Post‐Treating Grain Boundaries and Surface Defects by Long‐Chain Polymer for Highly Efficient and Stable Perovskite Solar Cells DOI Open Access
Yihui Zou, Yi Ding, Haihua Hu

и другие.

Small Methods, Год журнала: 2024, Номер unknown

Опубликована: Окт. 12, 2024

Abstract Grain boundaries (GBs) and surface defects within perovskite films are inherent challenges that affect the photovoltaic performance of solar cells (PSCs. In this work, Nylon 11 (N11) is utilized, a long‐chain polymer, for post‐treating GBs FAPbI 3 films. The multifunctional groups N11 exhibit unique passivation abilities, enabling self‐regulation selective correction reverse‐charged defects. Post‐treating with results in high‐quality characterized by tight low defect density. Despite fabrication under full open‐air conditions, post‐treatment significantly enhances power conversion efficiency (PCE) value PSCs, increasing it from reference 21.89% to 23.54%. Importantly, long alkyl chain present humidity stability PSCs. Unencapsulated PSCs treated maintain 89% their initial PCE after exposure air 30% relative (RH) 1000 h, demonstrating resilience elevated levels. This work highlights substantial improvement achieved through N11.

Язык: Английский

Significance of Formamidinium Incorporation in Perovskite Composition and Its Impact on Solar Cell Efficiency: A Mini‐Review DOI
Karthick Sekar, Ravichandran Manisekaran, Onyekachi Nwakanma

и другие.

Advanced Energy and Sustainability Research, Год журнала: 2024, Номер 5(8)

Опубликована: Апрель 26, 2024

Perovskite solar cells (PSCs) have gained tremendous research interest recently owing to several advantages, including low material cost, facile solution processability, bandgap tunability, and alluring device efficiency. The organic formamidinium (FA) cation‐based perovskites are mainly considered as one of the potential candidates for charge carrier generation due their excellent properties, such thermal stability than traditional perovskites. However, inevitable unfavorable polymorphism (i.e., α δ ) at room temperature still forms basis numerous works allow fabrication a high‐quality absorber enhances PSCs performance. studies resolve contemporary techniques (e.g., passivation strategy) with recent novel methods presented in this review form essence improvements PSCs. morphology also influences charge‐transfer behavior device's lifetime. Therefore, understanding these properties is essential improve quality avoid many defects. This focuses on structure pure mixed FA various halides, cation's role composition. And comprehensive overview double, triple, quadrupole results proper scientific explanations understand physics.

Язык: Английский

Процитировано

15

Room Temperature Crystallized Phase‐Pure α‐FAPbI3 Perovskite with In‐Situ Grain‐Boundary Passivation DOI Creative Commons
Zejiao Shi, Yaxin Wang, Yanyan Wang

и другие.

Advanced Science, Год журнала: 2024, Номер 11(22)

Опубликована: Март 19, 2024

Abstract Energy loss in perovskite grain boundaries (GBs) is a primary limitation toward high‐efficiency solar cells (PSCs). Two critical strategies to address this issue are high‐quality crystallization and passivation of GBs. However, the established methods generally carried out discretely due complicated mechanisms growth defect formation. In study, combined method proposed by introducing 3,4,5‐Trifluoroaniline iodide (TFAI) into precursor. The TFAI triggers union nano‐sized colloids microclusters facilitates complete phase transition α‐FAPbI 3 at room temperature. controlled chemical reactivity strong steric hindrance effect enable fixed location suppress defects This combination well‐crystallized grains effectively passivated GBs leads an improvement open circuit voltage ( V oc ) PSCs from 1.08 1.17 V, which one highest recorded without interface modification. TFAI‐incorporated device achieved champion PCE 24.81%. maintained steady power output near its maximum point, showing almost no decay over 280 h testing pre‐processing.

Язык: Английский

Процитировано

9

Tailoring the permittivity of passivated dyes to achieve stable and efficient perovskite solar cells with modulated defects DOI Creative Commons
Rongxin Wang, Zhichao Lin, Xinhua Ouyang

и другие.

