Journal of Electronic Materials ( IF 2.2 ) Pub Date : 2021-07-15 , DOI: 10.1007/s11664-021-09074-5 R. B. Tailor 1 , P. B. Patel 1 , H. N. Desai 1
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Abstract
A nanocomposite of \(\hbox {Cu}_{1.96}\)S:PVA has been synthesized by a simple solvent method. This nanocomposite material is characterized using analytical techniques, such as scanning electron microscopy, energy dispersive analysis of X-rays, X-ray diffraction (XRD), optical absorption spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, zeta potential, and temperature-dependent current-voltage characteristics. The XRD spectrum confirms the tetragonal structure of the \(\hbox {Cu}_{1.96}\)S:PVA nanocomposite. The value of band gap (1.35 eV) indicated a quantum confinement effect of the synthesized nanocomposite. The particle size was 15.04 nm and 13.40 nm, as determined by XRD and mass effective model, respectively. The capping of PVA with \(\hbox {Cu}_{1.96}\)S nanoparticles was confirmed by the FTIR spectrum. The zeta potential of the nanocomposite was − 12.8 mV, indicating a threshold of agglomeration. The activation energies were 0.14 eV, 0.11 eV, and 1.05 eV for ionization, extrinsic, and intrinsic conduction processes, respectively. A human breath monitor sensor and pressure sensor have been fabricated and studied for various conditions using a \(\hbox {Cu}_{1.96}\)S:PVA/PU sponge.
Graphic Abstract
中文翻译：
用于呼吸监测和压力传感应用的 $$\hbox {Cu}_{1.96}$$ Cu 1.96 S:PVA 纳米复合材料的合成
摘要
\(\hbox {Cu}_{1.96}\) S:PVA纳米复合材料已通过简单的溶剂法合成。这种纳米复合材料使用分析技术进行表征，例如扫描电子显微镜、X 射线能量色散分析、X 射线衍射 (XRD)、光吸收光谱、傅里叶变换红外 (FTIR) 光谱、zeta 电位和温度-相关的电流-电压特性。XRD 谱证实了\(\hbox {Cu}_{1.96}\) S:PVA 纳米复合材料的四方结构。带隙值 (1.35 eV) 表明合成纳米复合材料的量子限制效应。通过XRD和质量有效模型测定的粒径分别为15.04 nm和13.40 nm。PVA 用\(\hbox {Cu}_{1.96}\)封顶S纳米颗粒通过FTIR光谱证实。纳米复合材料的 zeta 电位为 - 12.8 mV，表明聚集阈值。电离、外在和本征传导过程的活化能分别为 0.14 eV、0.11 eV 和 1.05 eV。已经使用\(\hbox {Cu}_{1.96}\) S:PVA/PU 海绵制造并研究了人体呼吸监测器传感器和压力传感器在各种条件下的应用。
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