Abstract
Organic–inorganic lead halide perovskites have witnessed phenomenal success in the field of optoelectronics. Here, pure as well as indium (In)-doped methylammonium lead chloride (CH3NH3PbCl3) perovskite powders have been effectively synthesized for different atomic concentrations (at%) of In (0%, 10%, and 20%). The structural, optoelectronic, morphological, and elemental properties of as-prepared powders have been systematically investigated. Synthesized CH3NH3PbCl3 powders are cubic phase in nature and there is a rising trend of lattice constants and lattice volume with increasing amount of In doping. The small quantity of In (10%) enhances the surface morphology in terms of homogeneous surface and less pinhole defects, compared to pure lead perovskite. The doped perovskites depict broad peak in the ultra violet region of solar spectrum and causes enhanced peak intensities in the same region. The photoluminescence spectra indicate that 10% In-doped perovskite has higher crystallinity and lesser nonradiative recombination than 20% In-doped counterpart. This work delivers brief understanding for exploring the properties of In-doped perovskites and their potential as an optoelectronic material.
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Acknowledgements
The authors are extending their gratitude to the SAIF, Department of Instrumentation & USIC, Gauhati University for XRD analysis and to the Department of Chemistry, National Institute of Technology, Silchar for providing fluorescence spectrophotometer facility. Sincere thanks to SAIF, IIT Bombay for FESEM analysis along with EDS. The authors are thankful to Prof. Sivaji Bandyopadhyay, Director, National Institute of Technology, Silchar for his continuous support in conducting this work.
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Sarkar, P., Mazumder, J., Tripathy, S.K. et al. Structural, optoelectronic, and morphological study of indium-doped methylammonium lead chloride perovskites. Appl. Phys. A 125, 580 (2019). https://doi.org/10.1007/s00339-019-2877-1
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DOI: https://doi.org/10.1007/s00339-019-2877-1