Fine-tuning device performances of small molecule solar cells via the more polarized DPP-attached donor units

被引：52

作者：

Huang, Jianhua ^{[2
]}

Jia, Hui ^{[2
]}

Li, Liangjie ^{[1
,3
]}

Lu, Zhenhuan ^{[2
]}

Zhang, Wenqing ^{[1
,3
]}

He, Weiwei ^{[2
]}

Jiang, Bo ^{[2
]}

Tang, Ailing ^{[2
]}

Tan, Zhan'ao ^{[1
,3
]}

Zhan, Chuanlang ^{[2
]}

Li, Yongfang ^{[1
]}

Yao, Jiannian ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Photochem, Beijing 100080, Peoples R China

[3] N China Elect Power Univ, New & Renewable Energy Beijing Key Lab, State Key Lab Alternate Elect Power Syst Renewabl, Beijing, Peoples R China

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2012年 / 14卷 / 41期

关键词：

LOW-BAND-GAP; OLIGOTHIOPHENE DERIVATIVES; DIKETOPYRROLOPYRROLE CORE; EFFICIENCY; POLYMERS; ULTRASOUND; DESIGN;

D O I：

10.1039/c2cp42050c

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：

Three solution-processable small molecules of DPPT, DPPSe and DPPTT were synthesized by Stille coupling through attaching donor units of thiophene (T), selenophene (Se) and thieno[3,2-b] thiophene (TT) to the diketopyrrolopyrrole (DPP) core, respectively. Replacement of the T donors with the more polarized Se units results in a balance between the a and b direction packing and an obvious increase of the power conversion efficiency (PCE) from 1.90% to 2.33% with the increase of the short-circuit current (I-sc) from 5.59 to 5.81 mA cm(-2) and the open-circuit voltage (V-oc) from 0.78 V to 0.86 under the small molecule/acceptor ratio of 3:1. However, introduction of the conjugation-enlarged TT groups (versus the T units) leads to a decrease of the PCE, down to 1.70%, with a significant decrease of the fill factor (FF) (38% versus 44%), due to its poor film-forming characteristics.

引用

页码：14238 / 14242

页数：5

共 31 条

[1] Donor-acceptor type low band gap polymers: polysquaraines and related systems [J].

Ajayaghosh, A .

CHEMICAL SOCIETY REVIEWS, 2003, 32 (04) :181-191

[2] Solvent Effect Leading to High Performance of Bulk Heterojunction Polymer Solar Cells by Novel Polysilafluorene Derivatives [J].

Cai, Wanzhu ;

Wang, Ming ;

Zhang, Jie ;

Wang, Ergang ;

Yang, Tingbing ;

He, Chao ;

Moon, Ji Sun ;

Wu, Hongbin ;

Gong, Xiong ;

Cao, Yong .

JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (05) :2314-2319

[3] Hole mobility of N,N′-bis(naphthalen-1-yl)-N,N′-bis(phenyl) benzidine investigated by using space-charge-limited currents [J].

Chu, Ta-Ya ;

Song, Ok-Keun .

APPLIED PHYSICS LETTERS, 2007, 90 (20)

[4] Synthesis and photovoltaic properties of two-dimensional conjugated polythiophenes with bi(thienylenevinylene) side chains [J].

Hou, JH ;

Tan, ZA ;

Yan, Y ;

He, YJ ;

Yang, CH ;

Li, YF .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (14) :4911-4916

[5] Synthesis and charge-transporting properties of electron-deficient CN2-fluorene based D-A copolymers [J].

Huang, Jianhua ;

Zhao, Yan ;

Ding, Xunlei ;

Jia, Hui ;

Jiang, Bo ;

Zhang, Zhiguo ;

Zhan, Chuanlang ;

He, Shenggui ;

Pei, Qibing ;

Li, Yongfang ;

Liu, Yunqi ;

Yao, Jiannian .

POLYMER CHEMISTRY, 2012, 3 (08) :2170-2177

[6] Bandgap and Molecular Level Control of the Low-Bandgap Polymers Based on 3,6-Dithiophen-2-yl-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione toward Highly Efficient Polymer Solar Cells [J].

Huo, Lijun ;

Hou, Jianhui ;

Chen, Hsing-Yu ;

Zhang, Shaoqing ;

Jiang, Yang ;

Chen, Teresa L. ;

Yang, Yang .

MACROMOLECULES, 2009, 42 (17) :6564-6571

[7] Electrochemical determination of the ionization potential and electron affinity of poly(9,9-dioctylfluorene) [J].

Janietz, S ;

Bradley, DDC ;

Grell, M ;

Giebeler, C ;

Inbasekaran, M ;

Woo, EP .

APPLIED PHYSICS LETTERS, 1998, 73 (17) :2453-2455

[8] Ultrasound-induced modulations of tetrapeptide hierarchical 1-D self-assembly and underlying molecular structures via sonocrystallization [J].

Ke, Damei ;

Zhan, Chuanlang ;

Li, Xiao ;

Wang, Xi ;

Zeng, Yi ;

Yao, Jiannian .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2009, 337 (01) :54-60

[9] Processing additives for improved efficiency from bulk heterojunction solar cells [J].

Lee, Jae Kwan ;

Ma, Wan Li ;

Brabec, Christoph J. ;

Yuen, Jonathan ;

Moon, Ji Sun ;

Kim, Jin Young ;

Lee, Kwanghee ;

Bazan, Guillermo C. ;

Heeger, Alan J. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (11) :3619-3623

[10] Efficient Small Molecule Bulk Heterojunction Solar Cells with High Fill Factors via Pyrene-Directed Molecular Self-Assembly [J].

Lee, Olivia P. ;

Yiu, Alan T. ;

Beaujuge, Pierre M. ;

Woo, Claire H. ;

Holcombe, Thomas W. ;

Millstone, Jill E. ;

Douglas, Jessica D. ;

Chen, Mark S. ;

Frechet, Jean M. J. .

ADVANCED MATERIALS, 2011, 23 (45) :5359-+

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