Visible and IR transparent Co-doped SnO2 thin films with efficient electromagnetic shielding performance
Visible and IR transparent Co-doped SnO2 thin films with efficient electromagnetic shielding performance
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DOI：
10.1016/j.jallcom.2019.152480
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发表时间：
2020-01
影响因子：
6.2
通讯作者：
J. Park;Sang-Seok Lee;I. Park
中科院分区：
文献类型：
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作者：
J. Park;Sang-Seok Lee;I. Park
采用超声辅助喷雾热分解沉积法制备了具有电磁屏蔽功能的Co掺杂SnO 2（CTO）透明薄膜。结构和化学研究表明，Co2+离子以置换方式进入SnO 2晶体的Sn 4+晶格位置，Co浓度随Co源含量的增加而增加。掺入的Co离子充当磁性掺杂剂和电受体，以补偿SnO 2中的自由电荷载流子。共掺杂可以调节SnO 2薄膜在1.5-18 GHz频率范围内的电磁屏蔽性能和红外透射率这两个相互矛盾的效率。
Transparent and electromagnetic (EM) shielding Co-doped SnO2(CTO) thin films were fabricated using ultrasonic-assisted spray pyrolysis deposition. Structural and chemical investigations showed that the Co2+ions were substitutionally incorporated into the Sn4+lattice sites of the SnO2crystal and that the Co concentration increased with increasing the Co source content. The incorporated Co ions acted as a magnetic dopant and as an electrical acceptor to compensate for the free charge carriers in SnO2. Co-doping could modulate the two conflicting efficiencies of the EM shielding performance in the frequency range of 1.5–18 GHz and the infrared transmittance of the SnO2thin films.