Formation and study of PbS quantum dot films with different ligands

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

Aleksandrov, A.E.^1 ; Zvaigzne, M.A.^1 ; Martynov, I.L.^1 ; Lypenko, D.A.^2 ; Tameev, A.R.^2 ; Chistyakov, A.A.^1

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe shosse 31, 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: Diode structure;    Lead sulfide;    Organic molecules;    Quantum dot films;    Surface ligands;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/475/1/012025/pdf
DOI  :  10.1088/1757-899X/475/1/012025

来源: IOP

【 摘 要 】

We study the influence of various organic molecules of ligands on the optical properties of the condensates of lead sulfide quantum dots (QD) and photoconductivity of diode structures made on their basis. It is shown that the decrease of the molecule length of surface ligands by a factor of 4 leads to the significant increase in the conductivity, and the emergence of photocurrent. We also demonstrate that the thickness of the photoactive QD layer plays an important role in the performances of photovoltaic cells.