Journal ArticleDOI
An electron acceptor challenging fullerenes for efficient polymer solar cells.
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TLDR
A novel non-fullerene electron acceptor (ITIC) that overcomes some of the shortcomings of fullerene acceptors, for example, weak absorption in the visible spectral region and limited energy-level variability, is designed and synthesized.Abstract:
A novel non-fullerene electron acceptor (ITIC) that overcomes some of the shortcomings of fullerene acceptors, for example, weak absorption in the visible spectral region and limited energy-level variability, is designed and synthesized. Fullerene-free polymer solar cells (PSCs) based on the ITIC acceptor are demonstrated to exhibit power conversion effi ciencies of up to 6.8%, a record for fullerene-free PSCs.read more
Citations
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Achieving Thickness-Insensitive Morphology of the Photoactive Layer for Printable Organic Photovoltaic Cells via Side Chain Engineering in Nonfullerene Acceptors
Seongyu Lee,Kwang Hun Park,Jong-Hoon Lee,Hyungcheol Back,Min Jae Sung,Jinho Lee,Jehan Kim,Heejoo Kim,Yun-Hi Kim,Soon-Ki Kwon,Kwanghee Lee +10 more
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Synergistic effects of chlorination and a fully two-dimensional side-chain design on molecular energy level modulation toward non-fullerene photovoltaics
TL;DR: In this article, two new chlorinated D-A polymers were developed that combined two-dimensional conjugated side chains for enhanced intermolecular interactions with chlorine atoms for an elevated open-circuit voltage in photovoltaic devices.
Journal ArticleDOI
A bright outlook on organic photoelectrochemical cells for water splitting
Ludmilla Steier,Sarah Holliday +1 more
TL;DR: In this article, the key advances that have been made over recent years in organic photoelectrochemical (OPEC) cell research, and identifies a pathway forwards combining state-of-the-art materials and device engineering from both the organic photovoltaics and inorganic PEC water splitting communities.
Journal ArticleDOI
High-performance Fullerene-free Polymer Solar Cells with Solution-processed Conjugated Polymers as Anode Interfacial Layer
TL;DR: In this paper, a series of conjugated polymers based on PFS derivatives with π-conjugated 5-(9H-fluoren-2-yl)-2,2′-bithiophene (fluorene-alt-binar-biomethane) backbones were synthesized for their use as the anode interfacial layers (AILs) in the efficient fullerene-free polymer solar cells (PSCs).
Journal ArticleDOI
Enhancing the Photovoltaic Performance of Ladder-Type Dithienocyclopentacarbazole-Based Nonfullerene Acceptors through Fluorination and Side-Chain Engineering
TL;DR: Besides an aromatic polycyclic core with extended π-conjugation, side chains and terminal groups are two other molecular structure factors which can greatly affect the photovoltaic performance as discussed by the authors.
References
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Journal ArticleDOI
Polymer photovoltaic cells : enhanced efficiencies via a network of internal donor-acceptor heterojunctions
TL;DR: In this paper, the carrier collection efficiency and energy conversion efficiency of polymer photovoltaic cells were improved by blending of the semiconducting polymer with C60 or its functionalized derivatives.
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Enhanced power-conversion efficiency in polymer solar cells using an inverted device structure
TL;DR: In this article, the authors showed that PFN can be incorporated into polymer light-emitting devices (PLEDs) to enhance electron injection from high-work-function metals such as aluminium (work function w of 4.3 eV) and gold (w ¼ 5.2 eV).
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Semiconducting π-conjugated systems in field-effect transistors: a material odyssey of organic electronics.
TL;DR: The focus of this review will be on the performance analysis of π-conjugated systems in OFETs, a kind of device consisting of an organic semiconducting layer, a gate insulator layer, and three terminals that provide an important insight into the charge transport of ρconjugate systems.
Journal ArticleDOI
A polymer tandem solar cell with 10.6% power conversion efficiency
Jingbi You,Letian Dou,Ken Yoshimura,Takehito Kato,Kenichiro Ohya,Tom Moriarty,Keith Emery,Chun-Chao Chen,Jing Gao,Gang Li,Yang Yang +10 more
TL;DR: The development of a high-performance low bandgap polymer that enables a solution processed tandem solar cell with certified 10.6% power conversion efficiency under standard reporting conditions, which is the first certified polymer solar cell efficiency over 10%.
Journal ArticleDOI
Molecular design of photovoltaic materials for polymer solar cells: toward suitable electronic energy levels and broad absorption.
TL;DR: This Account discusses the basic requirements and scientific issues in the molecular design of high efficiency photovoltaic molecules, and summarizes recent progress in electronic energy level engineering and absorption spectral broadening of the donor and acceptor photvoltaic materials by my research group and others.