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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Non-halogenated solvent-processed ternary-blend solar cells via alkyl-side-chain engineering of a non-fullerene acceptor and their application in large-area devices
Taeho Lee,Sora Oh,Shafket Rasool,Chang Eun Song,Dongwook Kim,Sang Kyu Lee,Won Suk Shin,Won Suk Shin,Eunhee Lim +8 more
TL;DR: In this article, an asymmetric T2-OEHRH was developed to suppress excessive selfaggregation/crystallization and substantially improve solubility without sacrificing optoelectrical properties.
Journal ArticleDOI
Importance of Terminal Group Pairing of Polymer Donor and Small-Molecule Acceptor in Optimizing Blend Morphology and Voltage Loss of High-Performance Solar Cells
Geon-U Kim,Cheng Sun,Jin Su Park,Hyun Gyeong Lee,Dongchan Lee,Jinwoo Lee,Hyeong Jun Kim,Shinuk Cho,Yun-Hi Kim,Soon-Ki Kwon,Bumjoon J. Kim +10 more
Journal ArticleDOI
Impact of Nonfullerene Acceptor Side Chain Variation on Transistor Mobility
Helen Bristow,Karl J. Thorley,Andrew J. P. White,Andrew Wadsworth,Maxime Babics,Zeinab Hamid,Weimin Zhang,Alexandra F. Paterson,Jan Kosco,Julianna Panidi,Thomas D. Anthopoulos,Iain McCulloch,Iain McCulloch +12 more
Journal ArticleDOI
Fine-tuning HOMO energy levels between PM6 and PBDB-T polymer donors via ternary copolymerization
Xiaojun Li,Xiaojun Li,Ruijie Ma,Tao Liu,Yiqun Xiao,Gaoda Chai,Xinhui Lu,He Yan,Yongfang Li,Yongfang Li +9 more
TL;DR: In this paper, a ternary copolymerization strategy was used to tune the energy level of PM6 via the strategy of Ternary Copolymerisation, and two donor polymers (PL-1 and PL-2) with upshifted HOMO (the highest occupied molecular orbital) energy level were obtained.
Journal ArticleDOI
High-Efficiency Nonfullerene Polymer Solar Cell Enabling by Integration of Film-Morphology Optimization, Donor Selection, and Interfacial Engineering.
TL;DR: This paper reports that a high-efficiency nonfullerene organic solar cell (NF-OSC) with a power conversion efficiency of 6.94 ± 0.27% was obtained by optimizing the hole and electron transportations via following judicious selection of polymer donor and engineering of film-morphology and cathode interlayers.
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%.
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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.