Enhanced Charge Generation and Transport by Incorporating a Benzotriazole Unit for Low-Cost and High-Efficiency Organic Solar Cells DOI
Xixi Zhang, Xin Wu, J.B. Zhang

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 19(1), P. 900 - 910

Published: Dec. 30, 2024

The photovoltaic performance of organic solar cells (OSCs) has reached the threshold for industrial applications, but cost most high-performance molecules is too high to meet needs industrialization. Herein, two low-cost thiophene-alt-quinoxaline (TQ)-based polymers, PTQ16-10 and PTQ16-20, are designed synthesized by incorporating a benzotriazole (BTA) unit into PTQ10 backbone, with consideration expanding chemical modifiability thus optimizing its properties. incorporation BTA induces improved light absorption, up-shifted energy levels, more orderly molecular π-π packing, enhanced crystallinity, better charge transport capacity polymers. Consequently, PTQ16-10:K2-based OSCs achieve generation faster efficient hole transfer, suppressed carrier recombination, higher mobilities, resulting in an impressive power conversion efficiency (PCE) 18.83%. Meanwhile, introducing second acceptor K6 PTQ16-10:K2 host blend, ternary device achieves excellent PCE 19.52%, which among highest PCEs based on materials. More importantly, this highly cost-effective industrial-scale production, estimated minimum sustainable price only 0.377 $ Wp-1 (Wp = peak-Watt), appreciably lower than that reported OSCs. This work offers rational guide development suggests great potential

Language: Английский

Dual-Donor-Induced Crystallinity Modulation Enables 19.23% Efficiency Organic Solar Cells DOI Creative Commons

Anhai Liang,

Yuqing Sun, Sein Chung

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Nov. 27, 2024

Abstract Trap-assisted charge recombination is one of the primary limitations restricting performance organic solar cells. However, effectively reducing presence traps in photoactive layer remains challenging. Herein, wide bandgap polymer donor PTzBI-dF demonstrated as an effective modulator for enhancing crystallinity bulk heterojunction active layers composed D18 derivatives blended with Y6, leading to dense and ordered molecular packings, thus, improves photoluminescence quenching properties. As a result, photovoltaic devices exhibit reduced trap-assisted losses, achieving optimized power conversion efficiency over 19%. Besides enhancement, comprised third component simultaneously attain decreased current leakage, improved carrier mobilities, suppressed bimolecular recombination, energy losses. The advanced crystalline structures induced by its characteristics, such well-aligned level, complementary absorption spectra, are ascribed promising improvements. Our findings suggest that phase engineering feasible approach tuning packings layer, providing guidelines designing morphology modulators high-performance

Language: Английский

Citations

6
Suppressed Non-Radiative Loss and Efficient Hole Transfer at Small Highest Occupied Molecular Orbital Offset Enables 19.73% Efficiency Binary Organic Solar Cells with Small Efficiency-Cost Gap DOI
Xiaolei Kong,

Nana Yang,

Xixi Zhang

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 15, 2024

Two novel acceptors are designed and synthesized, the PTQ11:PEH-F binary system is highly promising for industrial cost-effective organic photovoltaics.

Language: Английский

Citations

5
Fully Fused Indacenodithiophene‐Centered Small‐Molecule n‐Type Semiconductors for High‐Performance Organic Electronics DOI
Tainan Duan, Jia Wang, Wenrui Shi

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(38)

Published: July 3, 2024

Developing novel n-type organic semiconductors is an on-going research endeavour, given their pivotal roles in electronics and relative scarcity compared to p-type counterparts. In this study, a new strategy was employed synthesize featuring fully fused conjugated backbone. By attaching two sets of adjacent amino formyl groups the indacenodithiophene-based central cores triggering tandem reaction sequence Knoevenagel condensation-intramolecular cyclization, DFA1 DFA2 were realized. The solution-processed field effect transistors based on exhibited unipolar transport character with decent electron mobility ca. 0.10 cm

