Ultralow Thermal Conductivity of 2D Dion–Jacobson (PDA)(FA)n−1PbnI3n+1 Perovskite Films DOI

Yang Wei,

Xiangyu Chen,

Ming-Qian Yuan

et al.

Optics Letters, Journal Year: 2024, Volume and Issue: 49(18), P. 5316 - 5316

Published: Aug. 26, 2024

Two-dimensional (2D) perovskites exhibit enhanced thermal stability compared to three-dimensional perovskites, especially the emerging 2D Dion–Jacobson (DJ) phase perovskite. However, heat transfer mechanisms in DJ are rarely reported. Herein, we determine conductivities of (PDA)(FA) n − 1 Pb I 3 + films with = 1−6 by time-domain thermoreflectance. The measured results indicate that these extremely low, showing a trend from decline rise increasing values, and reaching lowest when 2. We measure propagation acoustic phonons 1−3 Brillouin scattering find phonon velocity plays key role conductivity, which can be explained mismatch spring constants between inorganic layer organic using bead-spring model. gradually conductivity for larger values is attributed gradual transformation grain orientation horizontal vertical, demonstrated grazing-incidence wide-angle x ray (GIWAXS) results. Our work deepens understanding transport process perovskite provides insights into management solutions their devices.

Language: Английский

Efficiency enhancement to 24.62% in inverted perovskite solar cells through poly (ionic liquid) bulk modification DOI Creative Commons
Xingyuan Chen, Tong Wang, Jiabao Yang

et al.

Energy Materials and Devices, Journal Year: 2024, Volume and Issue: 2(1), P. 9370029 - 9370029

Published: March 1, 2024

Small-molecule ionic liquids (ILs) are frequently employed as efficient bulk phase modifiers for perovskite materials. However, their inherent characteristics, such high volatility and ion migration properties, pose challenges in addressing the stability issues associated with solar cells (PSCs). Here, we design a poly (IL) multiple active sites, named poly[4-styrenesulfonyl(trifluoromethylsulfonyl)imide]pyridine (P[STFSI][PPyri]), an additive of The S=O sulfonyl group chelates uncoordinated Pb2+ forms hydrogen bonds organic cations perovskite, suppressing volatilization cations. N+ pyridine can fix halide ions through electrostatic interaction I−, Br− ions to prevent migration. P[STFSI][PPyri] demonstrates ability to passivate defects suppress non-radiative recombination PSCs. Additionally, it facilitates fixation ions, thereby enhancing both photoelectric performance device. Consequently, introduction dopant devices results champion efficiency 24.62%, demonstrating outstanding long-term operational stability, encapsulated device maintaining 87.6% its initial even after 1500 hours continuous maximum power point tracking. This strategy highlights promising potential effective PSCs, providing combination stability.

Language: Английский

Citations

5
Stability and reliability of perovskite photovoltaics: Are we there yet? DOI Creative Commons
Kenedy Tabah Tanko, Zhen Tian, Sonia R. Raga

et al.

MRS Bulletin, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

The power-conversion efficiency (PCE) of perovskite solar cells (PSCs) has exceeded in 2024 the theoretical single-junction Shockley-Queisser limit 33.7% with perovskite/silicon tandem version. commercialization technology is now a reality PV industry demonstrating its first commercial products. Many companies have shown excellent module reliability most them passing IEC standardization (required for silicon cells). In this article, we want to bring some light on intriguing question regarding stability and PSC technology: Are there yet? Issues are still under strong investigation research topic increased exponentially last 10 years. Since already promised their modules, 80% retention initial PCE after 25 years, following two or three years will be crucial demonstrate these pledges. work, present an outline stable devices reported date discuss important strategies leading highly devices. online version contains supplementary material available at 10.1557/s43577-025-00863-5.

Language: Английский

Citations

0
Light-Induced Phase Mixing as One Origin for the Degradation of Phase-Impure 2D Perovskite Solar Cells DOI
Ying Jiang, Xiaoming Zhao

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Language: Английский

Citations

0
Surface Coordination and Polymerization of Allyl Mercaptan Passivates the Oxidation of Copper DOI Creative Commons
Jiahao Yang,

Xiaomeng She,

Song Zhang

et al.

