Title :
Anode modification of BHJ organic photovoltaics using copper oxide
Author :
Soultati, Anastasia ; Vasilopoulou, Maria
Author_Institution :
Inst. of Nanosci. & Nanotechnol., Aghia Paraskevi, Greece
Abstract :
In this work, the influence of the incorporation of copper oxide films, used to enhance hole extraction/collection, on the optical and electrical properties of bulk heterojunction (BHJ) organic photovoltaics (OPVs), is demonstrated. A significant increase in device efficiency were obtained in OPVs based on the poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C71 butyric acid methyl ester (PC71BM) bulk heterojunctions. This was achieved by introducing a copper oxide layer, after optimizing its thickness to 20 nm, at the anode/organic layer interface instead of the commonly used poly(styrenesulfonate)-doped poly(ethylenedioxythiophene) (PEDOT:PSS). The increased efficiency was attributed to the increase of Fill Factor (FF) and the reduction in the device series resistance, when PEDOT:PSS was replaced by these metal oxide layers.
Keywords :
anodes; optimisation; optoelectronic devices; organic compounds; organic semiconductors; photoelectric devices; semiconductor heterojunctions; solar cells; BHJ organic photovoltaic; OPV; P3HT; PEDOT:PSS; [6,6]-phenyl-C71 butyric acid methyl ester; anode modification; anode-organic layer interface; bulk heterojunction; device series resistance; fill factor; metal oxide layer; poly(3- hexylthiophene); poly(styrenesulfonate)-doped poly(ethylenedioxythiophene); thickness optimisation; Absorption; Anodes; Copper; Films; Performance evaluation; Photovoltaic systems; copper oxide; enhanced performance; hole extraction layers; organic photovoltaics;
Conference_Titel :
Transparent Optical Networks (ICTON), 2015 17th International Conference on
Conference_Location :
Budapest
DOI :
10.1109/ICTON.2015.7193673
