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Title: Tandem photovoltaic cells with a composite intermediate layer

We have fabricated and tested tandem photovoltaic cells containing series-connected subcells of the “oxide–organic semiconductor–metal” type. The organic semiconductors were two phthalocyanine dyes (SubPc and PcVO); Al or Ag:Mg were used as capping metallic electrodes. A semitransparent composite metal–oxide layer formed by molybdenum oxide MoO{sub x} deposited over an ultrathin Al layer is used to join the subcells. Additionally, a MoO{sub x} layer deposited onto glass/ITO substrates serves as an anode buffer in the front subcell, and LiF deposited onto the dye layers serves as a cathode buffer in the front or rear subcells. Upon optimization of the thickness and composition of the intermediate layer, the open circuit voltage U{sub oc} amounts to 1.6 V reflecting total summation of the contributions from the each of the subcells at a wide spectral coating from 300–1000 nm. The fill factor in the tandem cell is not worse than in individually made single cells with the same scheme or in disconnected subcells.
Authors:
; ;  [1] ;  [2]
  1. Russian Academy of Sciences, Institute for Physics of Microstructures (Russian Federation)
  2. Ivanovo State University of Chemistry and Technology (Russian Federation)
Publication Date:
OSTI Identifier:
22469696
Resource Type:
Journal Article
Resource Relation:
Journal Name: Semiconductors; Journal Volume: 49; Journal Issue: 11; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM; ANODES; CATHODES; ELECTRIC POTENTIAL; FILL FACTORS; GLASS; INDIUM COMPOUNDS; LAYERS; LITHIUM FLUORIDES; MAGNESIUM; MOLYBDENUM OXIDES; OPTIMIZATION; ORGANIC SEMICONDUCTORS; PHOTOVOLTAIC CELLS; PHTHALOCYANINES; SILVER; SUBSTRATES; TIN OXIDES