Energy levels modulation of small molecule acceptors for polymer solar cells

Liu, Ransheng; Du, Zurong; Wen, Shuguang; Wu, Yao; Zhu, Dangqiang; Yang, Renqiang

doi:10.1016/j.synthmet.2017.12.005

Cited by 11 publications

(11 citation statements)

References 26 publications

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“…A similar comparison has been made between ITIC-4F and ITIC-M 95 with PPDT2FBT as the donor polymer. In contrast to ITIC-4F, ITIC-M possesses electron-donating groups, which increase both the LUMO energy level and the bandgap.…”

Section: Acceptor Materials For Iopvsmentioning

confidence: 90%

“…Different strategies have already shown to increase the bandgap of NFAs, such as increasing the electronic density of the electron acceptor moieties 9,95,105,106 or by twisting the main-chain in the molecular backbone. 107,108 Indeed, because the LUMO is mainly located on the end groups, the energy level can be tuned in function of its electronic densities.…”

Section: Design Perspectives Of Indoor Organic Photovoltaicsmentioning

confidence: 99%

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Recent Progress on Indoor Organic Photovoltaics: From Molecular Design to Production Scale

2020

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Recently, indoor photovoltaics have attracted much interest for their ability to power small electronic devices and sensors, especially with the growth of the Internet of Things (IoT). Due to their absorption covering ambient emission spectra and tunable electronic structures, π-conjugated polymers and small molecules are well-suited for these applications. Among many benefits, including their ink processability, lightweight and flexibility; indoor organic photovoltaics (IOPVs) show power conversion efficiencies (PCE) over 26%. It represents a power output over 30 μW cm -2 under office light (500 lux), which is sufficient to operate many electronic devices and sensors with a relatively small photovoltaic area. This focus review highlights the major advances in the material design for IOPVs and includes some industrial insights to reach the production scale criteria.''Internet of Things'' over the last decades. Data were taken from Web of Science database on January 6 th , 2020.

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Section: Acceptor Materials For Iopvsmentioning

confidence: 90%

Section: Design Perspectives Of Indoor Organic Photovoltaicsmentioning

confidence: 99%

Recent Progress on Indoor Organic Photovoltaics: From Molecular Design to Production Scale

2020

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“…38,39 More recently, the evolving research area focusing on SM non-fullerene acceptors (NFAs) has adopted RCN, and numerous examples containing this structure have been reported. [40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58] RCN-based NFAs have achieved PCEs beyond the 10% mark, [59][60][61][62][63] with some of the highest performers reaching values of 10.78%, 64 12.16%, 65 and 12.27%. 66 The RCN acceptor has also been incorporated into p-conjugated polymer donors, leading to OPV devices with PCEs of 5.30%, 67 8.13%, 68 and 9.12%.…”

Section: Introductionmentioning

confidence: 99%

Photoisomerization of dicyanorhodanine-functionalized thiophenes

Kornman

Weldeab

et al. 2020

Chem. Sci.

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“…[32] Thus,i no ur Scheme 1. Previously reported n-type acceptor-donor-acceptor (A-D-A) small moleculesw ith an indacenodithiophene (IDT) core and cyanated end groups:IDT-IC (I, R 1 = C 16 H 33 [17] ;R 1 = C 6 H 13 [18] ), IDT(TCV) 2 (II), [19] IDT-RCN (III), [20,21] IDTT-2BM( IV); [22] small-molecule semiconductors reported in this work (right, R 2 = C 8 H 17 ).…”

Section: Resultsmentioning

confidence: 99%

One‐Step Sixfold Cyanation of Benzothiadiazole Acceptor Units for Air‐Stable High‐Performance n‐Type Organic Field‐Effect Transistors

et al. 2021

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Reported here is a new high electron affinity acceptor end group for organic semiconductors, 2,1,3‐benzothiadiazole‐4,5,6‐tricarbonitrile (TCNBT). An n‐type organic semiconductor with an indacenodithiophene (IDT) core and TCNBT end groups was synthesized by a sixfold nucleophilic substitution with cyanide on a fluorinated precursor, itself prepared by a direct arylation approach. This one‐step chemical modification significantly impacted the molecular properties: the fluorinated precursor, TFBT IDT, a poor ambipolar semiconductor, was converted into TCNBT IDT, a good n‐type semiconductor. The electron‐deficient end group TCNBT dramatically decreased the energy of the highest occupied and lowest unoccupied molecular orbitals (HOMO/LUMO) compared to the fluorinated analogue and improved the molecular orientation when utilized in n‐type organic field‐effect transistors (OFETs). Solution‐processed OFETs based on TCNBT IDT exhibited a charge‐carrier mobility of up to μe≈0.15 cm2 V−1 s−1 with excellent ambient stability for 100 hours, highlighting the benefits of the cyanated end group and the synthetic approach.

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Energy levels modulation of small molecule acceptors for polymer solar cells

Cited by 11 publications

References 26 publications

Recent Progress on Indoor Organic Photovoltaics: From Molecular Design to Production Scale

Recent Progress on Indoor Organic Photovoltaics: From Molecular Design to Production Scale

Photoisomerization of dicyanorhodanine-functionalized thiophenes

One‐Step Sixfold Cyanation of Benzothiadiazole Acceptor Units for Air‐Stable High‐Performance n‐Type Organic Field‐Effect Transistors

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