Efficient and Stable 3D/2D Perovskite Solar Cells through Vertical Heterostructures with (BA)4AgBiBr8 Nanosheets DOI
Dan Zhao, Danpeng Gao, Xin Wu

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(39)

Published: Aug. 12, 2022

Perovskite solar cells (PVSCs) have drawn great attention due to their high processability and superior photovoltaic properties. However, further development is often hindered by severe nonradiative recombination at interfaces that decreases power conversion efficiency (PCE). To this end, a facile strategy construct 3D/2D vertical heterostructure reduce the energy loss in PVSCs developed. The contrived through van der Waals integration of 2D perovskite ((BA)4 AgBiBr8 ) nanosheets onto surface 3D-FAPbI3 -based perovskites. large bandgap (BA)4 enables formation type-I heterojunction with perovskites, which serves as barrier suppress trap-assisted interface. As result, satisfying PCE 24.48% achieved an improved open-circuit voltage (VOC from 1.13 1.17 V. Moreover, can effectively mitigate iodide ion diffusion metal electrode, hence enhancing device stability. architectured devices retain ≈90% initial under continuous illumination or heating after 1000 h, are 3D-based devices. This work provides effective controllable simultaneously boost stability PVSCs.

Language: Английский

Tailoring passivators for highly efficient and stable perovskite solar cells DOI
Hong Zhang, Lukas Pfeifer, Shaik M. Zakeeruddin

et al.

Nature Reviews Chemistry, Journal Year: 2023, Volume and Issue: 7(9), P. 632 - 652

Published: July 18, 2023

Language: Английский

Citations

206
Target Therapy for Buried Interface Enables Stable Perovskite Solar Cells with 25.05% Efficiency DOI
Xiaofei Ji, Le‐Yu Bi, Qiang Fu

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(39)

Published: July 17, 2023

The buried interface in perovskite solar cells (PSCs) is pivotal for achieving high efficiency and stability. However, it challenging to study optimize the due its non-exposed feature. Here, a facile effective strategy developed modify SnO2 /perovskite by passivating defects modulating carrier dynamics via incorporating formamidine oxalate (FOA) nanoparticles. Both formamidinium ions show longitudinal gradient distribution layer, mainly accumulating at interface, which enables high-quality upper films, minimized defects, superior contacts, matched energy levels between . Significantly, FOA can simultaneously reduce oxygen vacancies tin interstitial on surface FA+ /Pb2+ associated interface. Consequently, treatment significantly improves of PSCs from 22.40% 25.05% their storage- photo-stability. This method provides an target therapy achieve very

Language: Английский

Citations

129
Recent defect passivation drifts and role of additive engineering in perovskite photovoltaics DOI
Ali Hassan, Zhijie Wang, Y. H. Ahn

et al.

Nano Energy, Journal Year: 2022, Volume and Issue: 101, P. 107579 - 107579

Published: July 9, 2022

Language: Английский

Citations

90
Synergistic Modification of 2D Perovskite with Alternating Cations in the Interlayer Space and Multisite Ligand toward High‐Performance Inverted Solar Cells DOI
Qixin Zhuang, Jing Li, Cong Zhang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(33)

Published: May 11, 2023

The preparation of high-quality perovskite films is key to realize efficient and stable inverted solar cells. trap-assisted nonradiative recombination at grain boundary (GB) surface poses a serious challenge for fabricating films. Here, synergistic modulation strategy two-dimensional (2D) with alternating cations in the interlayer space (ACI) multisite ligand 2-mercapto-1,3,4-thiadiazole (MTD) methylammonium-free reported. formation ACI 2D promotes nucleation three-dimensional (3D) perovskites, suppresses generation yellow phase, black leading increased size crystallinity. Due effect MTD, defects GBs are healed simultaneously. significantly inhibited enables realization high-efficiency devices fascinating power conversion efficiency (PCE) 24.58%, which one highest PCEs reported devices. synergistically modified unsealed device demonstrates an excellent long-term ambient stability, retaining 90.5% its initial PCE after 3000 h under relative humidity 30-40%. This work provides deep insights into minimizing losses through rational engineering GB toward

Language: Английский

Citations

68
Orientation Engineering via 2D Seeding for Stable 24.83% Efficiency Perovskite Solar Cells DOI
Wenjing Zhao,

Meizi Wu,

Zhike Liu

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(14)

Published: Feb. 17, 2023

Abstract Organic‐inorganic hybrid perovskite solar cells (PSCs) have been extensively researched as a promising photovoltaic technology, wherein the orientation of film plays crucial role in power conversion efficiency (PCE) and stability. Here, seed‐mediated method is developed to situ grow layer 2D seed for epitaxial growth 3D atop it construct high‐quality 2D/3D heterojunction. It found that exhibits preferred [112] direction, which different from traditional perovskites with [001] orientation. The oriented consists large‐sized grains low defect density, long charge‐carrier lifetime, good stability, resulting efficient PSCs champion 24.83%. In addition, devices exhibit high stability under ambient, thermal, continuous light‐soaking conditions. This work provides an effective strategy achieving films tunable simultaneously boost PSCs.

