Kaur Manjot, Singh Kulwinder, Sharma Ram K, Sharma Nandni, Thakur Anup, Kumar Akshay
University Centre for Research and Development, Chandigarh University, Mohali, 140413, Punjab, India.
Department of Chemistry, University Institute of Sciences, Chandigarh University, Mohali, 140413, Punjab, India.
Heliyon. 2023 Feb 18;9(3):e13865. doi: 10.1016/j.heliyon.2023.e13865. eCollection 2023 Mar.
BN/NiO and Au-loaded BN/NiO nanocomposite films were separately fabricated on the glass substrates for carrier transport and photoconductivity properties. X-ray diffraction pattern of the films show the hexagonal structure of BN and presence of defect states by Nelson Riley factor analysis. Morphological images show spherical shaped particles with highly porous structure. The incorporation of NiO may hindered growth of BN layers and resulted in spherical particles. Temperature-dependent conductivity describes semiconductor transport behaviour for deposited nanocomposite films. Thermal activation conduction with low activation energy (∼0.308 eV) may be responsible for the resulting conductivity. Further, the light intensity dependent photoelectrical properties of BN/NiO and Au-loaded BN/NiO nanocomposites have been explored. The effect of Au nanoparticles loading on enhanced photo-conductivities (∼22% increase) than bare nanocomposite film has been elaborated by proposed mechanism. This study provided the insightful information for carrier transport and photoconductivity of BN-based nanocomposites.
分别在玻璃基板上制备了BN/NiO和负载Au的BN/NiO纳米复合薄膜，以研究其载流子传输和光电导性能。薄膜的X射线衍射图谱显示了BN的六方结构，并通过尼尔森·莱利因子分析表明存在缺陷态。形态图像显示为具有高度多孔结构的球形颗粒。NiO的掺入可能会阻碍BN层的生长，从而形成球形颗粒。与温度相关的电导率描述了沉积纳米复合薄膜的半导体传输行为。低活化能（约0.308 eV）的热活化传导可能是导致电导率的原因。此外，还研究了BN/NiO和负载Au的BN/NiO纳米复合材料的光强依赖性光电性能。通过提出的机制阐述了Au纳米颗粒负载对光导率增强（增加约22%）的影响，相比于裸纳米复合薄膜。这项研究为BN基纳米复合材料的载流子传输和光电导提供了有见地的信息。
