Benzo[ghi]perylenetriimide derivatives as effective interfacial passivation and electron transporting layers for inverted perovskite solar cells

Chen, Hung-Cheng; Yu, Yang‐Yen; Chien, Wen-Chen; Peng, Yan‐Cheng; Hsu, Hung-Pin; Kuo, Chi‐Ching; Yang, Chang-Chung; Chen, Chun‐Chao; Chen, Chih‐Ping

doi:10.1016/j.dyepig.2021.109385

Cited by 4 publications

(2 citation statements)

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“…To enhance the extraction of such carriers, embedding an IFL can help to decrease the degree of interfacial charge recombination, as well as the interfacial resistance, surface roughness, and number of surface defects. Previous studies have revealed great success when employing perylene-3,4,9,10-tetracarboxylic acid diimides (PDIs) and their derivatives in PSC applications [ 25 , 26 , 27 , 28 ]. These materials have strong electron-accepting properties and facilitate efficient charge transport.…”

Section: Introductionmentioning

confidence: 99%

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Improving the Performance of Polymer Solar Cells with Benzo[ghi]perylenetriimide-Based Small-Molecules as Interfacial Layers

Chen²,

Shih³

et al. 2022

Polymers

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In this study, we prepared three benzo[ghi]perylenetriimide (BPTI) conjugated molecules as electron-transporting surface-modifying layers for polymer solar cells (PSCs). These three BPTI derivatives differed in the nature of their terminal functionalities, featuring butylamine (C3NH2), propylammonium iodide (C3NH3I), and butyldimethylamine (C3DMA) units, respectively. We evaluated the optoelectronic properties of PTB7-Th: PC71BM blends modified with these interfacial layers, as well as the performance of resulting PSCs. We used UV–Vis spectroscopy, atomic force microscopy, surface energy analysis, ultraviolet photoelectron spectroscopy, and photoelectric flow measurements to examine the phenomena behind the changes in the optoelectronic behavior of these blend films. The presence of a BPTI derivative changed the energy band alignment at the ZnO–active layer interface, leading to the ZnO film behaving more efficiently as an electron-extraction electrode. Modifying the ZnO surface with the BPTI-C3NH3I derivative resulted in a best power conversion efficiency (PCE) of 10.2 ± 0.53% for the PTB7-Th:PC71BM PSC (cf. PCE of the control device of 9.1 ± 0.13%). In addition, modification of a PM6:Y6:PCBM PSC with the BPTI-C3NH3I derivative increased its PCE from 15.6 ± 0.25% to 16.5 ± 0.18%. Thus, BPTI derivatives appear to have potential as IFLs when developing high-performance PSCs, and might also be applicable in other optoelectronic devices.

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Section: Introductionmentioning

confidence: 99%

“…These materials have strong electron-accepting properties and facilitate efficient charge transport. The use of benzo[ ghi ]perylenetriimide (BPTI) as the IFL of a perovskite solar cell attracted our attention for its similar application in PSCs [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Improving the Performance of Polymer Solar Cells with Benzo[ghi]perylenetriimide-Based Small-Molecules as Interfacial Layers

Chen²,

Shih³

et al. 2022

Polymers

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Non‐Fullerene Organic Electron Transport Materials toward Stable and Efficient Inverted Perovskite Photovoltaics

Wang,

Zhang,

Yao

et al. 2024

Small

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Inverted perovskite solar cells (PSCs) attract continuing interest due to their low processing temperature, suppressed hysteresis, and compatibility with tandem cells. Considerable progress has been made with reported power conversion efficiency (PCE) surpassing 26%. Electron transport Materials (ETMs) play a critical role in achieving high‐performance PSCs because they not only govern electron extraction and transport from the perovskite layer to the cathode, but also protect the perovskite from contact with ambient environment. On the other hand, the non‐radiative recombination losses at the perovskite/ETM interface also limits the future development of PSCs. Compared with fullerene derivatives, non‐fullerene n‐type organic semiconductors feature advantages like molecular structure diversity, adjustable energy level, and easy modification. Herein, the non‐fullerene ETM is systematically summarized based on the molecular functionalization strategy. Various types of molecular design approaches for producing non‐fullerene ETM are presented, and the insight on relationship of chemical structure and device performance is discussed. Meantime, the future trend of non‐fullerene ETM is analyzed. It is hoped that this review provides insightful perspective for the innovation of new non‐fullerene ETMs toward more efficient and stable PSCs.

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Structural effect on triphenylamine dibenzofulvene based interfacial hole transporting materials for high-performance inverted perovskite solar cells

Lin¹,

Cheng

Chen

et al. 2022

Materials Chemistry and Physics

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Benzo[ghi]perylenetriimide derivatives as effective interfacial passivation and electron transporting layers for inverted perovskite solar cells

Cited by 4 publications

References 57 publications

Improving the Performance of Polymer Solar Cells with Benzo[ghi]perylenetriimide-Based Small-Molecules as Interfacial Layers

Improving the Performance of Polymer Solar Cells with Benzo[ghi]perylenetriimide-Based Small-Molecules as Interfacial Layers

Non‐Fullerene Organic Electron Transport Materials toward Stable and Efficient Inverted Perovskite Photovoltaics

Structural effect on triphenylamine dibenzofulvene based interfacial hole transporting materials for high-performance inverted perovskite solar cells

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