Mapping Spatial Strain Distribution and Its Effects on Optoelectronic Properties in Wrinkled Perovskite Films DOI

Zhuo Xue,

Li Wang, Wei Zeng

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(36), P. 9255 - 9262

Published: Sept. 3, 2024

Organic–inorganic halide perovskite films, fabricated by using the antisolvent method, have garnered intense attention for their application in high-efficiency and stable solar cells. These films characteristically develop periodic wrinkled microstructures. Previous research has indicated that macroscopic residual strain significantly influences optoelectronic behaviors of these films. However, detailed interplay between morphology, distribution, local photophysical properties at micro- nanoscale not been fully elucidated. Here, we explore microscopic morphology–strain–property relationship within employing correlative micro-optical nanoelectrical microscopy techniques. Microphotoluminescence (PL) mapping supplemented situ PL measurements identifies a heterogeneous spatial distribution across microstructural hills valleys. Additionally, light-intensity-dependent photoconductive atomic force reveals valleys experiencing less compressive exhibit lower conductivity higher propensity ion migration. The findings underscore potential targeted engineering to optimize performance longevity

Language: Английский

Constructing Stable Perovskite with Small Molecule Bridge Interface Passivation DOI Open Access
Kai Wang,

Bo Yu,

Changqing Lin

et al.

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

Published: Jan. 5, 2025

Abstract The interfaces of each layer in perovskite solar cells (PSCs) have a significant impact on the charge transfer and recombination. Especially, interface between hole transport (HTL) p‐i‐n type PSCs significantly affects contact characteristics HTL perovskite, hindering further improvements performance stability. Herein, small molecule 9‐Fluorenylmethoxycarbonyl chloride (9‐YT) is introduced as bridge for PSCs, which enhances interaction self‐assembly molecules (SAMs) perovskite. conjugated backbone 9‐YT can interact with SAM (MeO‐2PACz) by π–π stacking reaction. Moreover, also improves interfacial through strong interactions where carbonyl groups Cl atoms uncoordinated Pb 2+ layer. incorporation demonstrated to markedly enhance extraction at perovskite/hole interface, optimize energy level alignment, mitigate recombination, passivate defects Finally, device treated achieves power conversion efficiency (PCE) 24.82%. At same time, still maintain 92.6% original PCE after long‐term stability test 1200 h.

Language: Английский

Citations

4
Space-Charge-Limited Current Measurements: A Problematic Technique for Metal Halide Perovskites DOI
Vincent M. Le Corre

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: unknown, P. 10001 - 10008

Published: Sept. 24, 2024

Space-charge-limited current (SCLC) measurements play a crucial role in the electrical characterization of semiconductors, particularly for metal halide perovskites. Accurate reporting and analysis SCLC are essential gaining meaningful insights into charge transport defect density these systems. Unfortunately, performing on perovskites is complicated by their mixed electronic-ionic conductivity. This complexity led to data often being incorrectly analyzed using simplified models unsuitable materials reported without information about how were performed. In light recently published data, common challenges perovskite addressed, solutions discussed this paper. The applicability often-used analytical models, overlooked issues related ionic-electronic conductivity perovskites, creating single-carrier devices investigated drift-diffusion simulations. Finally, guidelines more accurate improved provided.

Language: Английский

Citations

10
In situ Crosslinked Robust Molecular Zipper at the Buried Interface for Perovskite Photovoltaics DOI Open Access

Yingyi Cao,

Xu Zhang, Ke Zhao

et al.

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

Published: Feb. 16, 2025

Abstract The brittle buried interface, characterized by weak adhesion to the substrate, numerous imperfections, and unfavorable strain, poses a significant challenge that impairs overall performance long‐term stability of perovskite solar cells (PSCs). Herein, robust molecular zipper is constructed through in situ polymerization self‐assembly monomer 4‐vinylbenzoic acid (VA), tightly link interface substrate n‐i‐p PSCs with an adhesive strength as high 10.77 MPa. modified exhibits improved morphology, suppressed defects, released matched energy level alignment. resulting deliver absolute gain ≥1.67% champion power conversion efficiency based on both one‐step deposition protocol two‐step one, demonstrating universality this strategy across different film‐processing scenarios. unencapsulated can retain 94.2% their initial after 550 h linear extrapolated T 90 value 1230 h, per ISOS‐L‐2 protocol. This work provides facile reinforce PSCs.