Language: Английский

Citations

3
Synergistically Halogenated and Methoxylated Thiophene Additive Enables High‐Performance Organic Solar Cells DOI Open Access
Xue Jiang, Peihao Huang,

Kaihuai Tu

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract Morphology control plays a key role for improving efficiency and stability of bulk heterojunctions (BHJ) organic solar cells (OSCs). Halogenation methoxylation are two separate ways successfully adopted in additives morphology optimization. In this work, these strategies combined together. A series halogenated methoxylated thiophenes is designed synthesized as volatile to the evolution BHJ morphology. Specifically, addition 2,5‐diiodo‐3,4‐dimethoxythiophene (MT‐I) prominently improves performance photostability OSCs. Computational simulations reveal noncovalent interactions MT‐I with active layer materials that corresponds inhibition excessive aggregation behavior PM6 Y6 during film‐forming process, facilitating favorable phase separation enhanced molecular stacking. Consequently, PM6:Y6‐based binary OSCs treatment achieves high PCE 17.93%. Furthermore, demonstrates broad feasibility across diverse high‐efficiency OSCs, leading superior photovoltaic (PCE over 18%). This study offers valuable guidance design application high‐performance future endeavors.

Language: Английский

Citations

0
Strategies to achieve efficiencies of over 19% for organic solar cells DOI Creative Commons
Xingchi Xiao,

Malika Chalh,

Zhi Rong Loh

et al.

Cell Reports Physical Science, Journal Year: 2025, Volume and Issue: 6(1), P. 102390 - 102390

Published: Jan. 1, 2025

Language: Английский

Citations

0
Indacenodithiophene‐Based Medium‐Bandgap Guest Acceptor Enables High‐Efficiency Ternary Organic Solar Cells DOI Open Access
Nailiang Qiu, Chunyan Liu, Tengteng Zhang

et al.

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

The ternary organic solar cells (OSCs) have been proven to be an effective strategy for achieving high power conversion efficiency (PCE), exhibiting substantial potential continuous enhancement of device performance. In this work, a novel nonfullerene acceptor, IDT-FN, is developed utilizing renowned indacenodithiophene (IDT) core and moderately intense electron-withdrawing terminal groups, serving as the third component in OSCs. IDT-FN demonstrates excellent complementary light absorption cascaded energy levels with host materials D18 CH-6F, resulting enhanced photon harvesting charge transport within blend. Therefore, even as-cast manages surpass optimal binary device, superior PCE 17.34% compared latter's 17.08%. Through optimization, devices attain impressive 18.32%, accompanied by open-circuit voltage (Voc) 0.897 V, fill factor 0.745, short-circuit current density (Jsc) 27.41 mA cm-2. This significant success IDT-based medium-bandgap guests achieve state-of-the-art

Language: Английский

Citations

0
Suppressing Voltage Loss and Improving Charge Generation via Fluorinated Molecular Backbone of Low-Cost Polymers for Efficient Organic Solar Cells DOI
Xixi Zhang, Xin Wu, J.B. Zhang

et al.

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

High efficiency and low cost are indispensable for the industrialization of organic solar cells (OSCs), which urgently needs to be addressed. Herein, three simple-structure terpolymer donors, PTQ13-5, PTQ13-10, PTQ13-15, developed by embedding a simple fluorinated unit 3-fluorothiophene (T-F) into molecular backbone polymer PTQ10 pursue low-cost high-efficiency photovoltaic molecules. Three terpolymers show obviously characteristics due their short synthesis routes high total synthetic yields from cheap raw materials. The introduction T-F leads blue-shifted absorption, down-shifted HOMO levels, more favored aggregation morphology terpolymers, mainly strong electron-withdrawing property F atom, along with presence noncovalent F···H interactions. As result, PTQ13-5-based OSC achieves enhanced power conversion (PCE) 18.42% suppressed voltage loss (Vloss) because nonradiative 0.189 eV charge generation; this is one highest PCEs OSCs based on This work suggests that fluorination an effective strategy suppress Vloss improve generation OSCs, it offers rational guide in design molecules performance.