Language: Английский

Citations

64
Dopant‐Free Two‐Dimensional Hole Transport Small Molecules Enable Efficient Perovskite Solar Cells DOI
Xiaofei Ji, Tong Zhou, Qiang Fu

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(11)

Published: Jan. 26, 2023

Abstract Developing dopant‐free hole transport materials (HTMs) to replace Spiro‐OMeTAD is a challenging but urgent issue for commercialization of state‐of‐the‐art n‐i‐p structured perovskite solar cells (PSCs). Here, this work proposes an effective two‐dimensional conjugate engineering strategy tune molecular stacking orientation and improve the mobility small molecule HTMs. For first time, triphenylamine (TPA) groups are incorporated as side chains benzo [1,2‐b:4,5‐b′]dithiophene (BDT) unit extend longitudinal conjugate, achieving two donor‐acceptor‐acceptor type 2D molecules, namely XF2 XF3, which show dominant face‐on better than linear XF1. The incorporation alkoxy Lewis base makes XF3 more defect passivator surfaces. As result, PSCs using pristine HTM dramatically improved efficiency 20.59% along with long‐term stability compared that XF1 (power conversion (PCE) = 18.84%). A champion 21.44% achieved through device XF3‐based PSCs. results building block extension in molecules plays essential role morphology elucidates key design rule HTMs high‐performance

Language: Английский

Citations

51
Methods for Passivating Defects of Perovskite for Inverted Perovskite Solar Cells and Modules DOI Creative Commons
Jiarong Wang, Le‐Yu Bi, Qiang Fu

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(35)

Published: June 27, 2024

Abstract Inverted perovskite solar cells (PSCs) have attracted considerable attention due to their distinct advantages, including minimal hysteresis, cost‐effectiveness, and suitability for tandem applications. Nevertheless, the solution processing low formation energy of perovskites inevitably lead numerous defects formed at both bulk interfaces layer. These can act as non‐radiative recombination centers, significantly impeding carrier transport posing a substantial obstacle stability further enhancing power conversion efficiency (PCE). This review delves into detailed discussion nature origin characterization techniques employed defect identification. Furthermore, it systematically summarizes methods detection approaches passivating interface within film in inverted PSCs. Finally, this offers perspective on employing upscaling passivation engineering modules. It is hoped provides insights PSCs

Language: Английский

Citations

48
Bidirectional Targeted Therapy Enables Efficient, Stable, and Eco‐Friendly Perovskite Solar Cells DOI

Xingnan Qi,

Chongping Song, Weihai Zhang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(19)

Published: Feb. 17, 2023

Abstract Perovskite solar cells (PSCs) have witnessed rapid development toward commercialization based on their superior efficiency except for some remained misgivings about poor stability primarily originating from interfacial problems. Robust back interface neutralization of crystal defects, depression dopant lithium ions (Li + ) diffusion, and even inhibition toxic lead (Pb) leakage is highly desirable; however, it remains a great challenge. Herein, cost‐effective therapy approach developed to simultaneously alleviate the obstacles aforementioned. A small molecule, 1,4‐dithiane with unique chair structure, adapted interact under‐coordinated Pb 2+ perovskite surface Li hole transport layer, neutralizing defects suppressing diffusion. Besides, presence can efficiently modulate energetics, enhance hydrophobicity PSCs, anchor atoms via SPb bond. Consequently, target devices perform better than control when exposed light‐soaking, moisture, thermal stress owing synergistic suppression trap‐state density, migration, moisture permeation. The optimized device delivers champion 23.27% mitigated leakage. This study demonstrates promising functionalized modification strategy constructing efficient, stable, eco‐friendly PSCs.

Language: Английский

Citations

47
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

46
Selenophene-Based 2D Ruddlesden-Popper Perovskite Solar Cells with an Efficiency Exceeding 19% DOI
Qiang Fu, Mingqian Chen,

Qiaohui Li

et al.

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(39), P. 21687 - 21695

Published: Sept. 26, 2023

Two-dimensional (2D) Ruddlesden-Popper (RP) perovskites have emerged as attractive candidates for high-performance perovskite solar cells (PSCs) thanks to their superior environmental and structural stability. However, 2D RP PSCs exhibit larger exciton binding energy due the dielectric mismatch between organic inorganic layers, resulting in poorer photovoltaic performance compared 3D analogs. Here, we developed a selenophene-based spacer, namely, 2-selenophenemethylammonium (SeMA), stable efficient PSCs. The film using methylammonium (MA) A-site cation (nominal n = 5) shows excellent quality with large grain size preferred vertical orientation relative substrate. Furthermore, successfully demonstrated effectiveness of predeposition transport layer (PDTL) consisting [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) passivating surface defects inducing densification upper PCBM electron layer. This promotes extraction electrons. optimized based on MA achieved power conversion efficiency (PCE) 17.25%, which was further boosted 19.03% when formamidinium (FA) cation. represents record PCE by spacer. Moreover, these significantly improve thermal, moisture, light Our results provide significant implications synergistic strategy developing spacers device engineering methods achieving highly cells.

Language: Английский

Citations

44