شماره ركورد كنفرانس :
3811
عنوان مقاله :
Solution Phase Inorganic Ligand Exchange for Fabrication of Ink Based Quantum Dot Thin Films
پديدآورندگان :
Beygi Hossein beygi@alumni.ubc.ca Department of Materials Science and Metallurgical Engineering/ Engineering Faculty; Ferdowsi University of Mashhad/ Mashhad/ Iran; , Sajjadi Seyyed Abdolkarim Department of Materials Science and Metallurgical Engineering/ Engineering Faculty; Ferdowsi University of Mashhad/ Mashhad/Iran , Babakhani Abolfazl Department of Materials Science and Metallurgical Engineering/ Engineering Faculty; Ferdowsi University of Mashhad/ Mashhad/Iran , Young Jeff F. Department of Physics and Astronomy;University of British Columbia/ Vancouver/ British Columbia/ Canada/ V6T 1Z1 , van Veggel Frank C. J. M. Department of Chemistry; University of Victoria/ Victoria/ British Columbia/ Canada/ V8W 3V6
كليدواژه :
PbS quantum dot , Ligand exchange , Oxidation , Thin film
عنوان كنفرانس :
ششمين كنفرانس بين المللي مهندسي مواد و متالوژي و يازدهمين همايش ملي مشترك انجمن مهندسي متالوژي و مواد ايران و انجمن علمي ريخته گري ايران
چكيده فارسي :
PbS quantum dots are the main part of such cells which absorb the photons, turn it into electron-hole pairs and transferred them to the side electrodes. However, during the application of such structure in air atmosphere, QDs immediately destroyed due to their weak oxidation stability. Surface defects increases the density of nanoparticles surface damages and lead to charge carrier’s recombination, which ultimately reduces the cell s performance. Photoluminescence measurements indicated that solution phase exchange of oleic acid to iodide based ligands improved air exposure oxidation of solid films. FTIR and XRD analyses also confirmed successful ligand exchange process and QDs stability in air. Subsequently, such prepared inks are used to fabricate quantum dot thin films.
