Study and Development of Photovoltaic Structures Based on Quantum Dot Solids of PbS with Various Ligands

M. A. Zvaigzne; A. E. Aleksandrov; Ya V. Gol’tyapin; D. A. Lypenko; A. R. Tameev; V. R. Nikitenko; A. A. Chistyakov

doi:10.1134/S1063785018110305

Study and Development of Photovoltaic Structures Based on Quantum Dot Solids of PbS with Various Ligands

M. A. Zvaigzne, A. E. Aleksandrov, Ya V. Gol’tyapin, D. A. Lypenko, A. R. Tameev, V. R. Nikitenko, A. A. Chistyakov

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	1010-1012
Number of pages	3
Journal	Technical Physics Letters
Volume	44
Issue number	11
DOIs	https://doi.org/10.1134/S1063785018110305
Publication status	Published - 1 Nov 2018
Externally published	Yes

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title = "Study and Development of Photovoltaic Structures Based on Quantum Dot Solids of PbS with Various Ligands",

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.",

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doi = "10.1134/S1063785018110305",

language = "English",

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TY - JOUR

T1 - Study and Development of Photovoltaic Structures Based on Quantum Dot Solids of PbS with Various Ligands

AU - Zvaigzne, M. A.

AU - Aleksandrov, A. E.

AU - Gol’tyapin, Ya V.

AU - Lypenko, D. A.

AU - Tameev, A. R.

AU - Nikitenko, V. R.

AU - Chistyakov, A. A.

PY - 2018/11/1

Y1 - 2018/11/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85058154320

U2 - 10.1134/S1063785018110305

DO - 10.1134/S1063785018110305

M3 - Article

AN - SCOPUS:85058154320

SN - 1063-7850

VL - 44

SP - 1010

EP - 1012

JO - Technical Physics Letters

JF - Technical Physics Letters

IS - 11

ER -

Study and Development of Photovoltaic Structures Based on Quantum Dot Solids of PbS with Various Ligands

Abstract

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