structure. Such a local distribution property shows that the UV emission on as-grown ZnO crystallite should be due to some local defects congregated to {1010} facets of ZnO grain rather than free exciton recombination.
Abstract：The spatial luminescence distribution in the ZnO micro-crystallite films deposited on silicon substrates by CVD at room temperature is investigated by the cathedoluminescence (CL) image. It has been observed that the CL image of the samples constitutes a certain pattern. The UV emission pattern projective to the (0001) face of ZnO grains consists of a series of lines nearby the grain boundaries .The included angles between any two adjacent lines are almost 120°. What is more, some luminescent lines form a close hexagon similar to ZnOcrystalline structure. Such a local distribution property shows that the UV emission on as-grown ZnO crystallite should be due to some local defects congregated to {1010} facets of ZnO grain rather than free exciton recombination.
SHI Yuan-Yuan;TIAN Ke;LIN Bi-Xia;FU Zhu-Xi. Luminescence with Local Distribution and Its Possible Mechanism in Zinc Oxide Micro-Crystallites[J]. 中国物理快报, 2007, 24(8): 2398-2400.
SHI Yuan-Yuan, TIAN Ke, LIN Bi-Xia, FU Zhu-Xi. Luminescence with Local Distribution and Its Possible Mechanism in Zinc Oxide Micro-Crystallites. Chin. Phys. Lett., 2007, 24(8): 2398-2400.
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