Non-conjugated polymer as printable electron transport layer for efficient and stable organic photovoltaic cells

Journal of Energy Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Small Singlet–Triplet Gap Terpolymer Donor with a Simple Pt Complex Enables Organic Solar Cells with Low Energy Loss and Over 19.2% Efficiency

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 6, 2025

Suppressing the non-radiative loss in organic solar cells (OSCs) through molecular design remains a significant challenge. Typically, triplet state of semiconductors is lower than charge transfer (CT) state, contributing to substantial via state. Herein, set terpolymers prepared by introducing simple Pt complex block into PM6 polymer backbone. These metalated exhibit high energy (ET1) and small singlet-triplet gap (∆EST), facilitating fast intersystem crossing (ISC) process generate excitons. Consequently, show enhanced exciton lifetime diffusion length, most importantly, effectively suppress recombination terminal channels. Moreover, modifies aggregation polymer, hence optimizing morphology active blends. The PM6-Pt1:L8-BO devices achieve champion power conversion efficiency (PCE) 18.54% (certified as 18.32%), highest reported for date. PCE further increased record 19.24% PM6-Pt1:PM6:L8-BO (0.8:0.2:1.2, wt/wt/wt) ternary devices. Overall, this work provides feasible approach designing with ET1, thereby reducing OSCs.

Язык: Английский

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Advancements in morphology controllable ternary organic solar cells for active layers

Renewable and Sustainable Energy Reviews, Год журнала: 2025, Номер 216, С. 115673 - 115673

Опубликована: Апрель 8, 2025

Язык: Английский

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Non-fused and fused ring non-fullerene acceptors

Current Opinion in Colloid & Interface Science, Год журнала: 2024, Номер unknown, С. 101864 - 101864

Опубликована: Сен. 1, 2024

Язык: Английский

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Upper Layer‐Modulated Pseudo Planar Heterojunction with Metal Complex Acceptor for Efficient and Stable Organic Photovoltaics

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 21, 2024

Modulating self-aggregation and charge transport in the upper acceptor layer of pseudo planar heterojunction (PPHJ) is crucial for enhancing dielectric constant suppressing trap density, leading to efficient stable organic photovoltaics (OPVs). In this work, a metal complex (MCA), PtAC-Cl, selectively incorporated into host Y6 PPHJ regulate morphology fill states. There exists strong chemical interaction between PtAC-Cl Y6, which can promote electron transfer. extend exciton diffusion length resulting enhanced reduced energetic disorder. Consequently, layer-modulated devices with achieved significant power conversion efficiency 18.16%. The universality also demonstrated PM6/eC9 PM6/L8-BO systems, achieving highest PCEs 18.79 19.30%, respectively. All improved are mainly attributed factor (FF) short circuit current (J

Язык: Английский

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Solvent-free synthesis of polysilane-carbazole – A green route to develop fluorescent polysilanes with amplified emission characteristics via bridge intramolecular charge transfer effect

Materials Today Chemistry, Год журнала: 2024, Номер 40, С. 102215 - 102215

Опубликована: Июль 24, 2024

This work presents the synthesis of a new polysilane-carbazole structure (PSCB) by hydrosilylation in solvent-free conditions. For this purpose polyhydrosilane (PSH) with high content methylhydrosilyl groups was mixed 2-(((2-(9H-carbazol-9-yl)ethoxy)carbonyl)amino)ethyl methacrylate (CB) and triturated presence Karstedt catalyst. The reaction proceeds smoothly normal conditions pressure temperature dry atmosphere. chemical resulted polymer determined using Fourier-transform infrared (FTIR) proton nuclear magnetic resonance (1H NMR) spectroscopies. Gel permeation chromatography (GPC) analysis proved completion addition yields. computational reveals electronic structures both CB PSCB molecule highlights significance conformational effects on emission properties. carbazole moiety acts as an electron donor, while polysilane chain serves acceptor, enabling intra-molecular through bridge charge transfer. Fluorescence measurements validate unique structure, demonstrating amplified due to cumulative effect chain. holds promise for various applications, emphasizing its potential optoelectronic devices sensing technologies.

Язык: Английский

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Organic Solar Cells: Principles, materials and working mechanism

Current Opinion in Colloid & Interface Science, Год журнала: 2024, Номер unknown, С. 101893 - 101893

Опубликована: Дек. 1, 2024

Язык: Английский

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Donor-Acceptor-Donor Type Electrode Materials Based on Carbazole-Pyrazino[2,3-g]quinoxaline-Carbazole for High Performance Supercapacitors

Journal of Molecular Structure, Год журнала: 2024, Номер unknown, С. 141307 - 141307

Опубликована: Дек. 1, 2024

Язык: Английский

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