Poly[Bis(4‐Phenyl)(2,4,6‐Trimethylphenyl)Amine] in Perovskite Solar Cells: Advances via Molecular Engineering DOI

Chanhyeok Kim,

Dae Hwan Lee,

Sunkyu Kim

et al.

Solar RRL, Journal Year: 2024, Volume and Issue: 8(9)

Published: March 25, 2024

To improve the performance of perovskite solar cells (PSCs), studying materials that constitute each layer device is important. Among commonly used in hole‐transport (HTL), poly[bis(4‐phenyl)(2,4,6‐trimethylphenyl)amine] (PTAA) stands out as one most employed. This material (HTM) offers many advantages, including thin‐film fabricating feasibility, ease synthesis, and sufficient energy levels. Further, PSCs employing PTAA HTL exhibit a high‐power conversion efficiency. However, it has some drawbacks, low crystallinity poor stability. overcome these limitations, extensive studies focusing on improving its properties by molecular engineering have been conducted. In this review, strategies for structures triaryl amine polymers are introduced. The classified into three groups: backbone engineering, side‐chain substitution, combination both. Furthermore, future directions achieving HTMs with various high‐performance suggested.

Language: Английский

The synergistic strategy of hexaazatrinaphthylene-cyanoindone-based electron transporting material enabling efficient and stable inverted perovskite solar cells DOI
Li Wan, Lingyun Lou, Zhong‐Sheng Wang

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 474, P. 145808 - 145808

Published: Sept. 3, 2023

Language: Английский

Citations

12
Substitution Position Effects on Spiro[Fluorene‐9,9′‐Xanthene]‐Diphenylamine Hole‐Transporting Materials for Perovskite Solar Cells DOI
Mingyuan Han, Xianfu Zhang, Xuepeng Liu

et al.

Solar RRL, Journal Year: 2023, Volume and Issue: 8(1)

Published: Nov. 21, 2023

The molecular structures of hole‐transporting materials (HTMs) have a significant effect on the performance perovskite solar cells (PSCs). In this work, four small‐molecular HTMs (SFX‐1, SFX‐2, SFX‐3, and SFX‐4) are prepared by regulating substitution sites terminal diphenylamine groups spiro[fluorene‐9,9′‐xanthene] core. As SFX‐1 SFX‐2 well‐documented compounds, article adopts original publication's acronyms, referring to them as SFX‐MeOTAD HTM‐FX′, respectively. It is found that exhibit noticeable properties. Among these molecules, whose located at 3,6‐substitution site fluorene side SFX, has high conductivity hole mobility, highest occupied orbital level matches well with perovskite. SFX‐3 also shows better film‐forming properties extraction ability than molecules other sites. Higher power conversion efficiency (PCE) in PSCs comparable traditional spiro‐OMeTAD, but SFX‐3's synthesis cost only about one‐third spiro‐OMeTAD. Furthermore, device utilizing exhibits remarkable stability, surpassing Notably, champion PCE SFX‐3‐based reached 22.42%, marking reported efficiencies among SFX

Language: Английский

Citations

11
Halogenated Hole Selective Contact Enhances Interfacial Weak Bonding of Perovskite Solar Cells DOI
Aili Wang, Mengde Zhai,

Kaihuai Du

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(31)

Published: May 21, 2024

Abstract Weak bonding between the perovskite and charge transport layers can lead to interfacial defects, hindering transfer limiting efficiency stability of solar cells (PSCs). To address this issue, two halogenated spiro[fluorene‐9,9′‐xanthene]‐based molecules (SFX‐DM‐F SFX‐DM‐Cl) are designed as an layer hole materials (HTMs). Both first‐principles simulations experimental results used demonstrate that these improve contact perovskite's Pb(II) HTMs, increasing transfer. The similar structure interlayer HTM also enhances integral, favoring effective transport. PSCs based on SFX‐DM‐Cl achieve power conversion efficiencies 24.8% (0.0625 cm 2 ) 23.1% (1 ). Even after 2000 h at a relative humidity 15–20%, unencapsulated PSC retains 94% its initial efficiency. This work proposes homologous HTMs molecular bridges optimize weak chemical bonds transfer, thereby enabling efficient stable PSCs.

