The effect of microstructure on the laser-induced transverse voltage in Pb-doped Bi2Sr2Co2Oy thin films on tilted substrates
The effect of microstructure on the laser-induced transverse voltage in Pb-doped Bi2Sr2Co2Oy thin films on tilted substrates
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倾斜基底上 Pb 掺杂 Bi2Sr2Co2Oy 薄膜微结构对激光诱导横向电压的影响
DOI：
10.1007/s00339-012-7366-8
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发表时间：
2013-06
期刊：
影响因子：
--
通讯作者：
Fu Guangsheng
中科院分区：
文献类型：
--
作者：
Yan Guoying;Wang Shufang;Chen shanshan;Liu Fuqiang;Bai Zilong;Wang Jianglong;Yu Wei;Fu Guangsheng
采用化学溶液沉积技术在不同退火温度下在倾斜LaAlO3(001)上制备了Pb掺杂Bi2Sr2Co2Oy薄膜，并利用308 nm脉冲辐射研究了其激光诱导横向电压效应。这些薄膜中激光感应电压的形状很大程度上取决于薄膜的微观结构。晶粒尺寸越大、结晶质量越好的薄膜，其电压信号振幅越大、响应时间越快。实验结果可以用涉及横向热电效应和热电材料输运理论的机制来解释。
Pb-doped Bi2Sr2Co2Oy thin films were prepared on tilted LaAlO3(001) by using the chemical solution deposition technique under different annealing temperatures and its laser-induced transverse voltage effect was investigated by using a 308 nm pulsed radiation. The shape of the laser-induced voltages in these films depended strongly on the film microstructure. Films with a larger grain size and better crystalline quality had a voltage signal with greater amplitude and faster response time. The experimental results can be explained by a mechanism involving the transverse thermoelectric effect as well as the transport theory of thermoelectric materials.
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