In Situ Probing the Crystallization Kinetics in Gas‐Quenching‐Assisted Coating of Perovskite Films DOI Creative Commons
Shudi Qiu,

Martin Majewski,

Lirong Dong

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(10)

Published: Jan. 7, 2024

Abstract The pursuit of commercializing perovskite photovoltaics is driving the development various scalable crystallization techniques. Among them, gas quenching a promising approach for high‐throughput deposition films. However, films prepared by gas‐quenching assisted blade coating are susceptible to formation pinholes and frequently show inferior crystallinity if interplay between film coating, drying, kinetics not fully optimized. That arguably requires thorough understanding how single processing steps influence printed Here, in situ optical spectroscopies integrated into doctor‐blading setup that allows real‐time monitor during process. It found essential role treatment achieving smooth compact controlling nucleation rate. Moreover, with assistance phase‐field simulations, excessive methylammonium iodide revealed increase grain size accelerating crystal growth These results tailored control rate critical optimal quality, leading solar cells champion power conversion efficiency 19.50% mini modules 15.28% achieved.

Language: Английский

Stabilization of photoactive phases for perovskite photovoltaics DOI
Xueping Liu, Deying Luo, Zheng‐Hong Lu

et al.

Nature Reviews Chemistry, Journal Year: 2023, Volume and Issue: 7(7), P. 462 - 479

Published: April 26, 2023

Language: Английский

Citations

124
Fluorine‐Containing Passivation Layer via Surface Chelation for Inorganic Perovskite Solar Cells DOI
Hao Zhang, Wanchun Xiang,

Xuejiao Zuo

et al.

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 62(6)

Published: Dec. 8, 2022

Minimizing surface defect is vital to further improve power conversion efficiency (PCE) and stability of inorganic perovskite solar cells (PSCs). Herein, we designed a passivator trifluoroacetamidine (TFA) suppress CsPbI3-x Brx film defects. The amidine group TFA can strongly chelate onto the iodide vacancy, strengthened by additional hydrogen bonds. Moreover, three fluorine atoms allow strong intermolecular connection via bonds, thus constructing robust shield against moisture. TFA-treated PSCs exhibit remarkably suppressed recombination, yielding record PCEs 21.35 % 17.21 for 0.09 cm2 1.0 device areas, both which are highest all-inorganic so far. also achieves PCE 39.78 under indoor illumination, photovoltaic devices. Furthermore, greatly improves ambient preserving 93 initial after 960 h.

Language: Английский

Citations

113
Ethanol-based green-solution processing of α-formamidinium lead triiodide perovskite layers DOI

Hyun-Sung Yun,

Hyoung Woo Kwon, Min Jae Paik

et al.

Nature Energy, Journal Year: 2022, Volume and Issue: 7(9), P. 828 - 834

Published: Aug. 18, 2022

Language: Английский

Citations

102
Recent progress in perovskite solar cells: from device to commercialization DOI
Xinhui Luo, Xuesong Lin, Feng Gao

et al.

Science China Chemistry, Journal Year: 2022, Volume and Issue: 65(12), P. 2369 - 2416

Published: Nov. 3, 2022

Language: Английский

Citations

101
Solvent Gaming Chemistry to Control the Quality of Halide Perovskite Thin Films for Photovoltaics DOI Creative Commons
Xiaofeng Huang,

Guocheng Deng,

Shaoqi Zhan

et al.

ACS Central Science, Journal Year: 2022, Volume and Issue: 8(7), P. 1008 - 1016

Published: July 19, 2022

Research on solvent chemistry, particularly for halide perovskite intermediates, has been advancing the development of solar cells (PSCs) toward commercial applications. A predictive understanding effects formation is thus essential. This work systematically discloses relationship among basicity solvents, solvent-contained intermediate structures, and intermediate-to-perovskite α-FAPbI3 evolutions. Depending their basicity, solvents exhibit own favorite bonding selection with FA+ or Pb2+ cations by forming either hydrogen bonds coordination bonds, resulting in two different kinds structures. While both intermediates can be evolved into below δ-to-α thermodynamic temperature, hydrogen-bond-favorable kind could form defect-less via sidestepping break strong bonds. The disclosed gaming mechanism guides fabricating high-quality films high-performance PSCs modules.

