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Title: Wide bandgap OPV polymers based on pyridinonedithiophene unit with efficiency >5%

Journal Article · · Chemical Science
DOI:https://doi.org/10.1039/C5SC01427A· OSTI ID:1208670
 [1];  [1];  [2];  [1];  [1];  [1];  [3];  [2];  [1]
  1. Univ. of Chicago, Chicago, IL (United States)
  2. Northwestern Univ., Evanston, IL (United States); Argonne National Lab., Lemont, IL (United States)
  3. Northwestern Univ., Evanston, IL (United States)

We report the properties of a new series of wide band gap photovoltaic polymers based on the N-alkyl 2-pyridone dithiophene (PDT) unit. These polymers are effective bulk heterojunction solar cell materials when blended with phenyl-C71-butyric acid methyl ester (PC71BM). They achieve power conversion efficiencies (up to 5.33%) high for polymers having such large bandgaps, ca. 2.0 eV (optical) and 2.5 eV (electrochemical). As a result, grazing incidence wide-angle X-ray scattering (GIWAXS) reveals strong correlations between π–π stacking distance and regularity, polymer backbone planarity, optical absorption maximum energy, and photovoltaic efficiency.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States); Energy Frontier Research Centers (EFRC) (United States). Argonne-Northwestern Solar Energy Research Center (ANSER)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; SC0001059
OSTI ID:
1208670
Journal Information:
Chemical Science, Vol. 6, Issue 8; ISSN 2041-6520
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

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Recent Advances in Wide-Bandgap Photovoltaic Polymers journal March 2017
A High-Performance D-A Copolymer Based on Dithieno[3,2-b:2′,3′-d]Pyridin-5(4H)-One Unit Compatible with Fullerene and Nonfullerene Acceptors in Solar Cells journal April 2017
A Thieno[3,2-c]Isoquinolin-5(4H)-One Building Block for Efficient Thick-Film Solar Cells journal April 2018
Synthesis of a Thiophene Analogue of Isoindigo by C-H Activation/Oxidative Cyclization and Application of Its Copolymeric Materials to Organic Transistors: Synthesis of a Thiophene Analogue of Isoindigo by C-H Activation/Oxidative Cyclization and Application of Its Copolymeric Materials to Organic Transis journal March 2018
Synthesis of polyfluorenes by oxidative polymerization, their characterization and implementation in organic solar cells journal December 2018
Novel wide band gap copolymers featuring excellent comprehensive performance towards the practical application for organic solar cells journal January 2017
Organic energy-harvesting devices achieving power conversion efficiencies over 20% under ambient indoor lighting journal January 2019
A distorted lactam unit with intramolecular hydrogen bonds as the electron donor of polymer solar cells journal January 2019