This article is cited in 5 papers

XIX Symposium "Nanophysics and Nanoelectronics", Nizhny Novgorod, March 10-14, 2015

Tandem photovoltaic cells with a composite intermediate layer

V. V. Travkin^a, G. L. Pakhomov^ab, A. Yu. Luk'yanov^a, P. A. Stuzhin<sup>c

a</sup> Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhnii Novgorod
^b Lobachevsky State University of Nizhny Novgorod
^c Ivanovo State University of Chemistry and Technology

Abstract: 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$_x$ deposited over an ultrathin Al layer is used to join the subcells. Additionally, a MoO$_x$ 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 $V_{\mathrm{oc}}$ 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.

Received: 22.04.2015
Accepted: 12.05.2015

 English version: Semiconductors, 2015, 49:11, 1453–1458

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