功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2012年
11期
1455-1458
,共4页
甘平%辜敏%卿胜兰%鲜晓东
甘平%辜敏%卿勝蘭%鮮曉東
감평%고민%경성란%선효동
碲基复合薄膜%原子力/扫描探针显微镜%表面电势%电容梯度
碲基複閤薄膜%原子力/掃描探針顯微鏡%錶麵電勢%電容梯度
제기복합박막%원자력/소묘탐침현미경%표면전세%전용제도
tellurium-based composite films%AFM/SPM%surface potential%capacitance gradient
分别采用AFM和原子力/扫描探针显微镜(AFM/SPM)在纳米尺度下对碲基复合(Te/TeO2-SiO2)薄膜的表面电势、电容梯度等电学特性进行测量。测试结果表明控制电压为-0.8V,反应时间为200s条件下制备的碲基复合薄膜的表面电势差达到700mV,相对介电常数小于以硅为主要成分的衬底相对介电常数。利用光谱分析,碲基复合薄膜的禁带宽度约为3.14eV。
分彆採用AFM和原子力/掃描探針顯微鏡(AFM/SPM)在納米呎度下對碲基複閤(Te/TeO2-SiO2)薄膜的錶麵電勢、電容梯度等電學特性進行測量。測試結果錶明控製電壓為-0.8V,反應時間為200s條件下製備的碲基複閤薄膜的錶麵電勢差達到700mV,相對介電常數小于以硅為主要成分的襯底相對介電常數。利用光譜分析,碲基複閤薄膜的禁帶寬度約為3.14eV。
분별채용AFM화원자력/소묘탐침현미경(AFM/SPM)재납미척도하대제기복합(Te/TeO2-SiO2)박막적표면전세、전용제도등전학특성진행측량。측시결과표명공제전압위-0.8V,반응시간위200s조건하제비적제기복합박막적표면전세차체도700mV,상대개전상수소우이규위주요성분적츤저상대개전상수。이용광보분석,제기복합박막적금대관도약위3.14eV。
The surface potential and capacitance gradient were characterized by AFM/SPM in nano-scale.The results showed that the maximum contact potential difference was about 700mV,the relative dielectric constant of tellurium-based composite particles was smaller than the relative dielectric constant of substrate with silicon as the main component when control voltage is-0.8V in reaction time of 200s.The optical band gap was estimated to be 3.14eV by spectrum.