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

被引：0
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作者：
M. A. Zvaigzne
A. E. Aleksandrov
Ya. V. Gol’tyapin
D. A. Lypenko
A. R. Tameev
V. R. Nikitenko
A. A. Chistyakov
机构：
[1] National Research Nuclear University MEPhI,A.N. Frumkin Institute of Physical Chemistry and Electrochemistry
[2] Russian Academy of Sciences,undefined
来源：
Technical Physics Letters | 2018年 / 44卷
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摘要：
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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页码：1010 / 1012
页数：2
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