期刊
CERAMICS INTERNATIONAL
卷 42, 期 14, 页码 15209-15216出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.06.155
关键词
Nanocomposites; Optical properties; PbS/rGO; NIR detector; Solar-cells
资金
- Islamic Azad University Masjed-Soleiman Branch
The effect of annealing temperature on photovoltaic and near-infrared (NIR) detector applications of PbS nanoparticles (NPs) and PbS/graphene nanocomposites was investigated. The products were synthesized by a simple co-precipitation method and graphene oxide (GO) sheets were used as graphene source. Several characterization techniques were used to show transfer of the GO into reduced graphene oxide (rGO) during the synthesis process. In addition, the effect of graphene concentrations on morphology, structure, photovoltaic, and detector parameters of the samples were studied. Transmission electron microscope (TEM) images showed that, the PbS NPs were agglomerated, while, the PbS/rGO nano composites were dispersed completely after annealing under H-2/Ar gas atmosphere. UV-visible spectrometer showed an absorption peak for all samples in the near infrared red (NIR) region of the electromagnetic spectrum. The results indicated that, photocurrent intensity, responsivity of the samples to an NIR source, and solar-cell efficiency were affected by annealing of samples and graphene concentrations. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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