Effective mobility and photocurrent in carbon nanotube-polymer composite photovoltaic cells

被引：63

作者：

Kymakis, E.

Servati, P.

Tzanetakis, P.

Koudoumas, E.

Kornilios, N.

Rompogiannakis, I.

Franghiadakis, Y.

Amaratunga, G. A. J.

机构：

[1] Technol Educ Inst Crete, Dept Elect Engn, Iraklion 71004, Crete, Greece

[2] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC V6T 1Z4, Canada

[3] Univ Cambridge, Dept Engn, Elect Engn Div, Cambridge CB3 0FA, England

[4] Univ Crete, Dept Phys, Iraklion 71003, Crete, Greece

[5] TEI Crete, Sci Dept & Photovolta Pk, Iraklion 71500, Crete, Greece

来源：

NANOTECHNOLOGY | 2007年 / 18卷 / 43期

关键词：

D O I：

10.1088/0957-4484/18/43/435702

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We examine the dark and the illuminated current - voltage ( J - V) characteristics of poly( 3- octylthiophene) ( P3OT)/ single- wall carbon nanotube ( SWNT) composite photovoltaic cells as a function of SWNT concentration. Using an exponential band tail model, the influence of SWNT concentration on the J - V characteristics of the cells is analysed in terms of corresponding parameters such as effective hole mobility, short- circuit current, and open- circuit voltage. For the device with optimum 1% SWNT concentration, the increased photoresponse (similar to 500 times) as compared to the pristine P3OT cell can be attributed partly to the increase (similar to 50 times) in effective hole mobility, due to the reduction of localized states of the pristine P3OT matrix, and partly to the enhanced exciton extraction at the polymer/ nanotube junctions.

引用

页数：6

共 33 条

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