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

Chao, Pengjie; Wang, Huan; Qu, Shiwei; Mo, Daize; Meng, Hong; Chen, Wei; He, Feng

doi:10.1021/acs.macromol.7b02045

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

Journal Article · Fri Dec 08 00:00:00 EST 2017 · Macromolecules

DOI:https://doi.org/10.1021/acs.macromol.7b02045· OSTI ID:1417018

Chao, Pengjie ^[1]; Wang, Huan ^[2]; Qu, Shiwei ^[2]; Mo, Daize ^[2];

^[3];

^[4];

^[2]

Southern Univ. of Science and Technology, Shenzhen (China). Dept. of Chemistry; Peking Univ.Shenzhen Graduate School, Shenzhen (China). School of Advanced Materials
Southern Univ. of Science and Technology, Shenzhen (China). Dept. of Chemistry
Peking Univ.Shenzhen Graduate School, Shenzhen (China). School of Advanced Materials
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). Inst. for Molecular Engineering

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.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Natural Science Foundation of China (NSFC)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1417018

Journal Information:: Macromolecules, Vol. 50, Issue 24; ISSN 0024-9297

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 17 works

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