Temperature and Pressure Effects on Phase Transitions and Structural Stability in CsPb2Br5 and CsPb2Br4I Perovskite-Derived Halides DOI

Yousra Chakroun,

W. Chérif,

Francielen San Martins Rodrigues

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(46), P. 22258 - 22272

Published: Nov. 5, 2024

All-inorganic perovskites exhibit outstanding light absorption properties in the visible range suitable for solar energy applications. We focus on synthesis of CsPb2(Br,I)5 using mechanochemical procedures. Synchrotron X-ray diffraction (SXRD) data are essential determining crystallographic evolution 295–753 K temperature range. From room to 573 K, crystal structure is refined a two-dimensional (2D) tetragonal framework (space group: I4/mcm) consisting layers face sharing [Pb(Br,I)8] polyhedra. Above transition Tt = 630 and 621 identified from differential scanning calorimetry (DSC) curves CsPb2Br5 CsPb2Br4I, respectively, cubic three-dimensional (3D) corner-sharing perovskite identified, showing substantial Cs (Br,I) deficiency. A more ionic character Cs-halide versus Pb-halide derived anisotropic atomic displacements. An ultralow thermal conductivity 0.35–0.18 W m–1 K–1 related low Debye temperatures. high-pressure SXRD studies, change B0 can be attributed basic expansion unit-cell volume caused by chemical pressure iodine within framework. UV–vis–NIR spectroscopy revealed optical gaps approximately 2.93 2.50 eV, which agrees with ab initio calculations.

Language: Английский

Powering the Future: Opportunities and Obstacles in Lead‐Halide Inorganic Perovskite Solar Cells DOI Creative Commons
Narendra Pai, Dechan Angmo

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Abstract Efficiency, stability, and cost are crucial considerations in the development of photovoltaic technology for commercialization. Perovskite solar cells (PSCs) a promising third‐generation due to their high efficiency low‐cost potential. However, stability organohalide perovskites remains significant challenge. Inorganic perovskites, based on CsPbX ₃ (X = Br − /I ), have garnered attention excellent thermal optoelectronic properties comparable those perovskites. Nevertheless, inorganic faces several hurdles, including need high‐temperature annealing achieve photoactive α‐phase susceptibility transitioning into nonphotoactive δ‐phase under environmental stressors, particularly moisture. These challenges impede creation high‐efficiency, high‐stability devices using low‐cost, scalable manufacturing processes. This review provides comprehensive background fundamental structural, physical, lead‐halide It discusses latest advancements fabricating PSCs at lower temperatures ambient conditions. Furthermore, it highlights progress state‐of‐the‐art devices, manufactured environments reduced temperatures, alongside simultaneous upscaling PSCs.

Language: Английский

Citations

3
Toward durable all-inorganic perovskite solar cells: from lead-based to lead-free DOI

Hongzhe Xu,

Zhaochen Guo,

Peng Chen

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(85), P. 12287 - 12301

Published: Jan. 1, 2024

This highlight article summarizes the empirical advances in stabilizing metastable phases of CsPbI 3 , aiming to provide useful guidelines accelerate development phase-stable CsSnI for durable lead-free PV applications.

Language: Английский

Citations

5
Recent Developments and Future Challenges for Perovskite Solar Cells: Physical Insights to Improve PCE DOI
Muhammad Ramzan Saeed Ashraf Janjua, Zunaira Shafiq,

Sehar Shahzadi

et al.

Brazilian Journal of Physics, Journal Year: 2024, Volume and Issue: 54(4)

Published: June 18, 2024

Language: Английский

Citations

4
Nonlinear optical properties of CsPbI3: synthesis, characterization, and application in passively Q-switched lasers DOI
Muhammad Sohail, Zulfiqar Ali, Muhammad Sohail

et al.

Journal of Materials Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Halide perovskites, especially CsPbI 3 , have gained for their strong absorbance across the visible to near-infrared spectrum and a unique electronic structure, enhancing nonlinear optical optoelectronic applications.

Language: Английский

Citations

0
2-Aminoethanethiol Hydroiodate Additives Induced Phase Stability Improvement of CsPbI3 Films for Use in Inorganic Perovskite Solar Cells DOI
Xihong Ding,

Demeng Qian,

Hui Wang

et al.

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

Published: March 4, 2025

This study investigates the role of 2-aminoethanethiol hydroiodate (2-AET·HI) additives in enhancing phase stability and photovoltaic performance CsPbI3 films for inorganic perovskite solar cells. The incorporation 2-AET·HI into precursor solution results a more uniform compact film morphology. X-ray diffraction (XRD) analysis reveals that 2-AET·HI-treated retain their black α-phase, even after 300 h at 25% RH ∼25 °C, whereas control samples show rapid transition to nonphotoactive δ-phase. improvement is reflected enhanced performance, with 2-AET·HI-modified devices exhibiting power conversion efficiency (PCE) 16.7%, compared 15.4% devices. Furthermore, display superior long-term stability, retaining 83% initial PCE 192 ambient conditions, stark contrast unmodified devices, which degrade rapidly.

Language: Английский

Citations

0
Mini-Review on Detailed Synthetic Methods of Lead Halide Perovskite Powders, Single Crystals, and Thin Films DOI
Nam‐Gyu Park, Subodh G. Mhaisalkar

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Language: Английский

Citations

0
Polytype selection in the antisolvent-free crystallization of formamidinium lead iodide using alkylammonium chlorides DOI
Paulo E. Marchezi, Jack R. Palmer, Maimur Hossain

et al.

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This work presents a systematic study of how the size C 0 –C 4 alkylammonium chloride additive directs crystallization pathway in antisolvent-free FAPbI 3 films. We find that larger cations promote intermediate formation hexagonal polytypes, correlating with enhanced film crystallinity.

Language: Английский

Citations

0
Oxygen-Mediated (0D) Cs4PbX6 Formation during Open-Air Thermal Processing Improves Inorganic Perovskite Solar Cell Performance DOI
Rafikul Ali Saha, Wei‐Hsun Chiu, Giedrius Degutis

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(26), P. 16994 - 17006

Published: June 20, 2024

The desire to commercialize perovskite solar cells continues mount, motivating the development of scalable production. Evaluations impact open-air processing have revealed a variety physical changes in fabricated devices─with few having capacity be functionalized. Here, we highlight beneficial role ambient oxygen during thermal metastable γ-CsPbI3-based thin films and devices. Physiochemical-sensitive probes elucidate intercalation formation Pb-O bonds CsPbI3 crystal, entering via iodine vacancies at surface, creating superoxide (O2-) through electron transfer reactions with molecular oxygen, which drives zero-dimensional Cs4PbI6 capping layer annealing (>330 °C). chemical conversion permanently alters film structure, helping shield subsurface from moisture introduces lattice anchoring sites, stabilizing otherwise unstable γ-CsPbI3 films. This functional modification is demonstrated γ-CsPbI2Br cells, boosting operational stability photoconversion efficiency champion devices 12.7 15.4% when annealed dry air. Such findings prompt reconsideration glovebox-based cell research establish scenario where device fabrication can fact greatly benefit oxygen.

Language: Английский

Citations

2
Optical and Structural Properties of Er3+-doped CsPbI3 Nanocrystals Embedded in Borosilicate Glass DOI
R.S. Silva, Nilmar S. Camilo, Éder V. Guimarães

et al.

Physica B Condensed Matter, