Three-Dimensional Nanoscale Organization of Highly Efficient Low Band-Gap Conjugated Polymer Bulk Heterojunction Solar Cells

被引:50
作者
Dante, Mark
Garcia, Andres
Nguyen, Thuc-Quyen [1 ]
机构
[1] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA
关键词
PHOTOCURRENT GENERATION; EXCITON DIFFUSION; CHARGE-TRANSPORT; POLYTHIOPHENE; PERFORMANCE; MORPHOLOGY; FILMS; POLY(3-HEXYLTHIOPHENE); PHOTOCONDUCTIVITY; NANOMORPHOLOGY;
D O I
10.1021/jp809650p
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
Scanning probe examination on cross sections of bulk heterojunction blends containing an amorphous conjugated polymer, poly [2,6-(4,4-bis- (2-ethylhexyl)-4H-cyclopenta[2,]-b;3,4-b']-dithiopene)-alt-4,7-(2,1,3bezothiadiazole)], and [6,6]-phenyl C-71-butyric acid methyl ester reveals a structural change in the internal features of hole and electron transporting networks when the film is cast from a solution containing 2% by volume 1,8-octanedithiol. Phase separation of the nanoscalar domains becomes more defined, and the average sizes of hole and electron transporting networks double upon addition of the additive. Devices capable of electron- and hole-only transport show no significant improvement of the charge carrier mobilities. The increase in the size of the domains likely gives rise to less charge recombination.
引用
收藏
页码:1596 / 1600
页数:5
相关论文
共 45 条
[1]   Polymer based organic solar cells using ink-jet printed active layers [J].
Aernouts, T. ;
Aleksandrov, T. ;
Girotto, C. ;
Genoe, J. ;
Poortmans, J. .
APPLIED PHYSICS LETTERS, 2008, 92 (03)
[2]   Highly efficient organic solar cells with printable low-cost transparent contacts [J].
Ahlswede, Erik ;
Muehleisen, Wolfgang ;
Wahi, Mohd Wahinuddin bin Moh ;
Hanisch, Jonas ;
Powalla, Michael .
APPLIED PHYSICS LETTERS, 2008, 92 (14)
[3]   Electric-field and temperature dependence of the hole mobility in poly(p-phenylene vinylene) [J].
Blom, PWM ;
deJong, MJM ;
vanMunster, MG .
PHYSICAL REVIEW B, 1997, 55 (02) :R656-R659
[4]   Current-limiting mechanisms in polymer diodes [J].
Bohnenbuck, B ;
von Hauff, E ;
Parisi, J ;
Deibel, C ;
Dyakonov, V .
JOURNAL OF APPLIED PHYSICS, 2006, 99 (02) :1-6
[5]   Temperature- and field-dependent electron and hole mobilities in polymer light-emitting diodes [J].
Bozano, L ;
Carter, SA ;
Scott, JC ;
Malliaras, GG ;
Brock, PJ .
APPLIED PHYSICS LETTERS, 1999, 74 (08) :1132-1134
[6]   Morphology evolution via self-organization and lateral and vertical diffusion in polymer: fullerene solar cell blends [J].
Campoy-Quiles, Mariano ;
Ferenczi, Toby ;
Agostinelli, Tiziano ;
Etchegoin, Pablo G. ;
Kim, Youngkyoo ;
Anthopoulos, Thomas D. ;
Stavrinou, Paul N. ;
Bradley, Donal D. C. ;
Nelson, Jenny .
NATURE MATERIALS, 2008, 7 (02) :158-164
[7]   Influence of nanomorphology on the photovoltaic action of polymer-fullerene composites [J].
Chirvase, D ;
Parisi, J ;
Hummelen, JC ;
Dyakonov, V .
NANOTECHNOLOGY, 2004, 15 (09) :1317-1323
[8]   Nanoscale charge transport and internal structure of bulk heterojunction conjugated polymer/fullerene solar cells by scanning probe microscopy [J].
Dante, Mark ;
Peet, Jeffrey ;
Nguyen, Thuc-Quyen .
JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (18) :7241-7249
[9]   Correlation between structural and optical properties of composite polymer/fullerene films for organic solar cells [J].
Erb, T ;
Zhokhavets, U ;
Gobsch, G ;
Raleva, S ;
Stühn, B ;
Schilinsky, P ;
Waldauf, C ;
Brabec, CJ .
ADVANCED FUNCTIONAL MATERIALS, 2005, 15 (07) :1193-1196
[10]   Structure-function relationships of conjugated polyelectrolyte electron injection layers in polymer light emitting diodes [J].
Garcia, Andres ;
Yang, Renqiang ;
Jin, Youngeup ;
Walker, Bright ;
Nguyen, Thuc-Quyen .
APPLIED PHYSICS LETTERS, 2007, 91 (15)