Influence of substrate temperature on certain physical propertiesand antibacterial activity of nanocrystalline Ag-doped In$_2$O$_3$ thin films

Pramana

P DEEPA¹  P PHILOMINATHAN1¹ 

[1] PG and Research Department of Physics, A.V.V.M. Sri Pushpam College, Poondi 613 503, Thanjavur, India$$

关键词: AIO thin films;    spray pyrolysis;    biological application;    electrical properties;    scanning electronmicroscopy;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Nanocrystalline Ag-doped indium oxide (AIO) thin films, by employing a much simplified spraypyrolysis technique in different substrate temperatures (300, 350, 400 and 450$deg$ C), were fabricated for the firsttime. The deposited films were subjected to various characterization studies, to explore certain features like theinfluence of various deposition temperatures on physical and antibacterial properties. XRD results showed thatall the samples exhibited preferential orientation along the (2 2 2) plane. The variation in the crystalline sizewith increasing substrate temperature was explained on the basis of the Zener pinning effect. The electrical sheetresistance ($R_{sh}$) was found to decrease sharply with increasing substrate temperature and attained a minimumvalue (62$Omega$/$square$) at 400$deg$C and then started increasing for higher deposition temperatures. Further, PL emissionspectra of the samples in the visible range ascertained the possibility of applicability of the same in nanoscaleoptoelectronic devices. From the studies, it was found that at 400.C deposition temperature, one could expectbetter antibacterial efficiency against {it Escherichia coli}. The influence of the shape and size of AIO nanograins onthe antibacterial activity was analysed using scanning electron microscopy images.

【 授权许可】

Unknown