Electrical Performance of Organic Solar Cells with AdditiveAssisted Vertical Phase Separation in the Photoactive Layer

被引：67

作者：

Kim, Min ^{[1
]}

Kim, Joo-Hyun ^{[1
]}

Choi, Hyun Ho ^{[1
]}

Park, Jong Hwan ^{[1
]}

Jo, Sae Byeok ^{[1
]}

Sim, Myungsun

Kim, Jong Soo ^{[1
]}

Jinnai, Hiroshi ^{[2
]}

Park, Yeong Don ^{[3
]}

Cho, Kilwon ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Chem Engn, Pohang 790784, South Korea

[2] Kyushu Univ, Dept Mat Chem & Engn, Japan Sci & Technol Agcy, ERATO,Takahara Soft Interfaces Project, Fukuoka 8190395, Japan

[3] Incheon Natl Univ, Dept Energy & Chem Engn, Inchon 406772, South Korea

来源：

ADVANCED ENERGY MATERIALS | 2014年 / 4卷 / 02期

关键词：

vertical phase separation; organic solar cells; solvent additives; charge transport; field-effect transistors; SELF-ORGANIZATION; POLYMER; MORPHOLOGY; EFFICIENCY; FILMS;

D O I：

10.1002/aenm.201300612

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Understanding the vertical phase separation of donor and acceptor compounds in organic photovoltaics is requisite for the control of charge transport behavior and the achievement of efficient charge collection. Here, the vertically phase-separated morphologies of poly(3-hexylthiophene):[6,6]phenyl-C61-butyric acid methyl ester (P3HT:PCBM) blend films are examined with transmission electron microtomography, dynamic secondary ion mass spectroscopy, and X-ray photoelectron spectroscopy. The 3D morphologies of the processed films are analyzed and how the solvent additive causes vertical segregation is determined. The photocurrent-voltage characteristics of the vertically segregated blend films are strongly dependent on the 3D morphological organization of the donor and acceptor compounds in the photoactive layer. This dependence is correlated with asymmetric carrier transport at the buried interface and the air surface in the vertically segregated blend films.

引用

页数：9

共 39 条

[1]

[Anonymous], 2010, PHYS REV B

[2] Hybrid zinc oxide conjugated polymer bulk heterojunction solar cells [J].