Nanoparticle Agglomeration in Polymer-Based Solar Cells

被引：119

作者：

Kiel, Jonathon W. ^{[1
]}

Eberle, Aaron P. R. ^{[2
]}

Mackay, Michael E. ^{[1
,2
]}

机构：

[1] Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA

[2] Univ Delaware, Ctr Neutron Sci, Newark, DE 19716 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 16期

关键词：

INTERNAL QUANTUM EFFICIENCY; CHAIN CONFORMATION; PHASE-SEPARATION; SMALL-ANGLE; POLY(3-HEXYLTHIOPHENE); DIFFUSION; DEPENDENCE; FILMS;

D O I：

10.1103/PhysRevLett.105.168701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that the morphology of polymer-based solar cells substantially changes after annealing using small angle neutron scattering. Phenyl-C61-butyric acid methyl ester (PCBM) is found reasonably well dispersed within the poly(3-hexylthiophene) (P3HT) rich phase after initial processing (spin coating). However, the PCBM structure coarsens after annealing, clearly evidenced by the increase in scattering intensity at a small wave vector. The change in morphology at the nanoscale is related to improved device performance and the simultaneous, contradictory, increase in photoluminescence.

引用

页数：4

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