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

Published: May 2, 2025

Abstract The oxidation of copper significantly restricts its widespread industrial applications. Traditional methods, such as alloying and anti‐corrosion coatings, often compromise copper's electrical thermal conductivity. Molecular passivation technology has emerged a promising solution, enhancing properties without degrading intrinsic physical characteristics. However, the enhancement through molecular is far from satisfactory. Herein, allyl mercaptan employed monomer to investigate performance. It demonstrated that can coordinate polymerize on surfaces under mild conditions, forming polymeric layers. modified foil (Cu‐AM) exhibits corrosion‐inhibiting efficiency 99.65%. Density functional theory (DFT) calculations indicate coordination various crystal planes spontaneous, with dissociation adsorption energy ranking Cu(100) > Cu(110) Cu(111). Anti‐corrosion experiments single‐crystal foils further corroborate these findings, showing Cu(100)‐AM achieves highest 99.91%.

Language: Английский

Citations

0
Surface Passivation to Improve the Performance of Perovskite Solar Cells DOI Creative Commons

H. J. Lee,

Dawen Li

Energies, Journal Year: 2024, Volume and Issue: 17(21), P. 5282 - 5282

Published: Oct. 24, 2024

Perovskite solar cells (PSCs) suffer from a quick efficiency drop after fabrication, partly due to surface defects, and can be further enhanced with the passivation of defects. Herein, is reviewed as method improve both stability PSCs, an emphasis on chemical mechanism passivation. Various molecules are utilized passivants, such halides, Lewis acids bases, amines (some result in low-dimensional perovskite), polymers. Multifunctional promising group they capable passivating multiple defects various functional groups. This review categorizes these addition considering potential limitations each type passivant. Additionally, passivants for Sn-based PSCs discussed since this has poor photovoltaic performance compared their lead-based counterpart severe Lastly, future perspectives usage addressed provide direction upcoming research practical applications.

Language: Английский

Citations

3
Programmable bionanocomposite coated fertilizers for prolonged controlled release of nitrogen DOI
Jiaxuan Liu, Yue Yuan, Ji Gao

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154907 - 154907

Published: Aug. 16, 2024

Language: Английский

Citations

1
Perovskite solar cells: What do you mean when you say “stable” DOI Creative Commons
Mónica Lira‐Cantú, Kenedy Tabah Tanko

APL Energy, Journal Year: 2024, Volume and Issue: 2(3)

Published: Sept. 1, 2024

Language: Английский

Citations

1
Ultralow Thermal Conductivity of 2D Dion–Jacobson (PDA)(FA)n−1PbnI3n+1 Perovskite Films DOI

Yang Wei,

Xiangyu Chen,

Ming-Qian Yuan

et al.

Optics Letters, Journal Year: 2024, Volume and Issue: 49(18), P. 5316 - 5316

Published: Aug. 26, 2024

Two-dimensional (2D) perovskites exhibit enhanced thermal stability compared to three-dimensional perovskites, especially the emerging 2D Dion–Jacobson (DJ) phase perovskite. However, heat transfer mechanisms in DJ are rarely reported. Herein, we determine conductivities of (PDA)(FA) n − 1 Pb I 3 + films with = 1−6 by time-domain thermoreflectance. The measured results indicate that these extremely low, showing a trend from decline rise increasing values, and reaching lowest when 2. We measure propagation acoustic phonons 1−3 Brillouin scattering find phonon velocity plays key role conductivity, which can be explained mismatch spring constants between inorganic layer organic using bead-spring model. gradually conductivity for larger values is attributed gradual transformation grain orientation horizontal vertical, demonstrated grazing-incidence wide-angle x ray (GIWAXS) results. Our work deepens understanding transport process perovskite provides insights into management solutions their devices.

Language: Английский

Citations

0