衬底电极对SnO_2纳米材料场发射性能的影响

摘要

SnO2 nanomaterials were synthesized by gas-phase oxidation on different substrates,silicon,Au,Cr and stain steel respectively.The morphology of SnO2 were observed by scanning electron microscope（SEM）,and the field emission properties were characterzed.The results show that when current density reaches to 10μA/cm2,the turn-on electric field of Si,Au,Cr and stain steel are 3.6,2.3,2.45,1.7V/μm respectively.The results show that the field emission properties of SnO2 on stain steel substrate takes precedence over others,and SnO2 on Si substrate is lousiest.%采用高温气相氧化法分别在Si、Au、Cr和不锈钢等不同的衬底上生长氧化锡（SnO2）纳米材料,并对SnO2的表面形貌进行表征和场致发射性能测试。研究结果表明,以Si、Au、Cr、不锈钢为衬底,其场致发射的开启电场分别为3.6、2.3、2.45、1.7V/μm。不锈钢衬底电极SnO2阴极的场致发射性能最好,硅衬底电极SnO2阴极的场发射能力最差。