In this work, the different physical and optical properties of spray coated nanostructured Sn_1-xSm_xO₂ (x = 0.0 to 0.1) films were analyzed using various characterization techniques. All the films exhibited tetragonal structure with (1 1 0) as the prominent plane. The doping in general reduced the crystalline nature of the films along with narrowing of the bandgap values. Among the doped films, the most transmitting film was the 2 at.% Sm doped film, whereas the most crystalline was the 7 at.% Sm doped film. The fibrous morphology changed to distinct grains with the increase in Sm concentration. The oxidation states of the constituent elements were confirmed using X-ray photoelectron spectroscopy (XPS). The photoluminescence (PL) intensity was influenced by doping and emissions corresponding to the host SnO₂ lattice were observed in the UV and visible regions. The PL emissions corresponding to the Sm ion transitions could not be found in the spectra. All the films exhibited third-order nonlinear optical nature with reverse saturable absorption. The suitability of these films as optical limiting material was identified. The magnitude of third-order nonlinear susceptibility χ⁽³⁾ was also estimated to be in the range of 10⁻³-10⁻² esu and the least optical limiting threshold was shown by Sn_0.93Sm_0.07O₂ films.

在这项工作中，喷涂纳米结构 Sn _1-x Sm _x O _{2的不同物理和光学性质}(x = 0.0 至 0.1) 薄膜使用各种表征技术进行分析。所有薄膜均呈现四方结构，以 (1 1 0) 为突出面。掺杂通常会降低薄膜的结晶性质以及带隙值变窄。在掺杂薄膜中，透射率最高的薄膜是 2 at.% Sm 掺杂薄膜，而结晶度最高的是 7 at.% Sm 掺杂薄膜。随着 Sm 浓度的增加，纤维形态变为明显的晶粒。使用X射线光电子能谱(XPS)确认构成元素的氧化态。光致发光 (PL) 强度受对应于主体 SnO _{2的掺杂和发射的影响}在紫外和可见光区域观察到晶格。在光谱中找不到对应于 Sm 离子跃迁的 PL 发射。所有的薄膜都表现出具有反饱和吸收的三阶非线性光学性质。确定了这些薄膜作为光学限制材料的适用性。三阶非线性磁化率 χ ⁽³⁾的大小也估计在 10 ^-3 -10 ^-2  esu 的范围内，并且最小光学限制阈值由 Sn _0.93 Sm _0.07 O ₂薄膜显示。