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Novel synthesis of interconnected nanocubic PbS thin films by facile aqueous chemical route |
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| Authors: | K. V. Khot S. S. Mali N. B. Pawar R. M. Mane V. V. Kondalkar V. B. Ghanwat P. S. Patil Chang Kook Hong Jin Hyeok Kim Jaeyeong Heo P. N. Bhosale |
| Affiliation: | 1. Materials Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, 416004, India 2. Polymer Energy Materials Laboratory, Department of Advanced Chemical Engineering, Chonnam National University, Gwangju, 500-757, South Korea 3. Thin Film Materials Laboratory, Department of Physics, Shivaji University, Kolhapur, 416004, India 4. Photonic and Electronic Thin Film Laboratory, Department of Materials Science and Engineering, Chonnam National University, Gwangju, 500-757, South Korea 5. Nanodevices and Materials for Energy Laboratory, Department of Materials Science and Engineering, Chonnam National University, Gwangju, 500-757, South Korea |
| Abstract: | In the present investigation, we have successfully synthesized lead sulfide (PbS) thin films by using simple, cost effective and facile aqueous chemical route. The effect of deposition time on optical, structural and morphological properties of PbS thin films were investigated by using UV–Vis–NIR absorption spectroscopy, X-ray diffraction (XRD), photoluminescence, field emission scanning electron microscopy (FESEM), high-resolution-transmission electron microscopy (HRTEM), energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The optical band gap energy was varied in the range of 0.96–1.56 eV. The XRD patterns revealed the formation of pure cubic crystal structure. FESEM micrographs demonstrated the conversion of morphology from pyramidal to interconnected nanocubic. HRTEM and selected area electron diffraction (SAED) pattern illustrated that nanoparticles are compact, well interconnected and single crystalline in nature. EDS spectrum confirms that deposited PbS thin films are in good stoichiometry. |
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