Fabrication of leaf shaped SnO2 nanoparticles via sol-gel route and its application for the optoelectronic humidity sensor

被引：26

作者：

Kumar, Praveen ^{[1
]}

Khadtare, Shubhangi ^{[2
]}

Park, Jinsub ^{[2
]}

Yadav, B. C. ^{[1
]}

机构：

[1] Babasaheb Bhimrao Ambedkar Univ, Dept Appl Phys, Nanomat & Sensors Res Lab, Lucknow 226025, Uttar Pradesh, India

[2] Hanyang Univ, Dept Elect & Comp Engn, Innovat Compound Semicond & Applicat Lab, Seoul 04763, South Korea

来源：

MATERIALS LETTERS | 2020年 / 278卷

基金：

新加坡国家研究基金会;

关键词：

SnO2; Sol-gel method; Adsorption and desorption; Humidity sensor; GAS; PERFORMANCE; TIN;

D O I：

10.1016/j.matlet.2020.128451

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this report, synthesis of nanostructured SnO2 via sol-gel technique and its application for the detection of humidity level has been studied. Scanning electron microscopy (SEM) micrographs showed the formation of uniform leaf like structured SnO2 nanoparticles. The average crystalline size is discovered as 9 nm calculated by Debye Scherrer's formula using X-ray diffraction (XRD) which shows tetragonal crystal structure. The crystallite size is further confirmed by transmission electron microscopy (TEM). The optical band gap is estimated as 3.63 eV by UV-Visible absorption spectra. The prepared SnO2 based thin film with leaf like structure enhances the feasibility for the detection of humidity, especially in the high range of 65-90 %RH. The prepared SnO2 samples shows good sensitivity towards the relative humidity. It shows 1.8nW/% RH in the humidity range 65-90% RH at 25 degrees C. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：4

共 17 条

[1] The surface and materials science of tin oxide [J].