Effect of π-Bridge Ring Fusion on the Wide-Bandgap Donor and Its Application for High-Efficiency All Small-Molecule Tandem Solar Cells DOI
Sora Oh, Du Hyeon Ryu, Seon‐Mi Jin

и другие.

ACS Applied Energy Materials, Год журнала: 2024, Номер 7(11), С. 5005 - 5017

Опубликована: Май 28, 2024

The fused thiophene derivative as a π-bridged moiety affects optical/electrochemical properties, intermolecular packing, and charge carrier transporting behavior in small molecule (SM) donor. In this work, we developed wide-bandgap SM donors, SM1 to SM4, containing different π-extended conjugation bridges successfully utilized them for all organic solar cells (ASM OSCs). By replacing the π-bridge from nonfused fully fused, light absorption frontier molecular orbital properties were modulated due effectively changing interaction with π-lengths. dithieno[3,2-b:2′,3′-d]thiophene bridge-based SM4 shows superior planar geometry. When incorporating PC71BM an acceptor, ASM OSC achieves remarkable VOC of 0.97 V FF 75%. Moreover, was applied bottom cell on tandem device because exhibits strong short-wavelength efficient transport/collection, attaining highest efficiency 17.25% reported OSCs literature so far. These results demonstrate that solution-processed is excellent candidate, engineering optimizes physicochemical single- double-junction OSCs.

Язык: Английский

Recent Progress of Solution‐Processed Thickness‐Insensitive Cathode Interlayers for High‐Performance Organic Solar Cells DOI
Ping Cai, Can Song,

Yating Du

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Abstract Organic solar cells (OSCs) have shown great applications potential in flexible/wearable electronics, indoor photovoltaics and so on. The efficiencies of single‐junction OSCs exceeded 19%, making the commercialization brighter. Large‐area printing fabrication is a key way to OSCs, solution‐processed thickness‐insensitive cathode interlayers (CILs) are urgently needed for large‐area fabrication. High electron mobility interfacial materials (CIMs) critical enable CILs. N‐type self‐doped characteristics can endow organic CIMs with high mobility. Different type n‐type show different applicability conventional inverted OSCs. External dopants further increase hybrid blends. Particularly, ZnO doped dyes achieve superior photoconductivity This review focuses on CILs high‐performance In small molecules polymers, external n‐doped blends as summarized. small‐molecular electrolytes polyelectrolytes, PEI‐/PEIE‐based (including organic‐organic ZnO‐organic) summarized relationships between particular functions chemical structures highlighted. Finally, summary outlook provided.

Язык: Английский

Процитировано

6
Improving the Performance of Ternary Organic Solar Cells via Optimizing Molecular Orientation and 3D Charge Transport DOI Open Access
Bing Zheng, Xiaoling Ma, Yuchen Yue

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 20, 2025

Abstract Recently, through in‐depth investigations of ternary organic solar cells (OSCs), scientists have discovered that small molecules (SMs) with edge‐on orientation serving as the third component can boost transverse charge transport and consequently enhance device performance. Nevertheless, little research has been conducted on determining how to select an appropriate improve 3D transport. Herein, four SMs are designed by gradually increasing quantity alkyl thiophene π‐bridge adjust their crystallinity orientation. The resulting show similar but different crystalline degrees, due complex effects molecular steric hindrance extended conjugation. After introduction SMs, most devices exhibited a pronounced improvement in power conversion efficiencies (PCEs) than control binary counterparts. An elegant PCE 19.02% fill factor approaching 80% collected OSCs. A balanced bimodal mechanism is proposed effectively elucidated blend film, enabling charges bypass interfering domains thereby This provides guidance for development SM components form percolation paths facilitate subsequently performance devices.

Язык: Английский

Процитировано

1
Medium‐Bandgap Acceptors for Efficient Ternary Organic Solar Cells Achieved by End‐Group Engineering DOI
Long Chen, Yuanyuan Liu, Huiqiu Deng

и другие.

Solar RRL, Год журнала: 2025, Номер unknown

Опубликована: Март 18, 2025

The ternary strategy has been evidenced as one of the most crucial methods to improve photovoltaic performance organic solar cells. However, selection and design third components are decisive factors facilitating progress cells (TOSCs). In this study, focuses concentrated on D18‐Cl:N3 binary host device by developing a weakly electron‐withdrawing end group synthesizing guest acceptor, BTP‐CM, which holds similar backbone N3. structure resemblance ensures good compatibility molecule with N3, improves charge transport reduces recombination. Thereby, D18‐Cl:N3:BTP‐CM‐based TOSC exhibits an improved power conversion efficiency 18.32%, compared 17.13% device. This work provides effective for acceptors, aims introduce new groups obtain molecules complementary absorptions matched energy levels while preserving molecular acceptor.

Язык: Английский

Процитировано

1
Organic Solar Cells Based on Non‐Fullerene Low Molecular Weight Organic Semiconductor Molecules DOI
Fernando Langa, Pilar de la Cruz, Ganesh D. Sharma

и другие.

ChemSusChem, Год журнала: 2024, Номер unknown

Опубликована: Сен. 6, 2024

Abstract The development of narrow bandgap A‐D‐A‐ and ADA′DA‐type non‐fullerene small molecule acceptors (NFSMAs) along with donors (SMDs) have led to significant progress in all‐small organic solar cells. Remarkable power conversion efficiencies, nearing the range 17–18 %, been realized. These efficiency values are on par those achieved OSCs based polymeric donors. commercial application photovoltaic technology requires design more efficient conjugated acceptors. In recent years precise tuning optoelectronic properties has attracted considerable attention contributed greatly advancement all‐SM‐OSCs. Several reviews published this field, but focus review concerns advances research using SMDs NFSMAs from 2018 present. covers made binary ternary OSCs, effects solid additives performance all‐SM‐OSCs, recently developed layer‐by‐layer deposition method for these OSCs. Finally, we present our perspectives a concise outlook further all‐SM‐OSCs their application.

Язык: Английский

Процитировано

2
Effect of π-Bridge Ring Fusion on the Wide-Bandgap Donor and Its Application for High-Efficiency All Small-Molecule Tandem Solar Cells DOI
Sora Oh, Du Hyeon Ryu, Seon‐Mi Jin

и другие.

ACS Applied Energy Materials, Год журнала: 2024, Номер 7(11), С. 5005 - 5017

Опубликована: Май 28, 2024

The fused thiophene derivative as a π-bridged moiety affects optical/electrochemical properties, intermolecular packing, and charge carrier transporting behavior in small molecule (SM) donor. In this work, we developed wide-bandgap SM donors, SM1 to SM4, containing different π-extended conjugation bridges successfully utilized them for all organic solar cells (ASM OSCs). By replacing the π-bridge from nonfused fully fused, light absorption frontier molecular orbital properties were modulated due effectively changing interaction with π-lengths. dithieno[3,2-b:2′,3′-d]thiophene bridge-based SM4 shows superior planar geometry. When incorporating PC71BM an acceptor, ASM OSC achieves remarkable VOC of 0.97 V FF 75%. Moreover, was applied bottom cell on tandem device because exhibits strong short-wavelength efficient transport/collection, attaining highest efficiency 17.25% reported OSCs literature so far. These results demonstrate that solution-processed is excellent candidate, engineering optimizes physicochemical single- double-junction OSCs.

Язык: Английский

Процитировано

1