UV-treated graphene oxide as anode interfacial layers for P3HT : PCBM solar cells. (28th May 2015)

• Record Type: Journal Article
• Authors: Cheng, Cheng-En; Tsai, Cheng-Wei; Pei, Zingway; Lin, Tsung-Wu; Chang, Chen-Shiung; Chien, Forest Shih-Sen
• Is Part Of: Journal of physics. Volume 48:Number 25(2015)
• Publication Date: 2015-05-28
• Subjects: polymer solar cells -- graphene oxide -- anode interfacial layer -- hole collection; Physics -- Periodicals; 530
• DOI: 10.1088/0022-3727/48/25/255103
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: Solution-processable graphene oxide (GO) ultrathin films were introduced as anode interfacial layers (AILs) for polymer solar cells (PSCs). The photovoltaic performance of PSCs containing thermal- and UV-treated GO was comparable to that of PSCs with conventional poly(3, 4-ethyledioxythiphene):poly(styrenesulfonate) AILs. UV treatment induced the surface activation of GO; an increase in the work function of UV-treated GO improved the energy band alignment at the GO/poly(3-hexylthiophene) interface, which accounted for the efficient hole collection and photovoltaic performance of PSCs with treated GO.