Organic photovoltaics incorporating electron conducting exciton blocking layers

被引：66

作者：

Lassiter, Brian E. ^{[1
]}

Wei, Guodan ^{[1
]}

Wang, Siyi ^{[3
]}

Zimmerman, Jeramy D. ^{[2
]}

Diev, Viacheslav V. ^{[3
]}

Thompson, Mark E. ^{[3
]}

Forrest, Stephen R. ^{[1
,2
,4
]}

机构：

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

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

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

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

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 24期

关键词：

OPEN-CIRCUIT VOLTAGE; SOLAR-CELLS; THIN-FILMS; EFFICIENT; DEVICES;

D O I：

10.1063/1.3598426

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate that 3,4,9,10 perylenetetracarboxylic bisbenzimidazole (PTCBI) and 1,4,5,8-napthalene-tetracarboxylic-dianhydride (NTCDA) can function as electron conducting and exciton blocking layers when interposed between the acceptor layer and cathode. A low-resistance contact is provided by PTCBI, while NTCDA acts as an exciton blocking layer and optical spacer. Both materials serve as efficient electron conductors, leading to a fill factor as high as 0.70. By using an NTCDA/PTCBI compound blocking layer structure in a functionalized-squaraine/C-60-based device, we obtain a spectrally corrected power conversion efficiency of 5.1 +/- 0.1% under 1 sun, AM 1.5G simulated solar illumination, an improvement of >25% compared to an analogous device using a conventional bathocuproine layer that has previously been shown to conduct electrons via damage-induced midgap states. (C) 2011 American Institute of Physics. [doi:10.1063/1.3598426]

引用

页数：3

共 23 条

[1]

*AM SOC TEST MAT, E1021 AM SOC TEST MA

[2] Application of metal-doped organic layer both as exciton blocker and optical spacer for organic photovoltaic devices [J].

Chan, M. Y. ;

Lai, S. L. ;

Lau, K. M. ;

Lee, C. S. ;

Lee, S. T. .

APPLIED PHYSICS LETTERS, 2006, 89 (16)

[3] Polymer solar cells with enhanced open-circuit voltage and efficiency [J].

Chen, Hsiang-Yu ;

Hou, Jianhui ;

Zhang, Shaoqing ;

Liang, Yongye ;

Yang, Guanwen ;

Yang, Yang ;

Yu, Luping ;

Wu, Yue ;

Li, Gang .

NATURE PHOTONICS, 2009, 3 (11) :649-653

[4] Efficient p-i-n type organic solar cells incorporating 1,4,5,8-naphthalenetetracarboxylic dianhydride as transparent electron transport material [J].

Falkenberg, Christiane ;

Uhrich, Christian ;

Olthof, Selina ;

Maennig, Bert ;

Riede, Moritz K. ;

Leo, Karl .

JOURNAL OF APPLIED PHYSICS, 2008, 104 (03)

[5] Ultrathin organic films grown by organic molecular beam deposition and related techniques [J].

Forrest, SR .

CHEMICAL REVIEWS, 1997, 97 (06) :1793-1896

[6] Highly efficient p-i-n type organic photovoltaic devices [J].

Gebeyehu, D ;

Pfeiffer, M ;

Maennig, B ;

Drechsel, J ;

Werner, A ;

Leo, K .

THIN SOLID FILMS, 2004, 451 :29-32

[7] Ideal diode equation for organic heterojunctions. I. Derivation and application [J].

Giebink, N. C. ;

Wiederrecht, G. P. ;

Wasielewski, M. R. ;

Forrest, S. R. .

PHYSICAL REVIEW B, 2010, 82 (15)

[8]

Hall L.S., 2021, UNPUB

[9] Metal-dependent charge transfer and chemical interaction at interfaces between 3,4,9,10-perylenetetracarboxylic bisimidazole and gold, silver and magnesium [J].

Hill, I. G. ;

Schwartz, J. ;

Kahn, A. .

ORGANIC ELECTRONICS, 2000, 1 (01) :5-13

[10] Electronic structure and electrical properties of interfaces between metals and π-conjugated molecular films [J].

Kahn, A ;

Koch, N ;

Gao, WY .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2003, 41 (21) :2529-2548

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