Materials Today Advances, Год журнала: 2024, Номер 22, С. 100501 - 100501

Опубликована: Май 21, 2024

Additive engineering has been demonstrated to effectively mitigate carrier losses associated with high surface defects of perovskite at grain boundaries, bulk, and interfaces. Nevertheless, there are persistent challenges in enhancing the passivation effects interfaces without compromising extraction efficiency. In this work, a feasible strategy incorporating multiple functional groups developed simultaneously passivate boundaries/interfaces, enhance charge transport by tuning permittivity (εr). Two novel D-π-A type molecules, (Z)-3-((4'-(bis(4-methoxyphenyl)amino)-[1,1′-biphenyl]-4-yl)methylene)-5- fluoroindolin-2-one (TBI) (Z)-2-(5-((4'-(bis(4-methoxyphenyl)amino)-[1,1′-biphenyl]-4-yl) methylene)-4-oxo-2-thioxothiazolidin-3-yl)acetic acid (TBR) were synthesized. Due introduction rhodanine acceptor, εr dye molecules is significantly increased (εr TBR 2.5, TBI 1.9), making closer that spiro-OMeTAD 2.9), which helps reduce dielectric mismatch between top HTL. Moreover, strong coordination interactions Pb2+/FA+ SnO2-layer thioxothiazolidin-3-acetic boundaries The PSC fabricated based on shows improved VOC, JSC, FF, resulting peak PCE 23.74 %, along remarkable stability maintaining above 86 % initial performance after 1440 h aging air 60 relative humidity. This work sets stage for further improving solar cells.

Язык: Английский

Процитировано

6

Highly Oriented FAPbI3 via 2D Ruddlesden Popper Perovskite Template Growth DOI
Yaxin Wang, Zejiao Shi, Yanyan Wang

и другие.

Advanced Energy Materials, Год журнала: 2024, Номер 14(31)

Опубликована: Май 21, 2024

Abstract 2D perovskites are demonstrated as the growth template for modulation of phase transition and crystallization formamidinium lead triiodide (FAPbI 3 ). However, it is challenging to obtain highly oriented α‐FAPbI regulate at bottom FAPbI film. Here, a (BA) 2 PbI 4 layer with preferred orientation introduced perform quasi‐epitaxial , which triggers perovskite formation. Owing assembly [PbI 6 ] 4− octahedral on template, (100) from top attained. At optimum concentration, gradually vanish due extrusion BA + cation guarantees charge transport bottom. Consequently, strategy effectively promotes film quality suppresses non‐radiative recombination. The efficiency solar cells (PSCs) promoted 23.06% 24.78%.

Язык: Английский

Процитировано

5

Interface passivation strategies for high-performance perovskite solar cells using two-dimensional perovskites DOI
He Huang, Xiaobo Zhang, Wencai Zhou

и другие.

Materials Chemistry Frontiers, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

A review of recent advancements in interface passivation strategies, with a particular focus on the implementation 2D/3D perovskite across buried interfaces, grain boundaries, and top interfaces.

Язык: Английский

Процитировано

4

Collaborative Fabrication of High-Quality Perovskite Films for Efficient Solar Modules through Solvent Engineering and Vacuum Flash System DOI
Jie Gao, Fei Fei, Yibo Xu

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(29), С. 38017 - 38027

Опубликована: Июль 11, 2024

The vacuum flash solution method has gained widespread recognition in the preparation of perovskite thin films, laying foundation for industrialization solar cells. However, low volatility dimethyl sulfoxide and its weak interaction with formamidine-based perovskites significantly hinder cell modules further improvement photovoltaic performance. In this study, we describe an efficient reproducible preparing large-scale, highly uniform formamidinium lead triiodide (FAPbI3) films. This is achieved by accelerating rate leveraging complex synergism. Specifically, designed a dual pump system to accelerate depressurization compared quality film formed at different rates. Further, overcome limitations posed DMSO, substituted N-methylpyrrolidone as ligand solvent, creating stable intermediate phase. After annealing, it can be transformed into pinhole-free FAPbI3 film. Due superior these large area module power conversion efficiency 22.7% active 21.4 cm2. Additionally, obtained official certified 22.1% aperture 22 cm2, demonstrated long-term stability.

