Title :
Investigation of Pcbm Concentration on Photovoltaic Characteristics of Polymer Solar Cells with Blends of P3Ht and Pcbm
Author :
Hayashi, Yasuhiko ; Hamada, K. ; Takagi, K. ; Takasu, A. ; Takagi, S. ; Soga, T.
Author_Institution :
Dept. of Environ. Technol., Nagoya Inst. of Technol.
Abstract :
Polymer photovoltaic cells (PVCs) consisting of a blend of p-type poly(3-hexylthiophene) (P3HT) and n-type [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) were fabricated and investigated the role of the PCBM concentration. The photocurrent and the power conversion efficiency gradually increased with increase in PCBM concentration up to 50% and decreased with further increase in PCBM concentration. Both the root mean square and average roughnesses measured by atomic force microscopy decrease as the PCBM concentration increases from 0 to approximately 70%. The surface morphology of P3HT/PCBM blended and improved donor-acceptor proximity, leading to electron conductivity, contribute to the increase in power conversion efficiency
Keywords :
atomic force microscopy; photoconductivity; photovoltaic effects; polymer blends; solar cells; surface morphology; surface roughness; P3HT; PCBM; PVCs; atomic force microscopy; donor-acceptor proximity; electron conductivity; n-type [6,6]-phenyl-C61-butyric acid methyl ester; p-type poly(3-hexylthiophene); photocurrent; photovoltaic characteristics; polymer blends; polymer photovoltaic cells; polymer solar cells; power conversion efficiency; root mean square roughnesses; surface morphology; Atomic force microscopy; Atomic measurements; Force measurement; Photoconductivity; Photovoltaic cells; Photovoltaic systems; Polymers; Power conversion; Root mean square; Solar power generation;
Conference_Titel :
Photovoltaic Energy Conversion, Conference Record of the 2006 IEEE 4th World Conference on
Conference_Location :
Waikoloa, HI
Print_ISBN :
1-4244-0017-1
Electronic_ISBN :
1-4244-0017-1
DOI :
10.1109/WCPEC.2006.279443
