Study and Development of Photovoltaic Structures Based on Quantum Dot Solids of PbS with Various Ligands
- Authors: Zvaigzne M.A.1, Aleksandrov A.E.2, Gol’tyapin Y.V.1, Lypenko D.A.2, Tameev A.R.2, Nikitenko V.R.1, Chistyakov A.A.1
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Affiliations:
- National Research Nuclear University MEPhI
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry
- Issue: Vol 44, No 11 (2018)
- Pages: 1010-1012
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/208032
- DOI: https://doi.org/10.1134/S1063785018110305
- ID: 208032
Cite item
Abstract
The photoconductivity of condensates of lead-sulfide quantum dots (QDs)—QD solids—with various organic ligands is studied. It is demonstrated that the QD solid photoconductivity increases exponentially with a reduction in length of ligand molecules and does not depend on their chemical structures, since it is governed by hopping transport of charge carriers. In contrast, the photocurrent in photovoltaic ITO/PEDOT: PSS/PbS/ZnO/Al elements depends on the ligand structure, since this structure sets the positions of QD energy levels and thus affects the efficiency of charge carrier transfer to electrodes. The difference between mechanisms of generation of photoconductivity and photovoltaic currents is discussed.
About the authors
M. A. Zvaigzne
National Research Nuclear University MEPhI
Author for correspondence.
Email: mariazvaigzne@gmail.com
Russian Federation, Moscow, 115409
A. E. Aleksandrov
A.N. Frumkin Institute of Physical Chemistry and Electrochemistry
Email: mariazvaigzne@gmail.com
Russian Federation, Moscow, 119071
Ya. V. Gol’tyapin
National Research Nuclear University MEPhI
Email: mariazvaigzne@gmail.com
Russian Federation, Moscow, 115409
D. A. Lypenko
A.N. Frumkin Institute of Physical Chemistry and Electrochemistry
Email: mariazvaigzne@gmail.com
Russian Federation, Moscow, 119071
A. R. Tameev
A.N. Frumkin Institute of Physical Chemistry and Electrochemistry
Email: mariazvaigzne@gmail.com
Russian Federation, Moscow, 119071
V. R. Nikitenko
National Research Nuclear University MEPhI
Email: mariazvaigzne@gmail.com
Russian Federation, Moscow, 115409
A. A. Chistyakov
National Research Nuclear University MEPhI
Email: mariazvaigzne@gmail.com
Russian Federation, Moscow, 115409