Leveraging Multilayer Hole Selective Layers to Boost Organic Photovoltaic Power Conversion Efficiency

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

Published: Jan. 19, 2025

Hole selective layers (HSLs) play a crucial role in the efficiency of organic photovoltaics (OPVs). Self-assembled monolayers (SAMs) offer powerful approach to engineer interfacial properties HSLs OPVs. In this work, we utilized 2-(9H-carbazol-9-yl)ethyl)phosphonic acid (2PACz) SAM modify ITO/MoO3 interface and surface MoO3, thereby forming multilayer HSLs. 2PACz regulates work function (WF) electrodes, leading more favorable energy level alignment, reduced resistance, facilitated charge carrier transport extraction. The resulting OPV devices demonstrated improved fill factor (FF) power conversion (PCE). Additionally, reduction defects effectively suppressed recombination, ultimately achieving maximum PCE 16.33%. This indicates that design composite with modification is an effective strategy for improving provides ideas further advancing development.

Language: Английский

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An Alcohol-Soluble Cathode Interface Material with Low-Temperature Processing and Thickness Insensitivity for Efficient and Highly Stable Flexible Organic Solar Cells

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

Language: Английский

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Incorporation of Self‐Assembled Monolayer with Polyaniline Backbone as Hole‐Transporting Layer for Organic Solar Cells

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

Published: March 3, 2025

Abstract In addition to the heterojunction layer, interfacial layers also determine performance of organic solar cells (OSCs) owing their great role in promoting charge extraction. Herein, study explores use rarely reported polyaniline (PANI)‐derived polymers as self‐assembled hole‐transporting layer (HTL) OSCs. It is observed that tailoring either spacer groups or polymerization sites can greatly affect material aggregation and thus OSC performance. Specifically, polymer with phenyl (36‐Ph‐PANI) largely outperforms alkyl linkers, which ascribed enhanced aspect ratio dipole moment former molecule contributes substrate coverage hole Moreover, linking PANI carbazole at 2,7‐sites much inferior than 3,6‐positions, attributing higher mobility latter induced by formation radical cation. The combined merits 36‐Ph‐PANI, including high transmittance, appropriate doping, efficient extraction, enable a decent efficiency 15.08% This work provides subtle strategy for developing self‐assemble into monolayers, paving way more stable

Language: Английский

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Efficient Hole Injection From Indium Tin Oxide in Quantum‐Dot Light‐Emitting Diodes

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

Published: March 27, 2025

Abstract PEDOT:PSS thin film is commonly used as a hole injection layer (HIL) in quantum‐dot light‐emitting diodes (QLEDs). However, the realization of QLEDs‐based displays remains challenging due to complex effects acidic surfaces on device performance. Here, it demonstrated that operation QLEDs, metal diffusion from electrodes into QD films can result exciton quenching. By applying an organic molecule [4‐(3,6‐dibromo‐9H‐carbazol‐9‐yl)butyl]phosphonic acid (2BrCzPA), treatment ITO, The role traditional be replaced. formation strong dipoles at ITO/2BrCzPA self‐assembled molecules (SAM) interfaces exhibits excellent abilities. This method leads more efficient generation and outstanding operational stability, enabling QLEDs exhibit superior Specifically, high external quantum efficiencies 15.28%, 12.63%, 14.83% are achieved brightness 34 250, 22 640, 9147 cd m −2 for green, blue, red respectively. work presents high‐performance ITO/SAM QLED eliminates unstable better which promote practical application technology solid‐state lighting.

Language: Английский

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Boosting the performance of ternary solar cells by fine-tuning the distribution of the third component

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162693 - 162693

Published: April 1, 2025

Language: Английский

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A multifunctional strategy to improve the efficiency and stability of organic solar cells via a 2PACz/MA composite hole transport layer

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A novel 2PACz/MA composite HTL strategy improves the efficiency and stability of OSCs by optimizing interface quality.

Language: Английский

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