Achieving High Operating‐Temperature Self‐powered X‐Ray Detection in Multilayered Hybrid Perovskites through Arylamine Intercalation DOI
Junlin Li, Tingting Zhu, Ye Huang

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: June 5, 2024

Abstract Polar metal halide hybrid perovskites (PHPs) that exhibit outstanding bulk photovoltaic effect (BPVE), excellent semiconductor features, and strong radiation absorption ability, have shown prominent advantages in highly sensitive direct X‐ray detection. However, it is still a challenge to explore PHPs with high BPVE temperature ranges, answering the demand of developing thermally stable passive Herein, by intercalating arylamine into lead tribromide inducing order‐disorder phase transition, 2D multilayered (BZA) 2 (MA)Pb Br 7 ( BZPB , BZA = benzylamine, MA methylamine) synthesized. crystallizes polar space group Aea at low‐temperature demonstrates significant open‐circuit 0.3 V deriving from under irradiation. Meanwhile, coefficient carrier transport capability bilayered framework associated give detection abilities. At 0 bias, impressive sensitivity 98 µC Gy −1 cm −2 . Importantly, introduction rigid ring increases energy barrier transition thus dramatically enhances operating up 409 K without performance degradation. This work strongly reveals great potential rational design for applications.

Language: Английский

Crystallization Kinetics of Hybrid Perovskite Solar Cells DOI
Zhiwei Wu,

Shuyang Sang,

Junjian Zheng

et al.

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

Published: Jan. 17, 2024

Abstract Metal halide perovskites (MHPs) are considered ideal photovoltaic materials due to their variable crystal material composition and excellent photoelectric properties. However, this variability in leads complex crystallization processes the manufacturing of perovskite (MHP) thin films, resulting reduced crystallinity subsequent performance loss final device. Thus, understanding controlling dynamics essential for improving stability PSCs (Perovskite Solar Cells). To investigate impact characteristics on properties MHP films identify corresponding modulation strategies, we primarily discuss relevant aspects kinetics, systematically summarize theoretical methods, outline techniques crystallization, including solution engineering, additive component which helps highlight prospects current challenges kinetics

Language: Английский

Citations

31
Metal-Halide Perovskite Submicrometer-Thick Films for Ultra-Stable Self-Powered Direct X-Ray Detectors DOI Creative Commons
M. Girolami, Fabio Matteocci, Sara Pettinato

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: April 26, 2024

Metal-halide perovskites are revolutionizing the world of X-ray detectors, due to development sensitive, fast, and cost-effective devices. Self-powered operation, ensuring portability low power consumption, has also been recently demonstrated in both bulk materials thin films. However, signal stability repeatability under continuous exposure only tested up a few hours, often reporting degradation detection performance. Here it is shown that self-powered direct fabricated starting from FAPbBr

Language: Английский

Citations

27
Surface Reconstruction for Efficient NiOx‐Based Inverted Perovskite Solar Cells DOI
Nan Yan, Yang Cao,

Zhiwen Jin

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(31)

Published: May 3, 2024

Functional agents are verified to efficiently enhance device performance of perovskite solar cells (PSCs) through surface engineering. However, the influence intrinsic characteristics molecules on final is overlooked. Here, a reconstruction strategy developed efficiency inverted PSCs by mitigating adverse effects lead chelation (LC) molecules. Bathocuproine (BCP) chosen as representative LC for its easy accessibility and outstanding optoelectronic properties. During this strategy, BCP first dissolved in solvents then captured specially undercoordinated Pb

Language: Английский

Citations

21
The marriage of perovskite nanocrystals with lanthanide‐doped upconversion nanoparticles for advanced optoelectronic applications DOI Creative Commons
Wen Zhang, Wei Zheng, Ping Huang

et al.

Aggregate, Journal Year: 2024, Volume and Issue: 5(5)

Published: April 12, 2024

Abstract The exceptional optoelectronic properties of lead halide perovskite nanocrystals (PeNCs) in the ultraviolet and visible spectral regions have positioned them as a promising class semiconductor materials for diverse photovoltaic applications. However, their limited response to near‐infrared (NIR) light due intrinsic bandgap (>1.5 eV) has hindered applications many advanced technologies. To circumvent this limitation, it is fundamental significance integrate PeNCs with lanthanide‐doped upconversion nanoparticles (UCNPs) that are capable efficiently converting low‐energy NIR photons into high‐energy photons. By leveraging energy transfer from UCNPs PeNCs, synergistic combination can not only expand responsivity range but also introduce novel emission profiles luminescence multi‐dimensional tunability (e.g., wavelength, lifetime, polarization) under low‐to‐medium power irradiation, which breaks through inherent restrictions individual thereby opens up new opportunities device engineering. In review, we focus on latest advancements development PeNCs‐UCNPs nanocomposites, an emphasis controlled synthesis optical design such full‐spectrum solar cells, photodetectors, multilevel anticounterfeiting. Some future efforts prospects toward active research field envisioned.

