Journal ArticleDOI
Non-fullerene acceptors for organic photovoltaics: an emerging horizon
Yuze Lin,Xiaowei Zhan +1 more
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TLDR
Non-fullerene acceptors are undergoing rapid development and are emerging as a hot area of focus in the field of organic semiconductors as discussed by the authors, which will not only retain the favorable electron-accepting and transporting properties of fullerenes but also overcome their insufficiencies.Abstract:
Although fullerenes and their derivatives, such as PCBM, have been the dominant electron-acceptor materials in organic photovoltaic cells (OPVs), they suffer from some disadvantages, such as weak absorption in the visible spectral region, limited spectral breadth and difficulty in variably tuning the band gap. It is necessary to explore non-fullerene electron acceptors that will not only retain the favorable electron-accepting and transporting properties of fullerenes but also overcome their insufficiencies. After a decade of mediocrity, non-fullerene acceptors are undergoing rapid development and are emerging as a hot area of focus in the field of organic semiconductors. Solution-processed bulk heterojunction (BHJ) OPVs based on non-fullerene acceptors have shown encouraging power conversion efficiencies of over 4%. This article reviews recent developments in several classes of solution-processable non-fullerene acceptors for BHJ OPVs. The remaining problems and challenges along with the key research directions in the near future are discussed.read more
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Journal ArticleDOI
An electron acceptor challenging fullerenes for efficient polymer solar cells.
TL;DR: 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.
Journal ArticleDOI
Non-fullerene acceptors for organic solar cells
TL;DR: Non-fullerene acceptors (NFAs) are currently a major focus of research in the development of bulk-heterojunction organic solar cells (OSCs) as mentioned in this paper.
Journal ArticleDOI
Fullerene-Free Polymer Solar Cells with over 11% Efficiency and Excellent Thermal Stability
TL;DR: A nonfullerene-based polymer solar cell (PSC) that significantly outperforms fullerene -based PSCs with respect to the power-conversion efficiency and excellent thermal stability is demonstrated for the first time.
Journal ArticleDOI
Perylene Bisimide Dye Assemblies as Archetype Functional Supramolecular Materials
Frank Würthner,Chantu R. Saha-Möller,Benjamin Fimmel,Soichiro Ogi,Pawaret Leowanawat,David Schmidt +5 more
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High-efficiency and air-stable P3HT-based polymer solar cells with a new non-fullerene acceptor
Sarah Holliday,Raja Shahid Ashraf,Andrew Wadsworth,Derya Baran,Syeda Amber Yousaf,Christian B. Nielsen,Ching-Hong Tan,Stoichko D. Dimitrov,Zhengrong Shang,Nicola Gasparini,Maha A. Alamoudi,Frédéric Laquai,Christoph J. Brabec,Alberto Salleo,James R. Durrant,Iain McCulloch,Iain McCulloch +16 more
TL;DR: A new non-fullerene acceptor that has been specifically designed to give improved performance alongside the wide bandgap donor poly(3-hexylthiophene), a polymer with significantly better prospects for commercial OPV due to its relative scalability and stability is presented.
References
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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.