Buried Interface Modification Using Diammonium Ligand Enhances Mechanical Durability of Flexible Perovskite Solar Cells DOI Open Access

Xianbing Ji,

Xin Chen,

Wanlei Dai

et al.

Coatings, Journal Year: 2024, Volume and Issue: 15(1), P. 15 - 15

Published: Dec. 27, 2024

Flexible perovskite solar cells (F-PSCs) hold great potential for lightweight photovoltaic applications due to their flexibility, bending compatibility, and low manufacturing cost. However, tin oxide (SnO2), as a common electron transport layer (ETL) used in F-PSCs, typically suffers from high-density surface defects that hinder the charge extraction efficiency deteriorate crystallization quality of upper film. Additionally, poor buried interface intensifies lattice extrusion strain residue across films, further aggravating mechanical brittleness devices. To address issues, we developed molecular bridging strategy by introducing 2,2′-oxybis(ethylenediamine) dihydrochloride (DO) at perovskite/SnO2 interface. The diammonium groups spacer ligands can achieve bidentate anchoring on SnO2 cooperating with oxygen atom alkyl chain passivate charged tailored properties also endow optimized films significantly alleviate tensile strengthen perovskite’s pliability. As result, F-PSCs achieved champion 23.50%, outperforming value 21.87% control device. Furthermore, devices exhibited excellent robustness, maintaining 90% initial PCE after 6000 cycles radius 4 mm. This work presents reliable synergistic optimization contact interface, contributing development efficient stable F-PSCs.

Language: Английский

Radical p‐Doping Spiro‐OMeTAD for Efficient, Stable and Self‐Healing Flexible Perovskite Solar Cells DOI
Zhengchi Yang, Wei Jin, Yu Liu

et al.

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

Published: April 22, 2025

Abstract Spiro‐OMeTAD is the primary hole transport material (HTM) for high‐efficiency and stable flexible perovskite solar cells (FPSCs). However, slow oxidation rate susceptibility to film cracking under stress in lead reduced device stability efficiency. In this paper, a multi‐functional novel self‐healing nitroxide radical monomer, 4‐[[5‐(1,2‐dithiolane‐3‐yl)‐1‐oxopentyl]amino]‐2,2,6,6‐tetramethylpiperidin‐1‐oxyl (DT‐TEMPO), has been introduced address these challenges. DT‐TEMPO, on one side, enhances mobility conductivity by p‐doping Spiro‐OMeTAD, while boosting charge transfer process from with an optimized energy level alignment other side. Additionally, DT‐TEMPO endows capability through introduction of dynamic breaking reconstructing disulfide bond. The achieve impressive power conversion efficiencies, 25.69% rigid substrates (certified 25.30%), 21.23% mini‐modules, 24.19% substrates. Remarkably, FPSCs retain over 90% their initial efficiency even after 20 000 bending cycles ( r = 6 mm) recover ≈95% value process.

Language: Английский

Citations

0
Toughened Interface by Engineering the Side Group of Conjugated Polymers to Stabilize Flexible Perovskite Solar Modules DOI Open Access
Wei Zhang, Peng Xu, Jin Wang

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Perovskite solar cells (PSCs) have attracted considerable attention due to their high power conversion efficiency (PCE), cost-effective manufacturing processes, as well the potential flexibility. However, a significant challenge commercial applications of PSCs is mechanical reliability. In this work, three naphthalene diimide polymers with distinct donor units are chosen reduce surface trap states and enhance long-term stability reliability photovoltaic devices. The champion rigid incorporating conjugated achieved 373% increase adhesion toughness at interface, PCE 25.5% for 0.16 cm2 single cell 22.3% 30.9 module retain 97% initial after 2000 h continuous light soaking. Especially, flexible exhibited improved stability, achieving 24.8% 20.3% 27.9 module, maintaining 95% 5,000 bending cycles. This study highlights interfacial polymer in enhancing PSCs.

