Stability of High Band Gap P3HT : PCBM Organic Solar Cells Using TiOx Interfacial Layer. (28th January 2014)

• Record Type: Journal Article
• Authors: Foe, Kurniawan; Namkoong, Gon; Samson, Matthew; Younes, Enas M.; Nam, Ilho; Abdel-Fattah, Tarek M.
• Other Names: Quan Xie Academic Editor.
• Is Part Of: International journal of photoenergy. Volume 2014(2014)
• Publication Date: 2014-01-28
• Subjects: Photochemistry -- Periodicals; Photobiology -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Photochimie; Photobiologie; Chimie physique et théorique; Chemistry, Physical and theoretical; Photobiology; Photochemistry; Electronic journals; Periodicals; 541.35
• DOI: 10.1155/2014/784724
• Languages: English
• ISSNs: 1110-662X

Abstract

Abstract : We fabricated a poly[3-hexylthiophene] (P3HT) and [6, 6]-phenyl-C61-butyric acid methyl ester (PC61 BM) organic photovoltaic cells (OPCs) using TiO x interfacial layer. We performed optimization processes for P3HT : PC61 BM with the TiO x layer. We found that a solution based TiO x layer coated at a spin speed of 3000 rpm improved the photon absorption of the active layer. An optimized TiO x layer was also used as the interfacial layer to investigate the stability of P3HT : PC61 BM OPC. After 70 days of storage, we observed that the short-circuit current density (J SC ) dropped by 16.2%, fill factor (FF) dropped by 10.6%, and power conversion efficiency (PCE) dropped approximately by 25%, while the open-circuit voltage (V OC ) remained relatively stable. We found that a solution based TiO x layer synthesized using a sol-gel chemistry method was very effective in protecting the active layer from degradation.