A Fullerene-Based Organic Exciton Blocking Layer with High Electron Conductivity

被引：45

作者：

Bartynski, Andrew N. ^{[1
]}

Trinh, Cong ^{[2
]}

Panda, Anurag ^{[3
]}

Bergemann, Kevin ^{[4
]}

Lassiter, Brian E. ^{[3
]}

Zimmerman, Jeramy D. ^{[5
]}

Forrest, Stephen R. ^{[3
,4
,5
]}

Thompson, Mark E. ^{[1
,2
]}

机构：

[1] Univ So Calif, Dept Chem Engn, Los Angeles, CA 90089 USA

[2] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA

[3] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

[4] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[5] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA

来源：

NANO LETTERS | 2013年 / 13卷 / 07期

关键词：

Organic photovoltaics; fullerenes; small-molecule; organic semiconductors; buffer layers; exciton blocking layers; PHOTOVOLTAIC CELLS; DIFFUSION; C-60;

D O I：

10.1021/nl401531t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate the concentration dependence of C-60 absorption in solid solutions of C-60 and bathocuprione (BCP), revealing a nonlinear decrease of the C-60 charge transfer (CT) state absorption. These blends are utilized to study the photocurrent contribution of the CT in bilayer organic photovoltaics (OPVs); 1:1 blends produce 40% less photocurrent. As exciton blocking electron transporting layers, the blends achieve power conversion efficiencies of 5.3%, an increase of 10% compared to conventional buffers.

引用

页码：3315 / 3320

页数：6

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