Language: Английский

Citations

4
Alkyl Fluoride Modification‐Enhanced Intermolecular Interactions of Phenoxazine‐Based Hole‐Transporting Materials for Efficient and Stable Inverted Perovskite Solar Cells DOI Open Access

Tonghui Hu,

Yu Chen,

Ruixi Luo

et al.

Solar RRL, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Delicate regulation of halogens in conjugated molecules has emerged as a major strategy to modulate the aggregation organic semiconductor materials for considerable enhancement photovoltaic performance. Herein, three donor–π–donor hole‐transporting materials, B 6 P ‐F , ‐Cl, and ‐Br containing 4,8‐bis(hexyloxy)benzo[1,2‐b:4,5‐b′]dithiophene π‐conjugated linker 10‐(6‐fluorohexyl)‐10 H ‐phenoxazine, 10‐(6‐chlorohexyl)‐10 10‐(6‐bromohexyl)‐10 ‐phenoxazine respectively, donor units, are reported. Differential scanning calorimetry curves, atomic force microscopy, contact angle measurements with perovskite precursors collectively reveal that halogenated alkyl chains attached units influence molecular packing patterns subsequently alter surface interface properties resulting films. Analysis Fourier‐transform infrared absorption spectra implies distinctive may originate from its intermolecular F···π interactions. Benefiting interactions favorable self‐assembly, inverted PSCs based on exhibit decent power conversion efficiency 20.85%, outperforming ‐Cl . Further analysis steady‐state/transient photoluminescence spectra, electrochemical impedance spectroscopy, light intensity‐dependent short‐circuit photocurrent, open‐circuit voltage ( V oc ) indicates distinct assembly facilitated by interactions, enhances efficient interfacial charge transport extraction while suppressing unfavorable recombination, thereby increasing fill factor.

Language: Английский

Citations

0
Unlocking all-perovskite tandem solar cells to ~ 30% efficiency: a simulation and optimization approach with MPA2FPh-BT-BA as a hole selective contact DOI
Ajeet Kumar Singh,

Sumaiya Parveen,

Madan Singh Chauhan

et al.

Journal of Optics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 19, 2025

Language: Английский

Citations

0
Aggregation State Regulation of Molecular Hole Conductors for Light‐Stable Perovskite Photovoltaics DOI
Zheng Zhang, Sijing Wang,

Yuyan Dong

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract The molecular aggregation state of organic hole conductors greatly influences charge collection perovskite solar cells (PSCs). In this study, we optimize the core/periphery steric Cl‐substituent (W1, W2, W3) and regulate by packing interactions. It is demonstrated that W1 with Cl core‐substituent exhibits enhanced crystallization strong intermolecular interactions in contrast to W2 sidechain‐substituent. Conversely, W3 substituent at both core sidechain results most unfavorable stacking. high mobility reinforced interfacial bonding, achieving a remarkable photovoltaic efficiency 24.7%, outperforming other two (W2's 23.9% W3's 20.3%). Furthermore, W1‐ W2‐PSCs retain 95.3% 87.2% their initial after 1,000 hours maximum power point tracking (MPPT), respectively. This work provides fundamental insights into Cl‐substituent‐induced behavior offers delicate approach for designing high‐performance semiconductors.

Language: Английский

Citations

0
Molecular Design of Hole Transport Materials to Immobilize Ion Motion for Photostable Perovskite Solar Cells DOI
Zheng Zhang,

Chenghao Duan,

Sijing Wang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(48)

Published: Aug. 16, 2024

Abstract Poor operational stability is a crucial factor limiting the further application of perovskite solar cells (PSCs). Organic semiconductor layers can be powerful means for reinforcing interfaces and inhibiting ion migration. Herein, two hole‐transporting molecules, pDPA‐SFX mDPA‐SFX, are synthesized with tuned substituent connection sites. The meta ‐substituted mDPA‐SFX results in larger dipole moment, more ordered packing, better charge mobility than pDPA‐SFX, accompanying strong interface bonding on surfaces suppressed motion as well. Importantly, mDPA‐SFX‐based PSCs exhibit an efficiency that has significantly increased from 22.5 % to 24.8 module‐based 19.26 active area 12.95 cm 2 . corresponding cell retain 94.8 its initial at maximum power point tracking (MPPT) after 1,000 h ( T 95 =1,000 h). MPPT 80 lifetime long 2,238 h. This work illustrates small degree structural variation organic compounds leaves considerable room developing new HTMs light stable PSCs.

