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Synthesis, Morphology Control and Iodide Passivation of PbSe Quantum Rods

Publish Year: 1397
Type: Conference paper
Language: English
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Document National Code:

IMES12_274

Index date: 1 May 2019

Synthesis, Morphology Control and Iodide Passivation of PbSe Quantum Rods abstract

Synthesis of PbSe nanoparticles (NPS) and effect of tris(diethylamino)phosphine selenide (TDPSe) on the growth of NPs are studied in this paper. TEM micrographs of synthesized NPs at different conditions indicated that presence of free TDPSe and strict drying the precursors are critical for synthesis of rod-like NPs. Single-crystalline PbSe NRs were synthesized through oriented attachment mechanism. FTIR spectra confirms presence of organic bonds related to the oleic acid on the surface of synthesized PbSe NPs. Synthesized QRs were subsequently passivated with TBAI. This process lead to more oxidation stability of NPs and their increased quantum yield. An enhanced (200) XRD peak can be understood in terms of NR growth in favored direction and subsequent alignment on the substrate.

Synthesis, Morphology Control and Iodide Passivation of PbSe Quantum Rods Keywords:

Synthesis , PbSe quantum rod , Transmission electron microscopy (TEM)

Synthesis, Morphology Control and Iodide Passivation of PbSe Quantum Rods authors

Hossein Beygi

PhD in materials science and metallurgical engineering

Jeff Young

Professor in physics, Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada V۶T ۱Z۱

Frank C.J.M Van Veggel

Professor in chemistry, Department of Chemistry, University of Victoria, Victoria, British Columbia, Canada V۸W ۳V۶

Mohammad Pelaschi

PhD student in mechanical engineering, Department of Mechanical Engineering, University of Victoria, Victoria, British Columbia, Canada V۸W ۳V۶