CuPc/ZnO杂化材料的气敏性能研究

摘要

In order to improve the gas sensing property of the organic semiconductor material CuPc, CuPc/ZnO hybrid materials containing different amounts of ZnO were prepared using the solution method. The prepared CuPc/ZnO hybrid materials were characterized with XRD, SEM and other instruments, while their gas sensing properties were also studied. The results show that the CuPc/ZnO hybrid material containing 10% (mass fraction) ZnO shows the best sensitivity to Cl2; Compared with CuPc, its sensitivity to Cl2 with a volume fraction of 10×10-6 increases by 179% at 175 °C which is the optimal working temperature of this material; This material also exhibits a good sensitivity to Cl2 with a lower concentration, for example, its sensitivity to Cl2 with a volume fraction of 1×10-6 is 5.3 at 175 ℃. CuPc/ZnO hybrid materials show good selectivity and response characteristics to Cl2, but their recovery time is relatively long.%为了改善有机半导体材料CuPc的气敏性能,采用溶液法制备了含有不同量ZnO的CuPc/ZnO杂化材料.利用SEM、XRD等测试手段对所制CuPc/ZnO杂化材料进行了表征,并研究了其气敏性能.结果表明:当质量分数w(ZnO)为10％时,CuPc/ZnO杂化材料对Cl2的灵敏度最佳；与未杂化的CuPc相比,其在175℃的最佳工作温度下对体积分数为10×10-6的Cl2的灵敏度提高了1.79倍；另外,该材料对更低浓度的Cl2也具有良好的响应,在175℃温度下,其对体积分数为1×10-6的Cl2的灵敏度为5.3；CuPc/ZnO杂化材料对Cl2具有良好的选择性和响应特性,但恢复时间较长.