Language: Английский

Citations

0
Rapping up Perovskite Solar Cells With Polymers: A Flexible Point of View DOI Open Access

Mengfan Ma,

Weihui Bi, Yong S. Chu

et al.

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

Published: March 7, 2025

Abstract The application of vast kinds materials in functional layers flexible perovskite solar cells (FPSCs) renders a rapid improvement power conversion efficiency (PCE), yet such characteristic is still outcompeted by their nonflexible counterpart. To date, the key challenges FPSCs come from suboptimal film crystallinity and built‐up stress due to mismatch lattice constant between layers, making whole device prone mechanical vulnerability degradation optoelectronic performance. Among reported solutions for above issues, polymeric are particularly used as additives interfacial FPSCs, which promote crystallization perovskite, defect passivation, self‐healing, hence improving device's PCE long‐term stability. In this review progress polymers gone through, aiming present comprehensive overview how utilize further push envelope efficiency, its underlying mechanisms. Furthermore, study delved into contributions encapsulation large‐area manufacturing processes, critical facilitate lab‐to‐fab process FPSCs. Finally, forward‐looking insights that set requirements future material design selection presented, with hope constructing efficient, stable, environmentally friendly

Language: Английский

Citations

0
Modulating Internal Residual Stress for Efficient and Durable Flexible Perovskite Solar Cells DOI Open Access

Gan Zuo,

Peide Zhu, Jie Zeng

et al.

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

Published: March 18, 2025

Flexible perovskite solar cells (F‐PSCs) are promising due to their low cost and versatility. However, the thermal instability of flexible substrates often results in internal defects residual stress during formation films. To address this issue, cellulose diacetate (CDA), a green eco‐friendly material derived from natural plant fibers, is used. CDA not only enhanced quality films but also reduced generation stress. Furthermore, it effectively passivates that arise annealing process. As result, power conversion efficiency 24.68% on substrate, which one highest values F‐PSCs, achieved. The incorporation lead more uniform distribution bending, significantly improving long‐term environmental stability devices. This sustainable fiber‐based approach provides new direction for advancement cells.

Language: Английский

Citations

0
In‐Situ Polymerization Strategies for Flexible Perovskite Solar Cells: Mechanisms and Prospects DOI
Hao Wang, Xin Li

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

Published: April 2, 2025

Abstract Flexible perovskite solar cells (FPSCs) possess great market competitiveness in the field of portable devices. However, internal defects and tensile stress will inevitably be introduced during preparation operation FPSCs, cracks delamination easily occur practical operations such as bending folding, which is adverse to long‐term stability Polymers, precursor additives containing various functional groups, are widely applied for crystallization regulation flexibility enhancement films. Benefiting from remarkable achievements residual release improvement perovskite, strategies based on in‐situ polymerization reported not only rigid PSCs but also FPSCs. Here, FPSCs systematically summarized. First, factors affecting performance discussed defects, stress, external environment. Then, functions polymers listed, including control, moisture resistance enhancement, film toughening. Next, mechanisms advantages polymerization, by elaborated. Finally, characteristics summarized prospects future development concluded.

Language: Английский

Citations

0
Challenges and perspectives for the perovskite module research DOI

Runda Li,

Libing Yao,

Jingyi Sun

et al.

Chem, Journal Year: 2025, Volume and Issue: unknown, P. 102542 - 102542

Published: April 1, 2025

Language: Английский

Citations

0
Rational Interface Design Toward Mechanically Durable Flexible Perovskite Solar Cells DOI
Tai Li,

Yue Zhu,

Zhe Du

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Abstract Owing to distinctive properties of lightweight, thin, high energy‐to‐mass ratio and bendability, flexible perovskite solar cells (f‐PSCs) are expected extend the application scenarios photovoltaics, while defective fragile interface within devices seriously restricted their mechanical stability practical deployment. Herein, origin flexibility lattice is explored historic progress f‐PSCs briefly summarized. Then, fracture mechanics relevant characterizations introduced. Recent strategies boost durability systematically reviewed from aspect design, including regulation crystallization with optimum crystallinity suppressed strain, construction grain boundary patches eliminate difference between boundaries, facilitating energy dissipation adjacent elastic layers, strengthening interfacial contact improved resistance. In end, perspectives in further development toward efficient mechanically robust provided.

