采用化学气相沉积(CVD)方法,在无催化剂的条件下,生长出了锑掺杂的超长、大尺寸ZnO微米线.测试表明微米线的平均长度可达1～2.5 cm,微米线中锑元素的含量约为3.1％(n).此外,将挑选出的单根锑掺杂ZnO微米线以银浆为电极制作成热电发电机,并研究了微米线长度和微米线直径对器件输出性能的影响.研究表明当器件两电极之间的温差为20K且两电极间微米线的长度为1.6 cm时,器件能够输出的最大电压和最大输出功率分别约为36 mV和10.8 nW,微米线的赛贝克系数约为-1.80 mV·K-1.此外,热电器件的输出电压随着微米线长度的增加而增大,随微米线直径的增加而减小.%Large-scale Sb doped ZnO microwire arrays were grown by chemical vapor deposition method without using metal catalyst.The experimental results show that the length of the microwires is about 1～2.5 cm and the Sb concentration in microwires is about 3.1％(n).Moreover,thermoelectric generators were fabricated based on single Sb doped large-scale ZnO microwires.The influence of the length and diameter of microwires on the output characteristics of devices was investigated.Under a temperature difference of 20 K between two electrodes and the length of 1.6 cm,the devices can produce a maximum output voltage of about 36 mV,a maximum output power of about 10.8 nW.The single Sb-doped ZnO microwires show a Seebeck coefficient of about-1.80 mV· K-1.In addition,it is found that the output voltages of the thermoelectric device increase with the microwire length,and decrease with the microwire diameters.
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