Alkylidenefluorene-isoindigo copolymers with an optimized molecular conformation for spacer manipulation, π-π stacking and their application in efficient photovoltaic devices

被引：25

作者：

Choi, Min-Hee ^{[1
]}

Song, Kwan Wook ^{[1
]}

Moon, Doo Kyung ^{[1
]}

机构：

[1] Konkuk Univ, Dept Mat Chem & Engn, Seoul 143701, South Korea

来源：

POLYMER CHEMISTRY | 2015年 / 6卷 / 14期

基金：

新加坡国家研究基金会;

关键词：

BAND-GAP POLYMERS; D-A COPOLYMERS; CONJUGATED POLYMERS; CHARGE-TRANSPORT; SIDE-CHAIN; DONOR; BENZOTHIADIAZOLE; CRYSTALLINE;

D O I：

10.1039/c5py00003c

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

D-(pi)(n)-A-type copolymers with different thienyl spacers (n = 0-2) between alkylidenefluorene and isoindigo (P1, P2, P3) were synthesized via a Suzuki coupling reaction. As the number of spacers was increased in a polymer (P1), the UV-Vis absorption maximum (lambda(max)) red-shifted, and the band gap decreased from 1.83 to 1.64 eV. The highest occupied molecular orbital (HOMO) levels of the polymers were increased by increasing the number of spacers. In addition, the facile intermixing due to better accessibility with the PCBM led to an increase in the hole mobility and J(SC). In contrast to P1 and P2, when the P3 thin films were blended with PC70BM in the X-ray diffraction (XRD) measurement, an increased face-on structure of the crystal was observed. The power conversion efficiency (PCE) of P3 was 3.0% and it reached 4.2% for the inverted device fabricated at 1 : 2 ratio with PC70BM.

引用

页码：2636 / 2646

页数：11

共 41 条

[1] Anthracene-based donor-acceptor low band gap polymers for application in solar cells [J].

Almeataq, Mohammed S. ;

Yi, Hunan ;

Al-Faifi, Solyman ;

Alghamdi, Abdulaziz A. B. ;

Iraqi, Ahmed ;

Scarratt, Nicholas W. ;

Wang, Tao ;

Lidzey, David G. .

CHEMICAL COMMUNICATIONS, 2013, 49 (22) :2252-2254

[2] Thieno[3,2-b]thiophene-Diketopyrrolopyrrole-Containing Polymers for High-Performance Organic Field-Effect Transistors and Organic Photovoltaic Devices [J].

Bronstein, Hugo ;

Chen, Zhuoying ;

Ashraf, Rap Shahid ;

Zhang, Weimin ;

Du, Junping ;

Durrant, James R. ;

Tuladhar, Pabitra Shakya ;

Song, Kigook ;

Watkins, Scott E. ;

Geerts, Yves ;

Wienk, Martijn M. ;

Janssen, Rene A. J. ;

Anthopoulos, Thomas ;

Sirringhaus, Henning ;

Heeney, Martin ;

McCulloch, Iain .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (10) :3272-3275

[3] Linear Side Chains in Benzo[1,2-b:4,5-b′]dithiophene-Thieno[3,4-c]pyrrole-4,6-dione Polymers Direct Self-Assembly and Solar Cell Performance [J].

Cabanetos, Clement ;

El Labban, Abdulrahman ;

Bartelt, Jonathan A. ;

Douglas, Jessica D. ;

Mateker, William R. ;

Frechet, Jean M. J. ;

McGehee, Michael D. ;

Beaujuge, Pierre M. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2013, 135 (12) :4656-4659

[4] Low band gap polymers based on 1,4-dialkoxybenzene, thiophene, bithiophene donors and the benzothiadiazole acceptor [J].

Carle, Jon Eggert ;

Andreasen, Jens Wenzel ;

Jorgensen, Mikkel ;

Krebs, Frederik Christian .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2010, 94 (05) :774-780

[5] Tuning the Properties of Polymer Bulk Heterojunction Solar Cells by Adjusting Fullerene Size to Control Intercalation [J].

Cates, Nichole C. ;

Gysel, Roman ;

Beiley, Zach ;

Miller, Chad E. ;

Toney, Michael F. ;

Heeney, Martin ;

McCulloch, Iain ;

McGehee, Michael D. .

NANO LETTERS, 2009, 9 (12) :4153-4157

[6] Control of Polymer-Packing Orientation in Thin Films through Synthetic Tailoring of Backbone Coplanarity [J].

Chen, Mark S. ;

Niskala, Jeremy R. ;

Unruh, David A. ;

Chu, Crystal K. ;

Lee, Olivia P. ;

Frechet, Jean M. J. .

CHEMISTRY OF MATERIALS, 2013, 25 (20) :4088-4096

[7] How the structural deviations on the backbone of conjugated polymers influence their optoelectronic properties and photovoltaic performance [J].

Chochos, Christos L. ;

Choulis, Stelios A. .

PROGRESS IN POLYMER SCIENCE, 2011, 36 (10) :1326-1414

[8] A facile method for enhancing photovoltaic performance of low-band-gap D-A conjugated polymer for OPVs by controlling the chemical structure [J].

Choi, Min Hee ;

Song, Kwan Wook ;

Heo, Soo Won ;

Han, Yong Woon ;

Moon, Doo Kyung .

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2015, 26 :173-181

[9] Charge transport in organic semiconductors [J].

Coropceanu, Veaceslav ;

Cornil, Jerome ;

da Silva Filho, Demetrio A. ;

Olivier, Yoann ;

Silbey, Robert ;

Bredas, Jean-Luc .

CHEMICAL REVIEWS, 2007, 107 (04) :926-952

[10] Stability of n-type doped conducting polymers and consequences for polymeric microelectronic devices [J].

deLeeuw, DM ;

Simenon, MMJ ;

Brown, AR ;

Einerhand, REF .

SYNTHETIC METALS, 1997, 87 (01) :53-59

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