本文選題：氧化鋅 + 金屬氧化物�。� 參考：《傳感技術(shù)學(xué)報(bào)》2016年06期

【摘要】：采用溶膠凝膠法制備的Al摻雜ZnO納米粉末(AZO)。利用X射線衍射(XRD)和掃描電子顯微鏡(SEM)表征樣品的晶體結(jié)構(gòu)和表面形貌。采用浸漬提拉法將該樣品制成旁熱式氣體傳感器,檢測其對不同氣體的響應(yīng)恢復(fù)特性。結(jié)果表明:Al摻雜ZnO表面粗糙,Al的摻雜能夠抑制ZnO晶粒增長。當(dāng)工作溫度為70℃、濕度為27%RH時(shí),4.98wt.%Al摻雜ZnO對丙酮?dú)怏w具有很好的選擇性,電阻靈敏度達(dá)到了14 075,響應(yīng)和恢復(fù)時(shí)間分別為1 s和3 s。紫外光照射可明顯提高傳感器的氣敏特性,并降低工作溫度。
[Abstract]:Al doped ZnO nano-powders were prepared by sol-gel method. The crystal structure and surface morphology of the samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The para-thermal gas sensor was made by dipping Czochralski method, and its response and recovery characteristics to different gases were tested. The results show that the doping of coarse Al on the surface of ZnO can inhibit the growth of ZnO grains. When the working temperature is 70 鈩，

本文編號：1906530