Robust carbon–carbon singly bonded electron acceptors for efficient organic photovoltaics

Zhang, Qianqian; Li, Chang‐Zhi

doi:10.1016/j.cej.2022.139312

Cited by 6 publications

(4 citation statements)

References 48 publications

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“…In 2022, Li et al designed a novel Tz-fused terminal indeno ([2,1b]thiazole-8-ylidene) malononitrile (SZ) and combined it with an IDT unit to synthesize an efficient NFA, IDT-SZ, with enhanced planarity and rigidity of the molecular skeleton due to additional nitrogen-sulfur (N…S) noncovalent interaction. [119] More importantly, it not only shows excellent thermal and photostabilities in the environment, but also exhibits high electron mobility. As a result, the PM6:IDT-SZ-based devices obtained a PCE of 10.43%.…”

Section: Other Tz Derivatives-based Photovoltaic Materialsmentioning

confidence: 99%

Recent Advances in Organic Photovoltaic Materials Based on Thiazole‐Containing Heterocycles

Dong

Guo

et al. 2023

Macromol. Rapid Commun.

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Organic solar cells (OSCs) have achieved great progress, driven by the rapid development of wide bandgap electron donors and narrow bandgap non‐fullerene acceptors (NFAs). Among a large number of electron‐accepting (A) building blocks, thiazole (Tz) and its derived fused heterocycles have been widely used to construct photovoltaic materials, especially conjugated polymers. Benefiting from the electron deficiency, rigidity, high planarity, and enhanced intra/intermolecular interactions of Tz‐containing heterocycles, some related photovoltaic materials exhibit proper energy levels, optimized molecular aggregation, and active layer morphology, leading to excellent photovoltaic performance. This review focuses on the progress of Tz‐based photovoltaic materials in the field of OSCs. First, the Tz‐based donor and acceptor photovoltaic materials are reviewed. Then, the materials based on promising Tz‐containing heterocycles, mainly including thiazolo[5,4‐d]thiazole (TzTz), benzo[1,2‐d:4,5‐d’]bis(thiazole) (BBTz), and benzo[d]thiazole (BTz) are summarized and discussed. In addition, the new emerging Tz‐fused structures and their application in OSCs are introduced. Finally, perspectives and outlooks for the further development of Tz‐containing heterocycle‐based photovoltaic materials are proposed.

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Section: Other Tz Derivatives-based Photovoltaic Materialsmentioning

confidence: 99%

Recent Advances in Organic Photovoltaic Materials Based on Thiazole‐Containing Heterocycles

Dong

Guo

et al. 2023

Macromol. Rapid Commun.

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“…[32][33][34] However, this sp3-hybridized carbon is an unstable chemical site in the fluorene-like units. For NFAs, the exocyclic vinyl groups and the sp3-hybridized carbon in fluorene-like units can be easily destructed under light, [20,[35][36][37] causing the destruction of conjugated structures (Figure 1a). That is to say, removing or replacing these unstable chemical structures will be the key to developing the NFAs with high stability.…”

Section: Introductionmentioning

confidence: 99%

Molecule Design of Novel Electron Acceptor with Superior Chemical Stability for Photovoltaic Applications

Wang,

Zhang,

Zhang

et al. 2023

Adv Funct Materials

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The stability of organic photovoltaic (OPV) cells is significantly affected by the decomposition of acceptor–donor–acceptor type non‐fullerene acceptors (NFAs), bringing a significant challenge for the manufacture and applications. Herein, a novel acceptor with superior chemical stability named GS‐22 is designed and synthesized and the relationship between molecular structure and chemical stability is investigated. Based on structure analysis, the exocyclic vinyl groups are proven to exhibit inferior chemical stability and can be easily destructed under an alkaline environment and illumination. Owing to the single‐bonded end groups and the completely non‐fused core, GS‐22 shows remarkably high chemical stability, contributing to obviously improved device stability. Impressively, the fitting T80 (the lifetime when power conversion efficiency retains 80% of the initial value) of the encapsulated OPV cell reaches 3770 h. This work provides an effective molecular design strategy for NFAs with superior chemical stability.

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“…[20] Moreover, the de-mixing of PEDOT away from hygroscopic PSS naturally occurs over time under thermal stress, which could deteriorate the conductivities and energetics of PEDOT: PSS HTL; hence, compromising the PEDOT: PSS/ITO derived OSCs. [21][22][23][24] Compared to the focused studies on photoactive materials and devices, [7,[25][26][27][28] there is a surprising lack of research efforts to tackle the urgent challenges associated with the depletion of non-sustainable ITO and its unstable charge-extraction interface. Herein, we developed a sustainable scheme for recycling nonsustainable indium from discarded optoelectronics to construct high-performance and stable organic solar cells and modules.…”

Section: Introductionmentioning

confidence: 99%

Robust and Sustainable Indium Anode Leading to Efficient and Stable Organic Solar Cells

et al. 2023

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The fast degradation of the charge‐extraction interface at indium tin oxide (ITO) poses a significant obstacle to achieving long‐term stability for organic solar cells (OSCs). Herein, a sustainable approach for recycling non‐sustainable indium to construct efficient and stable OSCs and scale‐up modules is developed. It is revealed that the recovered indium chloride (InCl3) from indium oxide waste can be applied as an effective hole‐selective interfacial layer for the ITO electrode (noted as InCl3–ITO anode) through simple aqueous fabrication, facilitating not only energy level alignment to photoactive blends but also mitigating parasitic absorption and charge recombination losses of the corresponding OSCs. As a result, OSCs and modules consisting of InCl3–ITO anodes achieve remarkable power conversion efficiencies (PCEs) of 18.92% and 15.20% (active area of 18.73 cm2), respectively. More importantly, the InCl3–ITO anode can significantly extend the thermal stability of derived OSCs, with an extrapolated T80 lifetime of ≈10 000 h.

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Robust carbon–carbon singly bonded electron acceptors for efficient organic photovoltaics

Cited by 6 publications

References 48 publications

Recent Advances in Organic Photovoltaic Materials Based on Thiazole‐Containing Heterocycles

Recent Advances in Organic Photovoltaic Materials Based on Thiazole‐Containing Heterocycles

Molecule Design of Novel Electron Acceptor with Superior Chemical Stability for Photovoltaic Applications

Robust and Sustainable Indium Anode Leading to Efficient and Stable Organic Solar Cells

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