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4 May 2018 Influence of the surface ligands on the optical and electrical properties of PbS QD solids
Mariya A. Zvaigzne, Alexey E. Aleksandrov, Yaroslav Goltyapin, Alexey R. Tameev, Alexander A. Chistyakov
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Proceedings Volume 10672, Nanophotonics VII; 1067235 (2018) https://doi.org/10.1117/12.2306912
Event: SPIE Photonics Europe, 2018, Strasbourg, France
Abstract
We studied the influence of the ligands on the optical properties of PbS QD solids using the photoluminescence spectra and the kinetics of photoluminescence decay. As the ligand molecule length decreases, the photoluminescence decay becomes faster, which in a good agreement with the theory of the hopping mechanism of charge transfer in QD solids. We also fabricate photovoltaic structures (ITO/PEDOT:PSS/PbS/ZnO/Al) based on PbS QD solids and investigate the influence of various organic ligand molecules on its photovoltaic characteristics. The maximum efficiency was observed in samples with a ligand of intermediate length.
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Mariya A. Zvaigzne, Alexey E. Aleksandrov, Yaroslav Goltyapin, Alexey R. Tameev, and Alexander A. Chistyakov "Influence of the surface ligands on the optical and electrical properties of PbS QD solids", Proc. SPIE 10672, Nanophotonics VII, 1067235 (4 May 2018); https://doi.org/10.1117/12.2306912
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KEYWORDS
Luminescence
Photovoltaics
Solar energy
Quantum dots
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