Language: Английский

Citations

76
Self‐Driven Prenucleation‐Induced Perovskite Crystallization Enables Efficient Perovskite Solar Cells DOI
Yao Wang,

Lingcong Li,

Zhujie Wu

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(22)

Published: March 31, 2023

Abstract Perovskite film with high crystal quality is fundamental to achieving high‐performance solar cells. A fast nucleation process crucial improving the crystallization quality. Here, we propose a self‐driven prenucleation strategy achieve nucleation. This realized through rational solvent design. The key characteristics of different solvents are systematically evaluated. Among them, formamide, ultra‐high dielectric constant, low Gutman donor number, and boiling point, selected as co‐solvent. These unique render formamide double‐face that good for formamidinium iodide (FAI) CsI while poor PbI 2 . As result, induces ‐DMSO seeding crystals accelerates nucleation, crystalline perovskite film. efficiency hole transport layer‐free carbon‐based cells boosted beyond 19 % first time.

Language: Английский

Citations

65
Intermediate Phase Engineering with 2,2‐Azodi(2‐Methylbutyronitrile) for Efficient and Stable Perovskite Solar Cells DOI

Yansong Ge,

Haibing Wang, Cheng Wang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(23)

Published: March 24, 2023

Sequential deposition has been widely employed to modulate the crystallization of perovskite solar cells because it can avoid formation nucleation centers and even initial in precursor solution. However, challenges remain overcoming incomplete random transformation PbI2 films with organic ammonium salts. Herein, a unique intermediate phase engineering strategy developed by simultaneously introducing 2,2-azodi(2-methylbutyronitrile) (AMBN) both salt solutions regulate crystallization. AMBN not only coordinates form favorably mesoporous film due coordination between Pb2+ cyano group (C≡N), but also suppresses vigorous activity FA+ ions interacting FAI, leading full preferred orientation. Therefore, perovskites favorable facet orientations are obtained, defects largely suppressed owing passivation uncoordinated . As result, champion power conversion efficiency over 25% stabilized 24.8% is achieved. Moreover, device exhibits an improved operational stability, retaining 96% under 1000 h continuous white-light illumination intensity 100 mW cm-2 at ≈55 °C N2 atmosphere.

Language: Английский

Citations

59
A crystal capping layer for formation of black-phase FAPbI 3 perovskite in humid air DOI
Yu Zou, Wenjin Yu, Haoqing Guo

et al.

Science, Journal Year: 2024, Volume and Issue: 385(6705), P. 161 - 167

Published: July 11, 2024

Black-phase formamidinium lead iodide (α-FAPbI 3 ) perovskites are the desired phase for photovoltaic applications, but water can trigger formation of photoinactive impurity phases such as δ-FAPbI . We show that classic solvent system perovskite fabrication exacerbates this reproducibility challenge. The conventional coordinative dimethyl sulfoxide (DMSO) promoted under high relative humidity (RH) conditions because its hygroscopic nature. introduced chlorine-containing organic molecules to form a capping layer blocked moisture penetration while preserving DMSO-based complexes regulate crystal growth. report power conversion efficiencies >24.5% solar cells fabricated across an RH range 20 60%, and 23.4% at 80% RH. unencapsulated device retained 96% initial performance in air (with 40 60% RH) after 500-hour maximum point operation.

Language: Английский

Citations

56
Major strategies for improving the performance of perovskite solar cells DOI Creative Commons
Lixiu Zhang, Hang Li, Kai Zhang

et al.

iEnergy, Journal Year: 2023, Volume and Issue: 2(3), P. 172 - 199

Published: Sept. 1, 2023

Metal halide perovskite solar cell (PSC) has successfully distinguished itself in optoelectronic field by virtue of the sharp rise power conversion efficiency over past decade. The remarkable breakthrough at such a fast speed can be mainly attributed to comprehensive study on film deposition techniques, especially effective management surface and interfacial defects recent works. Herein, we summarized current trends performance enhancement for PSCs, with focus generally applicable strategies high-performance works, involving methods, compositional engineering, additive crystallization manipulation, charge transport material selection, passivation, optical coupling effect constructing tandem cells. Promising directions perspectives are also provided.

Language: Английский

Citations

48
Dynamic Reversible Oxidation‐Reduction of Iodide Ions for Operationally Stable Perovskite Solar Cells under ISOS‐L‐3 Protocol DOI

Xiaoyi Lü,

Kexuan Sun,

Yaohua Wang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)

Published: April 5, 2024

Despite rapid advancements in the photovoltaic efficiencies of perovskite solar cells (PSCs), their operational stability remains a significant challenge for commercialization. This instability mainly arises from light-induced halide ion migration and subsequent oxidation into iodine (I

Language: Английский

Citations

29