Academic Journal
Constructing D-A copolymers based on thiophene-fused benzotriazole units containing different alkyl side-chains for non-fullerene polymer solar cells
| العنوان: | Constructing D-A copolymers based on thiophene-fused benzotriazole units containing different alkyl side-chains for non-fullerene polymer solar cells |
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| المؤلفون: | Jiang, Xiu, Yang, Yang, Zhu, Jingshuai, Lau, Tsz-Ki, Cheng, Pei, Lu, Xinhui, Zhan, Xiaowei, Chen, Xingguo |
| المساهمون: | Chen, XG (reprint author), Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Organ & Polymer Optoelect Mat, Wuhan 430072, Hubei, Peoples R China., Zhan, XW (reprint author), Peking Univ, Dept Mat Sci & Engn, Coll Engn, Key Lab Polymer Chem & Phys,Minist Educ, Beijing 100871, Peoples R China., Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Organ & Polymer Optoelect Mat, Wuhan 430072, Hubei, Peoples R China., Peking Univ, Dept Mat Sci & Engn, Coll Engn, Key Lab Polymer Chem & Phys,Minist Educ, Beijing 100871, Peoples R China., Chinese Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China. |
| المصدر: | SCI |
| بيانات النشر: | JOURNAL OF MATERIALS CHEMISTRY C |
| سنة النشر: | 2017 |
| المجموعة: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| مصطلحات موضوعية: | ENERGY-LEVEL MODULATION, HIGH-PERFORMANCE, ELECTRON-ACCEPTORS, CONJUGATED POLYMER, BANDGAP POLYMER, HIGH-EFFICIENCY |
| الوصف: | A series of D-A copolymers (P1-P3) based on a thiophene fused benzotriazole (BTAZT) unit and a 4,8-bis(4-fluorothiophen-2-yl)benzo[1,2-b: 4,5-b'] dithiophene (BDTFT) unit have been designed and synthesized as electron-donating materials for non-fullerene polymer solar cells (PSCs) with ITIC as an electron-accepting material. The fusion of a thiophene ring with a BTAZ unit and introduction of a fluorine atom at the BDTT unit have been concurrently performed to regulate the absorption properties and energy levels, and two different alkyl side-chains have also been introduced to BTAZT and BDTFT units, respectively, to investigate the influence of side-chains on the properties of the polymers as well as the photovoltaic performances of the PSCs. The photovoltaic performance evaluation in combination with morphology characterization indicates that the introduction of a 2-ethylhexyl group simultaneously at BTAZT and BDTFT units is favourable for intermolecular pi-pi interaction that improves the morphologies and crystalline domain of P1: ITIC blend film, thus enhancing the charge mobility and the short-circuit current density (J(sc)). But the large steric hindrance of the 2-butyloctyl group to replace the 2-ethylhexyl group at BDTFT (P2) or BTAZT (P3) deteriorates intermolecular interaction that leads to the decrease of charge mobility and poor Jsc. Thus, P1 based PSCs exhibit the highest power conversion efficiency of 7.14% with the best J(sc) (14.11 +/- 0.27 mA cm(-2)) and fill factor (63.41 +/- 1.46%) among P1-P3 polymers. ; National Natural Science Foundation of China [51173138] ; SCI(E) ; ARTICLE ; 32 ; 8179-8186 ; 5 |
| نوع الوثيقة: | journal/newspaper |
| اللغة: | English |
| تدمد: | 2050-7526 2050-7534 |
| Relation: | JOURNAL OF MATERIALS CHEMISTRY C.2017,5(32),8179-8186.; 1905437; http://hdl.handle.net/20.500.11897/471367; WOS:000407815800021 |
| DOI: | 10.1039/c7tc02098h |
| الاتاحة: | https://hdl.handle.net/20.500.11897/471367 https://doi.org/10.1039/c7tc02098h |
| رقم الانضمام: | edsbas.2C9577E2 |
| قاعدة البيانات: | BASE |
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