MoO3/CuI hybrid buffer layer for the optimization of organic solar cells based on a donor-acceptor triphenylamine
MAKHA, Mohammed
PRES Université Nantes Angers Le Mans [UNAM]
Laboratoire Optoélectronique et Physico-chimie des Matériaux, Kenitra [LOPM]
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PRES Université Nantes Angers Le Mans [UNAM]
Laboratoire Optoélectronique et Physico-chimie des Matériaux, Kenitra [LOPM]
MAKHA, Mohammed
PRES Université Nantes Angers Le Mans [UNAM]
Laboratoire Optoélectronique et Physico-chimie des Matériaux, Kenitra [LOPM]
< Reduce
PRES Université Nantes Angers Le Mans [UNAM]
Laboratoire Optoélectronique et Physico-chimie des Matériaux, Kenitra [LOPM]
Language
en
Article de revue
This item was published in
Solar Energy Materials and Solar Cells. 2013, vol. 110, p. 107
Elsevier
English Abstract
We investigate the effect of anode buffer layers (ABLs) on the performances of multi-layer heterojunction solar cells with thienylenevinylene-triphenylamine with peripheral dicyanovinylene groups (TDCV-TPA) as donor material ...Read more >
We investigate the effect of anode buffer layers (ABLs) on the performances of multi-layer heterojunction solar cells with thienylenevinylene-triphenylamine with peripheral dicyanovinylene groups (TDCV-TPA) as donor material and fullerene C60 as acceptor. The deposition of a CuI layer between the ITO anode and the electron donor significantly improves the short-circuit current density (Jsc) and fill factor (FF) but reduces the open-circuit voltage (Voc). On the other hand, a MoO3 buffer layer increases the Voc but leads to limited Jsc and FF values, thus reducing power conversion efficiency (PCE). In this context, we show that the use of a hybrid anode buffer layer MoO3/CuI leads to a considerable improvement of the cells performances and a PCE of 2.50% has been achieved. These results are discussed on the basis of the dual function of MoO3 and CuI. While both of them reduce the hole injection barrier, CuI improves the conductivity of the organic film through an improvement of molecular order while MoO3 prevents leakage current through the diode. Finally the results of a cursory study of the ageing process provide further support to this interpretation of the effects of the various buffer layers.Read less <
English Keywords
Organic photovoltaics
Thin film
Small molecules
Copper iodide
Anode buffer layer
Origin
Hal imported