Language: Английский

Citations

15
Amino Acid Double-Passivation-Enhanced Quantum Dot Coupling for High-Efficiency FAPbI3 Perovskite Quantum Dot Solar Cells DOI
Meidan Que, Hao Yuan,

Qizhao Wu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(5), P. 6189 - 6197

Published: Jan. 24, 2024

Formamidinium lead triiodide (FAPbI3) perovskite quantum dot has outstanding durability, reasonable carrier lifetime, and long diffusion length for a new generation of highly efficient solar cells. However, ligand engineering is dilemma because the ionized dynamic characteristics dots. To circumvent this issue, herein, we employed mild solution-phase ligand-exchange approach through adding short-chain amino acids that contain carboxyl groups to modify dots passivate their surface defects during purification process. As result, photoelectric conversion efficiency FAPbI3 cells (PQDSCs) increased from 11.23 12.97% with an open-circuit voltage 1.09 V, short-circuit current density 16.37 mA cm–2, filling factor 72.13%. Furthermore, stability device modified by retains over 80% initial upon being exposed 20–30% relative humidity 240 h aging treatment. This work may offer innovative concept treatment improve photovoltaic performance PQDSCs toward large-scale manufacture.

Language: Английский

Citations

11
Single‐Source Evaporated High‐Quality Single‐Phase Cs3Cu2I5 Scintillator Films for High Performance X‐Ray Imaging DOI
Guoqiang Peng,

Fu Qiu,

Zhenhua Li

et al.

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

Published: March 29, 2024

Abstract Vacuum‐evaporated metal halides (MHs) scintillator thick films have received much attention in the X‐ray imaging field due to their excellent light yield and uniform large‐area preparation. However, inevitable heteromorphic homologs MHs (e.g., Copper‐based (Cu‐MHs): CsCu 2 X 3 ∖Cs Cu 5 ) change of film structural backbone will result spectral hybridization (phase purity), eventually detaches (lattice mismatches). Herein, a single‐source vacuum evaporation method prepare (≈10 µm) Cu‐MHs (as an example) scintillators is realized: 1) Presynthesis pure phase materials by solution with protective agent ensure purity without precise control component ratios process; 2) One‐shot formation avoids stress accumulation utilize longitudinal growth characteristics crystalline obtain crystal orientations better optical outputs. Finally, obtained comparable partially single‐crystal (53 983 photons MeV −1 resolution (14.1 lp mm partial template method. The detection system based on prepared exhibits good response speed linearity different radiation intensities exposure times. further drive application believed.

Language: Английский

Citations

9
Organic Spacers Modulated Low Dose X‐Ray Detection in Hybrid Halide 2D Perovskites: Unveiling Exciton Dynamics DOI Open Access
Shivani Choudhary, Joydip Ghosh,

Shantanu C. Pathak

et al.

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

Published: Jan. 16, 2025

In this study, we investigate how modulating organic spacers in perovskites influences their X-ray detection performance and reveal the mechanism of low-dose with high sensitivity using femtosecond-transient absorption spectroscopy (fs-TAS). Particularly, employ N,N,N',N'-tetramethyl-1,4-phenylenediammonium (TMPDA) N,N-dimethylphenylene-p-diammonium (DPDA) as to synthesize 2D perovskite single crystals (SCs). We find that DPDA-based SCs exhibit reduced interplanar spacing between inorganic layers, leading increased lattice packing. Density functional theory (DFT) results indicate effective mass lower distortion (DPDA)PbBr4 suppressing formation self-trapped exciton (STEs) electron-phonon coupling enhancing carrier delocalization these SCs. Further, measurements demonstrates higher than (TMPDA)PbBr4, attributed its enhanced delocalization, mobility-lifetime product. The limit (LoD) for is determined be 13 nGy/s, significantly both commercial detectors state-of-the-art perovskite-based detectors. Furthermore, fs-TAS study reveals prolonged hot STE cooling decay lifetimes, which directly correlate sensitivity. This highlights impact on performance, providing a framework designing ultra-low LoD essential health security applications.

Language: Английский

Citations

1
Light Management in 2D Perovskite Toward High-Performance Optoelectronic Applications DOI Creative Commons

Kailian Dong,

Tao Jiang, Guoyi Chen

et al.

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: Feb. 6, 2025

Abstract Two-dimensional Dion-Jacobson (DJ) perovskite has garnered significant attention due to its superior responsivity and operation stability. However, efforts are predominantly focused on discovering new organic spacer synthesize novel perovskites, while material-form-associated light management, which is crucial for enhancing the photodetector’s efficiency, largely overlooked. Herein, we introduced surface management strategy into DJ-type system by synthesizing surface-patterned BDAPbBr 4 (BPB, BDA = NH 3 (CH 2 ) microplates (MPs) using template-assisted space-confined method, was further elucidated theoretical optical simulation. By leveraging MPs enhance absorption, BPB-based photodetectors (PDs) achieved remarkable photoresponse in ultraviolet region, marked a high on/off ratio (~ 5000), (2.24 A W −1 ), along with large detectivity 10 13 Jones) low detection limit (68.7 nW cm −2 ). Additionally, PDs showcased communication imaging capabilities even under weak-light illumination. Notably, anisotropic nature of conferred excellent polarization sensitivity PD. These results represented first demonstration BPB imaging, as well polarized detection. Our findings offer valuable insights photodetector performance optoelectronic applications through strategies.

Language: Английский

Citations

1
Impact of symmetry and chain length on the excitonic, electronic, and optical characteristics of Dion-Jacobson phase perovskites DOI
Zhonghai Lin,

Ruiyang Zeng,

Pingjian Wang

et al.

Chemical Physics Letters, Journal Year: 2025, Volume and Issue: unknown, P. 142032 - 142032

Published: March 1, 2025

Language: Английский

Citations

1
Strategies for improving the stability of perovskite for photocatalysis: A review of recent progress DOI
Hanxi Li, Cui Lai, Zhen Wei

et al.

Chemosphere, Journal Year: 2023, Volume and Issue: 344, P. 140395 - 140395

Published: Oct. 9, 2023

Language: Английский

Citations

19