Язык: Английский

Процитировано

3

Why Perovskite Thermal Stress is Unaffected by Thin Contact Layers DOI
Gabriel R. McAndrews, Muneeza Ahmad, Boyu Guo

и другие.

Advanced Energy Materials, Год журнала: 2024, Номер 14(33)

Опубликована: Июнь 5, 2024

Abstract Metal halide perovskite photovoltaics have emerged as a high efficiency, low‐cost alternative that can potentially rival or enhance conventional silicon technology. Despite exceptional initial power conversion efficiencies, achieving compliance with international standards and widespread adoption requires further enhancements to their operational stability. Notably, addressing mechanical strain stress in brittle perovskites has pivotal approach mitigate chemical degradation improve reliability during thermal cycling. In this study, popularized engineering strategy is investigated which coefficient of expansion (CTE) hole transport layer (i.e., PDCBT) cast onto inorganic (CsPbI 2 Br) at 100 °C. Contrary previously published results, the X‐ray diffraction (XRD):Sin ψ substrate curvature measurement techniques show no discernible impact on strain. The accuracy XRD:Sin method for measuring highlighted contrast an analysis based shifts single XRD peaks be influenced by multiple artifacts. findings study are accordance mechanics theory: thin layers unable induce significant changes films force they apply negligible compared applied thick stiff substrate.

Язык: Английский

Процитировано

3

Crystallinity Control and Strain Release in Wide-Bandgap Perovskite Film via Seed-Induced Growth for Efficient Photovoltaics DOI
H. Yang,

Kai Wu,

Haikuo Guo

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(32), С. 42566 - 42576

Опубликована: Авг. 1, 2024

The seed method stands out as a straightforward and efficient approach for fabricating high-performance perovskite solar cells (PSCs). In this study, we propose the utilization of an antisolvent additive to induce crystal seeding, thereby facilitating growth wide-bandgap grains. Specifically, introduce three commonly used antisolvents─ethyl acetate (EA), isopropanol (IPA), chlorobenzene (CB)─directly into precursor solution generate seeds, which serve promote subsequent nucleation. This antisolvent–crystal seeding (ACSM) results in increased grain sizes, reduced film defects, overall improved quality. Consequently, power conversion efficiencies (PCEs) 1.647 eV PSCs with EA, IPA, CB additives are recorded at 19.86%, 20.61%, 20.45%, respectively, surpassing that reference device PCE 18.83%. Furthermore, stability prepared through ACSM is notably enhanced. Notably, optimized IPA retain 75% original after being stored ambient air conditions (25 °C, RH ∼ 15%) 30 days, better than CB-added (64%) EA-added devices (53%), while only 31% initial PCE. Moreover, even continuous thermal annealing 50 °C 200 h, IPA-assisted demonstrate best stability, followed by those exhibiting poorest stability.

Язык: Английский

Процитировано

2

Post‐Treating Grain Boundaries and Surface Defects by Long‐Chain Polymer for Highly Efficient and Stable Perovskite Solar Cells DOI Open Access
Yihui Zou, Yi Ding, Haihua Hu

и другие.

Small Methods, Год журнала: 2024, Номер unknown

Опубликована: Окт. 12, 2024

Abstract Grain boundaries (GBs) and surface defects within perovskite films are inherent challenges that affect the photovoltaic performance of solar cells (PSCs. In this work, Nylon 11 (N11) is utilized, a long‐chain polymer, for post‐treating GBs FAPbI 3 films. The multifunctional groups N11 exhibit unique passivation abilities, enabling self‐regulation selective correction reverse‐charged defects. Post‐treating with results in high‐quality characterized by tight low defect density. Despite fabrication under full open‐air conditions, post‐treatment significantly enhances power conversion efficiency (PCE) value PSCs, increasing it from reference 21.89% to 23.54%. Importantly, long alkyl chain present humidity stability PSCs. Unencapsulated PSCs treated maintain 89% their initial PCE after exposure air 30% relative (RH) 1000 h, demonstrating resilience elevated levels. This work highlights substantial improvement achieved through N11.

Язык: Английский

Процитировано

1