Language: Английский

Citations

0
Fully Fused Indacenodithiophene‐Centered Small‐Molecule n‐Type Semiconductors for High‐Performance Organic Electronics DOI
Tainan Duan, Jia Wang, Wenrui Shi

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(38)

Published: July 3, 2024

Abstract Developing novel n‐type organic semiconductors is an on‐going research endeavour, given their pivotal roles in electronics and relative scarcity compared to p‐type counterparts. In this study, a new strategy was employed synthesize featuring fully fused conjugated backbone. By attaching two sets of adjacent amino formyl groups the indacenodithiophene‐based central cores triggering tandem reaction sequence Knoevenagel condensation‐intramolecular cyclization, DFA1 DFA2 were realized. The solution‐processed field effect transistors based on exhibited unipolar transport character with decent electron mobility ca. 0.10 cm 2 V −1 s (ca. 0.038 for devices). When employing as third component solar cells, high power conversion efficiency 19.2 % can be achieved ternary devices fabricated PM6 : L8‐BO DFA1. This work provides pathway molecular engineering semiconductors, propelling relevant forward.

Language: Английский

Citations

1
A Low‐Cost 3D Spirobifluorene‐Based Acceptor for High‐Performance Ternary Organic Solar Cells DOI
Chunyan Liu, Nailiang Qiu, Haonan Liu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 2, 2024

Abstract The advantages of 3D materials as guest components ternary organic solar cells (TOSCs) are being realized, showing great potential in improving device performance. However, the correlation between their distinctive structure and performance remains largely unexplored. Herein, a acceptor named SF‐HR is cost‐effectively synthesized utilizing twisted spirofluorene core. shows an edge‐on oriented packing but not disordered aggregation other molecules. When introduced into D18:Y6 binary system, can induce more predominant face‐on finer domain size blend, which facilitates exciton dissociation multi‐direction charge transport. Besides, exhibits complementary absorption cascaded energy levels with D18 Y6, contributing to improvement short‐circuit current density ( J sc ) open‐circuit voltage V oc ), respectively. Accordingly, optimized achieves higher 0.893 V, 27.13 mA cm −2 , fill factor (FF) 77.8%, respectively, than that host device, yielding excellent efficiency 18.85%. This success demonstrates utilization crystalline material component represents promising strategy for achieving state‐of‐the‐art OSCs, conducive understanding relationship from new perspective.

Language: Английский

Citations

0
Enhanced Charge Generation and Transport by Incorporating a Benzotriazole Unit for Low-Cost and High-Efficiency Organic Solar Cells DOI
Xixi Zhang, Xin Wu, J.B. Zhang

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 19(1), P. 900 - 910

Published: Dec. 30, 2024

The photovoltaic performance of organic solar cells (OSCs) has reached the threshold for industrial applications, but cost most high-performance molecules is too high to meet needs industrialization. Herein, two low-cost thiophene-alt-quinoxaline (TQ)-based polymers, PTQ16-10 and PTQ16-20, are designed synthesized by incorporating a benzotriazole (BTA) unit into PTQ10 backbone, with consideration expanding chemical modifiability thus optimizing its properties. incorporation BTA induces improved light absorption, up-shifted energy levels, more orderly molecular π-π packing, enhanced crystallinity, better charge transport capacity polymers. Consequently, PTQ16-10:K2-based OSCs achieve generation faster efficient hole transfer, suppressed carrier recombination, higher mobilities, resulting in an impressive power conversion efficiency (PCE) 18.83%. Meanwhile, introducing second acceptor K6 PTQ16-10:K2 host blend, ternary device achieves excellent PCE 19.52%, which among highest PCEs based on materials. More importantly, this highly cost-effective industrial-scale production, estimated minimum sustainable price only 0.377 $ Wp-1 (Wp = peak-Watt), appreciably lower than that reported OSCs. This work offers rational guide development suggests great potential

Language: Английский

Citations

0