Language: Английский

Citations

2
Micromolecule Postdeposition Process for Highly Efficient Inverted Perovskite Solar Cells DOI

Bing’e Li,

Jun‐Jie Xing,

Vlad Budnik

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 14269 - 14277

Published: Feb. 24, 2025

Inverted perovskite solar cells (PSCs) have achieved great development, contributed by the advance of self-assembled monolayer (SAM) hole-transporting layers (HTLs) due to their distinctive molecular designability. However, SAM HTLs still present challenges achieving a compact and ordered surface, resulting in vacancies defects at interface as well adversely affecting growth perovskites. In this work, we propose micromolecule postdeposition process design HTL form high-quality perovskites achieve highly efficient inverted PSCs. We introduce etidronic acid (EA) fill reduce improve growing The EA can anchor substrate through P-OH anchors, occupying left MeO-4PACz, simultaneously create interaction with P═O C-OH functional groups. effectively fills reduces interface, passivates perovskites, facilitates carrier transport. Consequently, champion PCE 24.42% is for target PSCs, which much higher than efficiency (20.08%) control. This research provides guided widely applicable strategy development further advances performance

Language: Английский

Citations

1
Low-Temperature Annealing of CdS:In/Cu2ZnSn(S,Se)4 Heterojunction Boosting 14.5% Efficiency Kesterite Solar Cells DOI
Jianming Xu,

Changcheng Cui,

Dongxing Kou

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: unknown, P. 4939 - 4946

Published: Sept. 19, 2024

Language: Английский

Citations

9
Buried Interface Engineering‐Assisted Defects Control and Crystallization Manipulation Enables Stable Perovskite Solar Cells with Efficiency Exceeding 25% DOI Open Access
Pengxu Chen,

Qingshui Zheng,

Zhihang Jin

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Abstract The presence of various defects within the electron transport layer (ETL), perovskite (PVK) layer, and their interfaces significantly affects efficiency, hysteresis, stability solar cells (PSCs) in n–i–p structure. Herein, a defect passivation strategy employing potassium 4‐methoxysalicylate (MSAK) is utilized to efficiently modulate ETL, PVK, ETL/PVK interface. functional groups −COO− −OH MSAK molecules, along with K + cations, effectively reduce tin oxide (SnO 2 ) improve properties. Importantly, MSAK‐SnO provides favorable substrate for growth highly crystallization dense layers. molecules also passivate bottom interface PVK by coordinating under‐coordinated Pb 2+ ions. Furthermore, cations can migrate into further enhancing improving photovoltaic performance PSC devices. PSCs fabricated using based on achieve remarkable power conversion efficiency (PCE) 25.47%, alongside reduced hysteresis enhanced stability. After being stored under ambient conditions 60 days, device maintains nearly 90% its initial PCE, whereas PCE pristine decreases 69.7% after aging.

Language: Английский

Citations

8
Efficient and Stable Perovskite Solar Cells via Multi-Functional Guanylurea Phosphate Zwitterionic Bridging Strategy DOI
Wenguang Zhang,

Zijun Yi,

Yihuai Huang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155169 - 155169

Published: Aug. 24, 2024

Language: Английский

Citations

5
Synergistic Toughening and Strain Releasing Strategy in Metal Halide Perovskite Photovoltaics DOI Open Access

Chenyun Wang,

Chuanzhen Shang,

Haoyang Feng

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 24, 2024

Abstract Metal halide perovskite with high Young's modulus is prone to form cracks when subjected mechanical stresses such as bending, twisting, or impacting, ultimately leading a permanent decline in the performance of their photovoltaic devices. These properties pose challenges durability long‐term service devices and production flexible To address this issue, poly (lipoic acid‐co‐Styrene) elastomer employed modulate films. The peak force quantitative nanomechanical atomic microscopy measurements nanoindentation tests demonstrated reduction modulus, lower preventing formation defects during deformation. Moreover, approach also suppressed non‐radiative recombination solar cells by leveraging interaction between functional groups defects. Through method, rigid inverted attained power conversion efficiency 24.42% alongside remarkable stability. Concurrently, achieved 22.21%. This strategy offers promising avenue for fabricating enhancing durability.

Language: Английский

Citations

4
The Ultrathin Nio Hole-Transporter for Enhanced Photovoltaic Efficiency of Cs0.09fa0.91pbi3-Based Large Area Perovskite Solar Cell Via Synergism of Hole Induction and Extraction DOI
Dawei Liu,

Dingwei Wang,

Rui Wang

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
Small Molecular Organic Hole Transport Layer for Efficient Inverted Perovskite Solar Cells DOI Creative Commons
Shamim Ahmmed, Md. Abdul Karim, Yulu He

et al.

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

Published: Feb. 17, 2025

To commercialize perovskite solar cells (PSCs), it is crucial to develop cost‐effective, dopant‐free hole transport layers (HTLs) that can be processed at low temperatures. Herein, a small molecular material 4,4′,4′‐Tris[2‐naphthyl(phenyl)amino]triphenylamine (2TNATA) was utilized in inverted PSCs as HTL. The position of the highest occupied orbital energy 2TNATA properly aligned with valence band maximum. Moreover, lower temperatures and shows excellent thermal stability. lead (Pb) on exhibited superior crystallinity morphology compared poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) poly[bis(4‐phenyl)(2,4,6‐trimethylphenyl)amine] (PTAA). Furthermore, carrier kinetics 2TNATA‐based PTAA PEDOT:PSS‐based PSCs. Consequently, an outstanding power conversion efficiency (PCE) 20.58% observed from HTL‐based 0.09 cm 2 PSCs, while PEDOT:PSS HTLs‐based showed PCE 19.36% 14.35%, respectively. 1.0 demonstrated impressive 20.04%. results indicate might promising HTL for inexpensive efficient

Language: Английский

Citations

0