武怡
,
高斐
,
刘生忠
,
马笑轩
,
王浩石
,
宋飞莺
,
陈彦伟
材料导报
利用化学浴沉积法在玻璃衬底上50℃沉积3h制备硫化铅(PbS)纳米晶薄膜.将得到的PbS薄膜在300℃氮气中进行不同时间(0～120min)的退火.利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、原子力显微镜(AFM)和紫外-可见-近红外分光光度计对PbS薄膜的结构和光学特性进行研究.PbS薄膜在玻璃基底上粘附力较强,结晶度良好,呈面心立方结构且沿(111)方向择优生长.不同的退火时间导致PbS薄膜的结构、形貌、光学特性均产生明显差异.退火30 min的PbS薄膜的结晶度最好,其带隙变化范围为0.90～1.70 eV.
关键词:
PbS薄膜
,
化学浴沉积
,
薄膜结构
,
光学特性
J.Koh
,
B.Kim
材料科学技术（英文）
We present a brief review about recent results regarding carbon nanotube (CNT)-based chemical and biomole-cular sensors. For the fabrication of CNT-based sensors, devices containing CNT channels between two metal electrodes are first fabricated usually via chemical vapor deposition (CVD) or “surface programmed assembly” method. Then, the CNT surfaces are often functionalized to enhance the selectivity of the sensors. Using this process, highly-sensitive CNT-based sensors can be fabricated for the selective detection of various chemical and biological molecules such as hydrogen, ammonia, carbon monoxide, chlorine gas, DNA, glucose, alcohol, and proteins.
关键词:
Chemical vapour deposition
,
vapour
,
deposition
,
carbon
,
nanotu
