Origin of the efficiency enhancement in ferroelectric functionalized organic solar cells

被引：43
作者：
Asadi, Kamal [1 ]
de Bruyn, Paul [1 ]
Blom, Paul W. M. [1 ,2 ]
de Leeuw, Dago M. [1 ,3 ]
机构：
[1] Univ Groningen, Zernike Inst Adv Mat, NL-9747 AG Groningen, Netherlands
[2] Holst Ctr, NL-5605 KN Eindhoven, Netherlands
[3] Philips Res Labs, NL-5656 AE Eindhoven, Netherlands
来源：
APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 18期
关键词：
PHASE-SEPARATED BLENDS; DEPOLARIZATION-FIELD; NONVOLATILE MEMORIES; FILMS; INSTABILITY; STABILITY; POLYMERS;
D O I：
10.1063/1.3587630
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have investigated the efficiency enhancement of organic solar cells upon incorporation of a thin ferroelectric polymer layer. For non-Ohmic contacts the enhancement is due to an increased open circuit voltage, which is, however, independent of the ferroelectric polarization direction. Ferroelectricity cannot play a role due to depolarization and charge compensation. The same improvement is also obtained with a non-ferroelectric fluorinated polymer. The data unambiguously show that the improved efficiency is solely due to improvement of the cathode. The fluorinated polymer layer plays the role of LiF in an optimized solar cell. (C) 2011 American Institute of Physics. [doi:10.1063/1.3587630]
引用
收藏
页数：3
相关论文
共 15 条
[1]   Organic non-volatile memories from ferroelectric phase-separated blends [J].
Asadi, Kamal ;
De Leeuw, Dago M. ;
De Boer, Bert ;
Blom, Paul W. M. .
NATURE MATERIALS, 2008, 7 (07) :547-550
[2]   Retention Time and Depolarization in Organic Nonvolatile Memories Based on Ferroelectric Semiconductor Phase-Separated Blends [J].
Asadi, Kamal ;
Wildeman, Jurjen ;
Blom, Paul W. M. ;
de Leeuw, Dago M. .
IEEE TRANSACTIONS ON ELECTRON DEVICES, 2010, 57 (12) :3466-3471
[3]   THERMODYNAMIC STABILITY OF THIN FERROELECTRIC FILMS [J].
BATRA, IP ;
SILVERMAN, BD .
SOLID STATE COMMUNICATIONS, 1972, 11 (01) :291-+
[4]   PHASE-TRANSITION, STABILITY, AND DEPOLARIZATION FIELD IN FERROELECTRIC THIN-FILMS [J].
BATRA, IP ;
WURFEL, P ;
SILVERMAN, BD .
PHYSICAL REVIEW B, 1973, 8 (07) :3257-3265
[5]   Device physics of polymer:fullerene bulk heterojunction solar cells [J].
Blom, Paul W. M. ;
Mihailetchi, Valentin D. ;
Koster, L. Jan Anton ;
Markov, Denis E. .
ADVANCED MATERIALS, 2007, 19 (12) :1551-1566
[6]   Organic tandem and multi-junction solar cells [J].
Hadipour, Afshin ;
de Boer, Bert ;
Blom, Paul W. M. .
ADVANCED FUNCTIONAL MATERIALS, 2008, 18 (02) :169-181
[7]   Molecular Semiconductors in Organic Photovoltaic Cells [J].
Hains, Alexander W. ;
Liang, Ziqi ;
Woodhouse, Michael A. ;
Gregg, Brian A. .
CHEMICAL REVIEWS, 2010, 110 (11) :6689-6735
[8]   FERROELECTRIC POLYMERS [J].
KEPLER, RG ;
ANDERSON, RA .
ADVANCES IN PHYSICS, 1992, 41 (01) :1-57
[9]   For the Bright Future-Bulk Heterojunction Polymer Solar Cells with Power Conversion Efficiency of 7.4% [J].
Liang, Yongye ;
Xu, Zheng ;
Xia, Jiangbin ;
Tsai, Szu-Ting ;
Wu, Yue ;
Li, Gang ;
Ray, Claire ;
Yu, Luping .
ADVANCED MATERIALS, 2010, 22 (20) :E135-+
[10]   Effect of metal electrodes on the performance of polymer:fullerene bulk heterojunction solar cells [J].
Mihailetchi, VD ;
Koster, LJA ;
Blom, PWM .
APPLIED PHYSICS LETTERS, 2004, 85 (06) :970-972
12