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Title: From Semi- to Full-Two-Dimensional Conjugated Side-Chain Design: A Way toward Comprehensive Solar Energy Absorption

Abstract

Two polymers with fully two-dimensional (2D) conjugated side chains, 2D-PTB-Th and 2D-PTB-TTh, were synthesized and characterized through simultaneously integrating the 2D-TT and the 2D-BDT monomers onto the polymer backbone. Resulting from the synergistic effect from the conjugated side chains on both monomers, the two polymers showed remarkably efficient absorption of the sunlight and improved pi-pi intermolecular interactions for efficient charge carrier transport. The optimized bulk heterojunction device based on 2D-PTB-Th and PC71BM shows a higher PCE of 9.13% compared to PTB7-Th with a PCE of 8.26%, which corresponds to an approximately 10% improvement in solar energy conversion. Finally, the fully 2D-conjugated side-chain concept reported here developed a new molecular design strategy for polymer materials with enhanced sunlight absorption and efficient solar energy conversion.

Authors:
 [1];  [2];  [2];  [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [2]
  1. Southern Univ. of Science and Technology, Shenzhen (China). Dept. of Chemistry; Peking Univ.Shenzhen Graduate School, Shenzhen (China). School of Advanced Materials
  2. Southern Univ. of Science and Technology, Shenzhen (China). Dept. of Chemistry
  3. Peking Univ.Shenzhen Graduate School, Shenzhen (China). School of Advanced Materials
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). Inst. for Molecular Engineering
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1417018
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Macromolecules
Additional Journal Information:
Journal Volume: 50; Journal Issue: 24; Journal ID: ISSN 0024-9297
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 14 SOLAR ENERGY

Citation Formats

Chao, Pengjie, Wang, Huan, Qu, Shiwei, Mo, Daize, Meng, Hong, Chen, Wei, and He, Feng. From Semi- to Full-Two-Dimensional Conjugated Side-Chain Design: A Way toward Comprehensive Solar Energy Absorption. United States: N. p., 2017. Web. doi:10.1021/acs.macromol.7b02045.
Chao, Pengjie, Wang, Huan, Qu, Shiwei, Mo, Daize, Meng, Hong, Chen, Wei, & He, Feng. From Semi- to Full-Two-Dimensional Conjugated Side-Chain Design: A Way toward Comprehensive Solar Energy Absorption. United States. doi:10.1021/acs.macromol.7b02045.
Chao, Pengjie, Wang, Huan, Qu, Shiwei, Mo, Daize, Meng, Hong, Chen, Wei, and He, Feng. Fri . "From Semi- to Full-Two-Dimensional Conjugated Side-Chain Design: A Way toward Comprehensive Solar Energy Absorption". United States. doi:10.1021/acs.macromol.7b02045. https://www.osti.gov/servlets/purl/1417018.
@article{osti_1417018,
title = {From Semi- to Full-Two-Dimensional Conjugated Side-Chain Design: A Way toward Comprehensive Solar Energy Absorption},
author = {Chao, Pengjie and Wang, Huan and Qu, Shiwei and Mo, Daize and Meng, Hong and Chen, Wei and He, Feng},
abstractNote = {Two polymers with fully two-dimensional (2D) conjugated side chains, 2D-PTB-Th and 2D-PTB-TTh, were synthesized and characterized through simultaneously integrating the 2D-TT and the 2D-BDT monomers onto the polymer backbone. Resulting from the synergistic effect from the conjugated side chains on both monomers, the two polymers showed remarkably efficient absorption of the sunlight and improved pi-pi intermolecular interactions for efficient charge carrier transport. The optimized bulk heterojunction device based on 2D-PTB-Th and PC71BM shows a higher PCE of 9.13% compared to PTB7-Th with a PCE of 8.26%, which corresponds to an approximately 10% improvement in solar energy conversion. Finally, the fully 2D-conjugated side-chain concept reported here developed a new molecular design strategy for polymer materials with enhanced sunlight absorption and efficient solar energy conversion.},
doi = {10.1021/acs.macromol.7b02045},
journal = {Macromolecules},
number = 24,
volume = 50,
place = {United States},
year = {2017},
month = {12}
}

Journal Article:
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