Polymer Solar Cells Using Single-Wall Carbon Nanotubes Modified with Thiophene Pedant Groups
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- 作者：Ana Flá ; via Nogueira ; Bruno S. Lomba ; Mauro A. Soto-Oviedo ; Carlos Roque Duarte Correia ; Paola Corio ; Clascí ; dia A. Furtado ; Ivo A. Hü ; mmelgen
- 刊名：Journal of Physical Chemistry C
- 出版年：2007
- 出版时间：December 13, 2007
- 年：2007
- 卷：111
- 期：49
- 页码：18431 - 18438
- 全文大小：376K
- 年卷期：v.111,no.49(December 13, 2007)
- ISSN：1932-7455
文摘
Single-wall carbon nanotubes (SWCNT) have attracted great interest for applications in a variety of researchareas, including electronics and functional materials. However, a good dispersion of these materials in polymermatrices is a demanding factor in order to obtain more homogeneous and less bundled films for constructingoptoelectronic and electrochemical devices. In this report we describe a covalent modification with thiophenegroups located at the edges and at defects in SWCNT to modify the interaction with the polymer matrixaiming at its application in solar cells. The modified SWCNT and its composites with poly(3-octylthiophene)were characterized by Raman, infrared, UV-vis, and luminescence spectroscopies and cyclic voltammetry.The best bulk heterojunction solar cell was obtained using 5 wt % of the modified carbon nanotube (SWCNT-THIOP) and shows open circuit voltage (VOC), short-circuit current (Isc), and efficiency () of 0.75 V,9.5 A cm-2, 0.184%, respectively.