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Title:
A novel naphthyl side-chained benzodithiophene polymer for efficient photovoltaic cells with a high fill factor of 75%
Author: Ding, Dakang1,2; Wang, Jiuxing2,4; Du, Zurong2; Li, Feng3; Chen, Weiye1; Liu, Fushuai1; Li, Haiyan1; Sun, Mingliang1; Yang, Renqiang2
Source: JOURNAL OF MATERIALS CHEMISTRY A
Issued Date: 2017-06-07
Volume: 5, Issue:21, Pages:10430-10436
DOI: 10.1039/c7ta01994g
DOC Type: Article
English Abstract: To study which strategy (extending side chain pi-conjugation with single-bonded or fused aromatic rings) is more effective in improving the photovoltaic properties of benzodithiophene (BDT)-based polymers, naphthyl (NP) and biphenyl (BP) units were introduced to the BDT core as conjugated side chains. Two polymers PBDTNP-DTBO and PBDTBP-DTBO based on NP or BP-substituted BDT and 5,6-bis(octyloxy)-4,7-di(thiophen-2-yl)benzo[c][1,2,5]oxadiazole (DTBO) were designed. These two polymers only exhibited small differences in the chemical structure, but great differences in photovoltaic performance. PBDTNP-DTBO showed a high power conversion efficiency (PCE) of 8.79%, with an open-circuit voltage (V-oc) of 0.82 V, a short-circuit current density (J(sc)) of 14.34 mA cm(-2), and a fill factor (FF) of 74.73%, while PBDTBP-DTBO only showed a maximum PCE of 6.69%, with a V-oc of 0.75 V, a J(sc) of 13.55 mA cm(-2), and a FF of 65.86%. Hence, extending the side chain pi-conjugation system of a BDT-based polymer with naphthyl is a more effective method to enhance the photovoltaic properties.
WOS Headings: Science & Technology ; Physical Sciences ; Technology
WOS Subject: Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS Subject Extended: Chemistry ; Energy & Fuels ; Materials Science
WOS Keyword Plus: OPEN-CIRCUIT VOLTAGE ; ORGANIC SOLAR-CELLS ; BAND-GAP ; CONJUGATED POLYMERS ; SEMICONDUCTING POLYMERS ; PI-CONJUGATION ; AGGREGATION ; PERFORMANCE ; COPOLYMERS ; SUBSTITUENTS
Indexed Type: SCI
Funder: NSFC(51573205 ; 21274134)
Language: 英语
WOS ID: WOS:000402387900038
Citation statistics:
Content Type: 期刊论文
URI: http://ir.qibebt.ac.cn/handle/337004/9663
Appears in Collections:先进有机功能材料团队_期刊论文

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description.institution: 1.Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China
2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China
3.Qingdao Univ Sci & Technol, Sch Polymer Sci & Engn, Minist Educ Shandong Prov, Key Lab Rubber Plast, 53 Zhengzhou Rd, Qingdao 266042, Peoples R China
4.Qingdao Univ, Coll Mat Sci & Engn, Inst Hybrid Mat, Qingdao 266071, Peoples R China

Recommended Citation:
Ding, Dakang,Wang, Jiuxing,Du, Zurong,et al. A novel naphthyl side-chained benzodithiophene polymer for efficient photovoltaic cells with a high fill factor of 75%[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(21):10430-10436.
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