Language: Английский

Citations

0
Adapting Explainable Machine Learning to Study Mechanical Properties of 2D Hybrid Halide Perovskites DOI Creative Commons
Yuxuan Yao, Dan Han, Kieran B. Spooner

et al.

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

Published: Aug. 13, 2024

Abstract 2D hybrid organic and inorganic perovskites (HOIPs) are used as capping layers on top of 3D to enhance their stability while maintaining the desired power conversion efficiency (PCE). Therefore, HOIP needs withstand mechanical stresses deformations, making stiffness an important observable. However, there is no model for unravelling relationship between crystal structures properties. In this work, explainable machine learning (ML) models accelerate in silico prediction properties HOIPs, indicated by out‐of‐plane in‐plane Young's modulus. The ML can distinguish stiff non‐stiff extract dominant physical feature influencing moduli, viz. metal‐halogen‐metal bond angle. Furthermore, steric effect index (STEI) cations found be a rough criterion non‐stiffness. Their optimal ranges extracted from probability analysis. Based strong correlation deformation octahedra modulus, transferability approach single‐layer multi‐layer HOIPs demonstrated. This work represents step toward complex structure using tool.

Language: Английский

Citations

2
Polymers for Perovskite Solar Cells DOI Creative Commons
Shuo Wang,

Xueyuan Gong,

Mingxin Li

et al.

JACS Au, Journal Year: 2024, Volume and Issue: 4(9), P. 3400 - 3412

Published: Aug. 31, 2024

Perovskite solar cells (PSCs) are recognized as one of the most promising next-generation photovoltaics, primarily due to their exceptional power conversion efficiency, ease processing, and cost-effectiveness. Despite these advantages, challenges remain in achieving high-quality films ensuring long-term stability PSCs, which hinder widespread commercialization. Polymers, characterized by multifunctional groups, superior thermal stability, flexible long chains, cross-linking capabilities, offer significant potential enhance performance reliability PSCs. This review comprehensively presents multifaceted roles that polymers play Through carefully controlling interactions between perovskites, crucial aspects such film crystallization kinetics, carrier transport process, ion migration issues, mechanical properties under bending can be effectively regulated maximize device performance. Furthermore, hydrophobic strong chelated networks significantly PSCs various environmental conditions while mitigating lead leakage, thereby addressing concerns durability. Moreover, this Perspective identifies pathways for further advancing polymer-based strategies PSC applications.

Language: Английский

Citations

2
In‐Situ Cross‐Linked Polymers for Enhanced Thermal Cycling Stability in Flexible Perovskite Solar Cells DOI
Zhihao Li, Chunmei Jia,

Hongzhuo Wu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 30, 2024

Abstract Flexible perovskite solar cells (FPSCs) are a promising emerging photovoltaic technology, with certified power conversion efficiencies reaching 24.9 %. However, the frequent occurrence of grain fractures and interface delamination raises concerns about their ability to endure mechanical stresses caused by temperature fluctuations. In this study, we employ an in situ polymerization molecule extended functional end groups preserve integrity during thermal cycling. The AMPS‐DEA chemically anchors boundaries cross‐links neighboring grains, protecting structure from stress accumulation. Additionally, its hydroxyl form bidentate chelation SnO 2 , enhancing interfacial adhesion preventing delamination. More importantly, relaxed residual provided allows layer adapt changes, effectively matching adjacent layers failure. Our findings demonstrate that modification not only boosts PCE 25.78 % rigid PSCs 24.54 flexible but also improves stability, maintaining over 95 efficiency after 10,000 bending cycles 200 cycles.

Language: Английский

Citations

1