Formation of Nanopatterned Polymer Blends in Photovoltaic Devices

被引：189

作者：

He, Ximin ^{[2
,3
]}

Gao, Feng ^{[1
]}

Tu, Guoli ^{[3
]}

Hasko, David ^{[1
]}

Huettner, Sven ^{[1
]}

Steiner, Ullrich ^{[1
,4
]}

Greenham, Neil C. ^{[1
]}

Friend, Richard H. ^{[1
]}

Huck, Wilhelm T. S. ^{[2
,3
,5
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Dept Phys, Cambridge CB3 0FF, England

[2] Univ Cambridge, Nanosci Ctr, Cambridge CB3 0FF, England

[3] Univ Cambridge, Dept Chem, Melville Lab, Cambridge CB2 1EW, England

[4] Univ Freiburg, FRIAS, D-79104 Freiburg, Germany

[5] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands

来源：

NANO LETTERS | 2010年 / 10卷 / 04期

关键词：

Polymer photovoltaics; nanoscale morphology; nanoimprint lithography; polymer blends; SOLAR-CELLS; MORPHOLOGY; LITHOGRAPHY;

D O I：

10.1021/nl904098m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper, we demonstrate a double nanoimprinting process that allows the formation of nanostructured polymer heterojunctions of composition and morphology that can be selected independently. We fabricated photovoltaic (PV) devices with extremely high densities (10(14)/mm(2)) of interpenetrating nanoscale columnar features in the active polymer blend layer. The smallest feature sizes are as small as 25 nm on a 50 nm pitch, which results in a spacing of hererojunctions at or below the exciton diffusion length. Photovoltaic devices based on double-imprinted poly((9,9-dioctylfluorene)-2,7-diyl-alt-[4,7-bis(3-hexylthien-5-yl)-2,1,3-benzothiadiazole]-2',2 '' diyl) (F8TBT)/poly(3-hexylthiophene) (P3HT) films are among the best polymer polymer blend devices reported to date with a power conversion efficiency (PCE, eta(e)) of 1.9%.

引用

页码：1302 / 1307

页数：6

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