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Simple and Green Synthesis of Lead Sulfide Nanocrystals for Hybrid Bulk Hetero-Junction Solar Cells

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High quality PbS nanocrystals (NCs) were successfully synthesized through a facile, inexpensive and reproducible hot injection method using low-cost and less-injurious thioacetamide (TAA) as a sulfur source in the presence of oleylamine (OLA) and oleic acid (OA). The as-synthesized PbS NCs showed strong absorption and photoluminescence (PL) emission in the near-infrared region. The size of the PbS NCs was easily controlled in the range, 3.8∼6 nm by varying the reaction conditions such as reaction temperature (RT), OLA/OA ratio, and Pb/S ratio. Larger sizes of PbS NCs were obtained at higher RT, and lower OLA/OA ratio, and Pb/S ratio values. The developed PbS NCs in the present study have potential application in the fabrication of solar cells.
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Keywords: BLUE SHIFT; GREEN SYNTHESIS; HOT-INJECTION; NANOCRYSTAL; THIOACETAMIDE

Document Type: Research Article

Publication date: March 1, 2016

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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