2019 | vol. 67 | nr. 1 | art. 1

Polymer/Fullerene Bulk Heterojunction Solar Cells

Nadia Faliha Chalabi, Ahlam Guen-Bouazza
Organic solar cells have attracted significant attention in the last decade mainly due to their potential of providing environmentally safe, lightweight, flexible, non-expensive, and efficient solar cells. Organic solar cells "OPVs" are considered as a highly innovative research area and they are presently maturing with respect their fundamental processes of operation understanding. Different studies have been presented concerning these devices that show colossal promises as an economically and environmentally friendly technology using solar energy, mainly due to their simple fabrication processes. However, innovations allowing to obtain improves devices with a better power conversion efficiency are needed for organic solar cell technology to become competitive in the future. This article reviews numerical simulation of a bulk heterojunction organic solar using by TCAD simulations. A mixture of poly (2-methoxy-5-(3’, 7’-dimethyloctyloxy)-p-phenylene vinylene) (OC1C10-PPV) and [6, 6]-phenyl C61-butyric acid methyl ester (PCBM) 1:4 wt. % is used as  a photo-active material , between a transparent Indium Tin Oxide (ITO)-electrode and poly(3,4 ethylene dioxythiophene)-poly (styrene sulfonate) (PEDOT:PSS) electron blocking layer and back electrode. This work, focusing on power conversion efficiency improvement by using two different metals that are silver (Ag), and Aluminium (Al).The impact of cathode thicknesses, its nature are studied in this work. The impact of temperature variation is also considered in this study. The best power conversion efficiency we obtained is equal to 9.5% for an Ag cathode.
Keywords: Organic solar cell, Bulk heterojunction, conjugated polymers, power conversion efficiency, back electrode contact, different series resistances, temperature
To cite this article: Faliha Chalabi N., Guen-Bouazza A., “Polymer/fullerene bulk heterojunction solar cells”, Electrotehnica, Electronica, Automatica (EEA), 2019, vol. 67, no. 1, pp. 05-12, ISSN 1582-5175.