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Journal ArticleDOI

The evolution of small molecular acceptors for organic solar cells: Advances, challenges and prospects

TL;DR: In this paper, the relationship among molecular structures, optical properties, energy levels, device processing methods, and photovoltaic performance are systematically analyzed and summarized for non-fullerene small molecular acceptors (NFSMAs).
About: This article is published in Dyes and Pigments.The article was published on 2021-11-23 and is currently open access. It has received 7 citations till now. The article focuses on the topics: Organic solar cell & Materials science.
Citations
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Journal ArticleDOI
TL;DR: In this paper , two perylene-diimide-based non-fullerene dimeric acceptors were obtained via Stille coupling reaction between bistin compounds (TSn and 2FTSn) and monobromide PDI-HDBr.

4 citations

Journal ArticleDOI
TL;DR: Nonfullerene acceptors have boosted the power conversion efficiencies (PCE) of organic solar cells (OSCs) and the rigid fused-ring molecular skeletons enable decent molecular planarity and stacking orientations, but suffer from tedious stacking orientation problems.
Abstract: Nonfullerene acceptors have boosted the power conversion efficiencies (PCE) of organic solar cells (OSCs). The rigid fused-ring molecular skeletons enable decent molecular planarity and stacking orientations, but suffer from tedious...

4 citations

Journal ArticleDOI
TL;DR: In this paper , a comprehensive overview of organic photovoltaic (OPV) cells, including their materials, technologies, and performance, is provided, along with a comparative analysis of first, second, and third-generation solar cells.
Abstract: This paper provides a comprehensive overview of organic photovoltaic (OPV) cells, including their materials, technologies, and performance. In this context, the historical evolution of PV cell technology is explored, and the classification of PV production technologies is presented, along with a comparative analysis of first, second, and third-generation solar cells. A classification and comparison of PV cells based on materials used is also provided. The working principles and device structures of OPV cells are examined, and a brief comparison between device structures is made, highlighting their advantages, disadvantages, and key features. The various parts of OPV cells are discussed, and their performance, efficiency, and electrical characteristics are reviewed. A detailed SWOT analysis is conducted, identifying promising strengths and opportunities, as well as challenges and threats to the technology. The paper indicates that OPV cells have the potential to revolutionize the solar energy industry due to their low production costs, and ability to produce thin, flexible solar cells. However, challenges such as lower efficiency, durability, and technological limitations still exist. Despite these challenges, the tunability and versatility of organic materials offer promise for future success. The paper concludes by suggesting that future research should focus on addressing the identified challenges and developing new materials and technologies that can further improve the performance and efficiency of OPV cells.

2 citations

Journal ArticleDOI
TL;DR: In this article , two novel NIR region SMAs with an A-D1-D2-A type asymmetric unfused-ring cores were designed and synthesized through the conjugation of a centrosymmetrical dipyran (DTDP) donor, a cyclopentadithiophene (CPDT) donor and halogenated 1,1-dicyanomethylene-3-indanone (DCI) acceptor (A) terminals.

2 citations

Journal ArticleDOI
TL;DR: In this article , four acceptor-donor-acceptor (A-D-A)-type molecules bearing indacenodithiophene as donating central core and various end-capping acceptor units have been designed and synthesized as n-type materials suitable for organic solar cells (OSCs).
Abstract: Four acceptor–donor–acceptor (A–D–A)-type molecules bearing indacenodithiophene as donating central core and various end-capping acceptor units have been designed and synthesised as n-type materials suitable for organic solar cells (OSCs). The studied optical and electrochemical properties supported by theoretical calculations revealed that the nature and the strength of the terminal groups exert a decisive influence on the polymer bulk-heterojunction OSC performance.

1 citations

References
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Journal ArticleDOI
15 Dec 1995-Science
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.
Abstract: The carrier collection efficiency (ηc) and energy conversion efficiency (ηe) of polymer photovoltaic cells were improved by blending of the semiconducting polymer with C60 or its functionalized derivatives. Composite films of poly(2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene) (MEH-PPV) and fullerenes exhibit ηc of about 29 percent of electrons per photon and ηe of about 2.9 percent, efficiencies that are better by more than two orders of magnitude than those that have been achieved with devices made with pure MEH-PPV. The efficient charge separation results from photoinduced electron transfer from the MEH-PPV (as donor) to C60 (as acceptor); the high collection efficiency results from a bicontinuous network of internal donor-acceptor heterojunctions.

9,611 citations

Journal ArticleDOI
17 Apr 2019-Joule
TL;DR: In this paper, a ladder-type electron-deficient core-based central fused ring (Dithienothiophen[3.2-b]- pyrrolobenzothiadiazole) with a benzothiadiadiazoles (BT) core was proposed to fine-tune its absorption and electron affinity.

3,513 citations

Journal ArticleDOI
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.
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.

3,048 citations

Journal ArticleDOI
TL;DR: The PBDB-T-SF:IT-4F-based OSC device showed a record high efficiency, and an efficiency of over 12% can be obtained with a thickness of 100-200 nm, suggesting the promise of fullerene-free OSCs in practical applications.
Abstract: A new polymer donor (PBDB-T-SF) and a new small molecule acceptor (IT-4F) for fullerene-free organic solar cells (OSCs) were designed and synthesized The influences of fluorination on the absorption spectra, molecular energy levels, and charge mobilities of the donor and acceptor were systematically studied The PBDB-T-SF:IT-4F-based OSC device showed a record high efficiency of 131%, and an efficiency of over 12% can be obtained with a thickness of 100–200 nm, suggesting the promise of fullerene-free OSCs in practical applications

2,292 citations