Abstract We report a study on the infrared optical emission of Er3+ inserted on ZnO hosts. The doping process was carried out during the growth of thin films by spray pyrolysis. The precursor solutions consisted of zinc acetate and erbium chloride proportionally diluted in distilled water, producing films in a clean and cost-effective process. The different molarity conditions employed here, M=10−3 and M=10−1, provided the growth of high textured c-axis, optical transparent ZnO, and white powder-like ZnO films, respectively. The infrared emissions at 0.8 eV (1.5 μm) are affected by the level manifolds due to the Stark effect, which is found to be strongly dependent on synthesis parameters. Lower crystallinity implies mitigation of the strong electric field in c-direction, reducing the intensity of the splitting caused by Stark effect.

中文翻译：

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在掺铒的 ZnO 薄膜的 1.54 µm 发射中调整斯塔克效应

摘要 我们报告了插入到 ZnO 主体上的 Er3+ 的红外光发射的研究。掺杂过程是在薄膜生长过程中通过喷雾热解进行的。前体溶液由在蒸馏水中按比例稀释的醋酸锌和氯化铒组成，以清洁且具有成本效益的工艺生产薄膜。这里采用的不同摩尔浓度条件，M=10-3 和 M=10-1，分别提供了高纹理 c 轴、光学透明 ZnO 和白色粉末状 ZnO 薄膜的生长。由于斯塔克效应，0.8 eV (1.5 μm) 处的红外发射受到能级流形的影响，这被发现强烈依赖于合成参数。较低的结晶度意味着 c 方向强电场的减弱，从而降低了斯塔克效应引起的分裂强度。