Influence of the length of organic molecules of ligands on the PbS QD solids optical properties

7th International Conferences on Physics and Technology of Nanoheterostructure Microwave Electronics: Mokerov Readings 2016;8th International Conferences on Physics and Technology of Nanoheterostructure Microwave Electronics: Mokerov Readings 2017

Goltyapin, Y.V.^1 ; Zvaigzne, M.A.^1 ; Chistyakov, A.A.^1 ; Nikitenko, V.R.^1 ; Samokhvalov, P.S.^1 ; Martynov, I.L.^1 ; Tameev, A.R.^2

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Moscow

115409, Russia^1

A.N. Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 31-bld.4 Leninsky Prospect, Moscow

119071, Russia^2

关键词: Decay kinetics;    Ligand molecules;    Measurements of;    Organic ligands;    Organic molecules;    Photoluminescence spectrum;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/475/1/012028/pdf
DOI  :  10.1088/1757-899X/475/1/012028

来源: IOP

【 摘 要 】

The quantum dot (QD) solids are promising materials for use in electronics. We studied the effect of variations in the length of organic ligands on the optical properties of PbS QD solids from the measurements of photoluminescence spectra and decay kinetics. The decay is becoming exponentially faster along with the decrease of the length of ligand molecules, which is consistent with the decay of excitons by hopping of charge carriers.