Language: Английский

Citations

3
Molecular Design of Hole Transport Materials to Immobilize Ion Motion for Photostable Perovskite Solar Cells DOI
Zheng Zhang,

Chenghao Duan,

Sijing Wang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(48)

Published: Aug. 16, 2024

Abstract Poor operational stability is a crucial factor limiting the further application of perovskite solar cells (PSCs). Organic semiconductor layers can be powerful means for reinforcing interfaces and inhibiting ion migration. Herein, two hole‐transporting molecules, pDPA‐SFX mDPA‐SFX, are synthesized with tuned substituent connection sites. The meta ‐substituted mDPA‐SFX results in larger dipole moment, more ordered packing, better charge mobility than pDPA‐SFX, accompanying strong interface bonding on surfaces suppressed motion as well. Importantly, mDPA‐SFX‐based PSCs exhibit an efficiency that has significantly increased from 22.5 % to 24.8 module‐based 19.26 active area 12.95 cm 2 . corresponding cell retain 94.8 its initial at maximum power point tracking (MPPT) after 1,000 h ( T 95 =1,000 h). MPPT 80 lifetime long 2,238 h. This work illustrates small degree structural variation organic compounds leaves considerable room developing new HTMs light stable PSCs.

Language: Английский

Citations

3
Organic Semiconductor Based on N, S‐Containing Crown Ether Enabling Efficient and Stable Perovskite Solar Cells DOI

Kaixing Chen,

Ye Zeng,

Xing Gao

et al.

ChemSusChem, Journal Year: 2023, Volume and Issue: 17(4)

Published: Oct. 23, 2023

Abstract The uncoordinated lead cations are ubiquitous in perovskite films and severely affect the efficiency stability of solar cells (PSCs). In this work, 15‐crown‐5 with various heteroatoms connected to organic semiconductor carbazole diphenylamine, two new compounds, CDT‐S CDT‐N, developed modify Pb 2+ defects through anti‐solvent method. Apart from oxygen atoms, there also N atoms on crown ether ring both S CDT‐S. enhance interaction between ether‐based semiconductors undercoordinated defect perovskite. Particularly, stronger further enhances passivation effect than thereby more effectively suppressing non‐radiative recombination charge carriers. Finally, device treated is up 23.05 %. Moreover, unencapsulated based maintained 90.5 % initial after being stored under dark conditions for 1000 hours, demonstrating good long‐term stability. Our work demonstrates that ethers promising cells, containing multiple could improve devices.

Language: Английский

Citations

7
Acid Doping of PEDOT:PSS Strengthens Interfacial Compatibility toward Efficient and Stable Perovskite Solar Cells DOI

Jidong Deng,

Yinhu Gao,

Yuliang Che

et al.

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(20), P. 9577 - 9585

Published: Oct. 17, 2024

Poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) has been widely applied as a hole transport material in s. Although PEDOT:PSS exhibits the advantages of superior conductivity and low cost, corresponding devices suffer from photovoltaic performance due to unsatisfactory interfacial properties. Here, an acid treatment strategy is developed modify chemical properties by different HX (X = Cl, Br, I) acids. We present evidence effective ion exchange process between show that anion-dependent dedoping leads large variation thin-film conductivity, film hydrophilicity, contact perovskite PEDOT:PSS. treated HCl demonstrates optimal compatibility along with charge collection efficiency, which contributes significantly enhanced device efficiency (17.63%) compared control (14.56%). Moreover, resulting unencapsulated based on long-term stability, maintaining more than 90% their initial after 2355 h, whereas only kept about 47% original PCEs 1120 h. This work indicates effectiveness modulating doping provides efficient way improve solar cells.

Language: Английский

Citations

2