Nanoscale morphology of high-performance polymer solar cells

被引：1444
作者：
Yang, XN
Loos, J
Veenstra, SC
Verhees, WJH
Wienk, MM
Kroon, JM
Michels, MAJ
Janssen, RAJ
机构：
[1] Eindhoven Univ Technol, Lab Mat & Interface Chem, NL-5600 MB Eindhoven, Netherlands
[2] Eindhoven Univ Technol, Grp Polymer Phys, NL-5600 MB Eindhoven, Netherlands
[3] Eindhoven Univ Technol, Lab Polymer Technol, NL-5600 MB Eindhoven, Netherlands
[4] ECN, NL-1755 ZG Petten, Netherlands
[5] Dutch Polymer Inst, NL-5600 AX Eindhoven, Netherlands
来源：
NANO LETTERS | 2005年 / 5卷 / 04期
关键词：
D O I：
10.1021/nl048120i
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Transmission electron microscopy and electron diffraction are used to study the changes in morphology of composite films of poly(3-hexylthiophene) (P3HT) and a methanofullerene derivative (PCBM) in bulk heterojunction solar cells. Thermal annealing produces and stabilizes a nanoscale interpenetrating network with crystalline order for both components. P3HT forms long, thin conducting nanowires in a rather homogeneous, nanocrystalline PCBM film. Both the improved crystalline nature of films and increased but controlled demixing between the two constitutes therein after annealing explains the considerable increase of the power conversion efficiency observed in these devices.
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收藏
页码：579 / 583
页数：5
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