以ZnO纳米粉(平均粒径30 nm)和Fe2O3,纳米粉(平均粒径90 nm)为原料,利用传统的厚膜气敏传感器制备工艺,制备了纯ZnO多孔纳米固体厚膜气敏传感器和掺杂Fe2O3(掺杂量为1wt%,2wt%和5wt%)的ZnO厚膜气敏传感器.分别测试了这四种厚膜气敏传感器的本征电阻(传感器在空气中的电阻值)及其对乙醇,汽油,丙酮,对二甲苯,氢气,甲烷和CO敏感特性.结果表明:当工作温度在较低时,Fe2O13,的掺杂可明显降低ZnO多孔纳米固体厚膜气敏传感器的本征电阻,并提高其工作稳定性,而适量Fe2O3的掺杂可以提高ZnO多孔纳米固体厚膜气敏传感器对乙醇蒸气和汽油的灵敏度.结合对传感器厚膜的显微结构分析结果,我们对出现上述差异的原因进行了初步讨论.
参考文献
| [1] | Yoon D;Choi G .Microstructure and CO gas sensing properties of porous ZnO produced by starch addition[J].Sensors and Actuators B:Chemical,1997,45:251-257. |
| [2] | Hyun-Wook Ryu;Bo-Seok Park;Sheikh A. Akbar;Woo-Sun Lee;Kwang-Jun Hong;Youn-Jin Seo;Dong-Charn Shin;Jin-Seong Park;Gwang-Pyo Choi .ZnO sol-gel derived porous film for CO gas sensing[J].Sensors and Actuators, B. Chemical,2003(3):717-722. |
| [3] | Takeo Hyodo;Shunji Abe;Yasuhiro Shimizu;Makoto Egashira .Gas-sensing properties of ordered mesoporous SnO_2 and effects of coatings thereof[J].Sensors and Actuators, B. Chemical,2003(1/3):590-600. |
| [4] | Hyodo T.;Nishida N.;Shimizu Y.;Egashira M. .Preparation and gas-sensing properties of thermally stable mesoporous SnO2[J].Sensors and Actuators, B. Chemical,2002(1/3):209-215. |
| [5] | Park Sung-Hyun;Ryu Jee-Youl;Choi Hyek-Hwan et al.Zinc oxide thin film doped with Al2 O3,TiO2 and V2O5 as sensitive seusor for trimethylamine gas[J].Sensors and Actuators B:Chemical,1998,46:75-79. |
| [6] | N. Jayadev Dayan;S. R. Sainkar;R. N. Karekar;R. C. Aiyer .Formulation and characterization of ZnO:Sb thick-film gas sensors[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,1998(1/2):254-258. |
| [7] | Hongyan Xu;Xiulin Liu;Mei Li et al.Preparation and characterization of TiO2 bulk porous nanosolid[J].Materials Letters,2005,59:1962-1966. |
| [8] | Xu HY;Liu XL;Cui DL;Li M;Jiang MH .A novel method for improving the performance of ZnO gas sensors[J].Sensors and Actuators, B. Chemical,2006(1):301-307. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%