Random Terpolymer Enabling High‐Efficiency Organic Solar Cells Processed by Nonhalogenated Solvent with a Low Nonradiative Energy Loss DOI
Hao Lu,

Hang Wang,

Guangliu Ran

и другие.

Advanced Functional Materials, Год журнала: 2022, Номер 32(34)

Опубликована: Июнь 15, 2022

Abstract Three terpolymer donors (PL1, PL2, and PL3) employing repeating units of two popular photovoltaic polymers PM6 D18 are synthesized by random copolymerization. The terpolymers can reduce the regio‐regularity polymer backbones endow them with much‐enhanced solubility in nonhalogenated solvents such as o ‐xylene. Furthermore, along appearance temperature‐dependent aggregation behavior, indicating adaptability for fabricating organic solar cells (OSCs) eco‐friendly solvent processing. Among them, PL1‐based OSCs display higher more balanced hole electron mobilities, longer charge separation exciton lifetime, better dissociation collection capabilities than parent (PM6 D18) based ones. A power conversion efficiency 18.14% a very low energy loss is achieved on PL1, which much that (15.16%) (16.18%). result provides an effective way to realize high‐performance processing donor materials.

Язык: Английский

Double Asymmetric Core Optimizes Crystal Packing to Enable Selenophene‐based Acceptor with Over 18 % Efficiency in Binary Organic Solar Cells DOI
Xin Zhao, Qiaoshi An, Heng Zhang

и другие.

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(10)

Опубликована: Янв. 2, 2023

Side-chain tailoring is a promising method to optimize the performance of organic solar cells (OSCs). However, asymmetric alkyl chain-based small molecular acceptors (SMAs) are still difficult afford. Herein, we adopted novel n-nonyl/undecyl substitution strategy and synthesized two A-D1 A'D2 -A double isomeric SMAs with selenophene-based central core for OSCs. Crystallographic analysis indicates that AYT9Se11-Cl forms more compact order intermolecular packing compared AYT11Se9-Cl, which contributed higher electron mobility in neat film. Moreover, PM6 : blend film shows better morphology appropriate phase separation distinct face-on orientation than AYT11Se9-Cl. The OSCs obtain superior PCE 18.12 % AYT11Se9-Cl (17.52 %), best efficiency selenium-incorporated binary BHJ Our findings elucidate chains precisely modulates crystal enhances photovoltaic selenophene-incorporated SMAs.

Язык: Английский

Процитировано

79
Structurally Complementary Star‐Shaped Unfused Ring Electron Acceptors with Simultaneously Enhanced Device Parameters for Ternary Organic Solar Cells DOI Open Access

Xu‐Min Huang,

Na Chen,

Dong‐Nai Ye

и другие.

Solar RRL, Год журнала: 2023, Номер 7(11)

Опубликована: Апрель 8, 2023

Ternary strategy has attracted extensive attention for bulk heterojunction organic solar cells (BHJ OSCs) owing to their potentially improved light harvesting, cascaded energy levels, and optimized film morphology of binary BHJs. Herein, three novel star‐shaped unfused ring electron acceptors (SSUFREAs), i.e., H 1–3, with without fluorine‐substituent in phenyl core or peripheral group are designed synthesized as third components via direct C–H arylation incorporate into PM6:Y6 BHJ films. The structure–property–performance dependence study reveals that the isotropic charge transfer, complementary star‐shape structure absorption, energy‐level cascades 1–3 PM6 Y6 allow ternary BHJs have higher power conversion efficiency (PCE) compared BHJ. Among them, involving fluorine‐free 1, 1:PM6:Y6, possesses highest PCE (16.57%) high‐lying frontier molecular orbital enlarged torsion angle, which enhances open‐circuit voltage, inhibits excessive crystallization Y6, facilitates exciton dissociation well collection. findings indicate SSUFREAs great potential serve optimize improve voltage OSCs.

Язык: Английский

Процитировано

78
Over 16% efficiency all-polymer solar cells by sequential deposition DOI

Bangbang Li,

Xuanyu Zhang, Ziang Wu

и другие.

Science China Chemistry, Год журнала: 2022, Номер 65(6), С. 1157 - 1163

Опубликована: Май 10, 2022

Язык: Английский

Процитировано

77
Side-chain engineering of nonfullerene small-molecule acceptors for organic solar cells DOI
Zhenghui Luo, Tongle Xu, Cai’e Zhang

и другие.

Energy & Environmental Science, Год журнала: 2023, Номер 16(7), С. 2732 - 2758

Опубликована: Янв. 1, 2023

This review summarizes the side-chain engineering of nonfullerene small-molecule acceptors (SMAs) in field organic solar cells, discusses key structure–property relationships depth and future directions engineering.

Язык: Английский

Процитировано

77
Random Terpolymer Enabling High‐Efficiency Organic Solar Cells Processed by Nonhalogenated Solvent with a Low Nonradiative Energy Loss DOI
Hao Lu,

Hang Wang,

Guangliu Ran

и другие.

Advanced Functional Materials, Год журнала: 2022, Номер 32(34)

Опубликована: Июнь 15, 2022

Abstract Three terpolymer donors (PL1, PL2, and PL3) employing repeating units of two popular photovoltaic polymers PM6 D18 are synthesized by random copolymerization. The terpolymers can reduce the regio‐regularity polymer backbones endow them with much‐enhanced solubility in nonhalogenated solvents such as o ‐xylene. Furthermore, along appearance temperature‐dependent aggregation behavior, indicating adaptability for fabricating organic solar cells (OSCs) eco‐friendly solvent processing. Among them, PL1‐based OSCs display higher more balanced hole electron mobilities, longer charge separation exciton lifetime, better dissociation collection capabilities than parent (PM6 D18) based ones. A power conversion efficiency 18.14% a very low energy loss is achieved on PL1, which much that (15.16%) (16.18%). result provides an effective way to realize high‐performance processing donor materials.

Язык: Английский

Процитировано

76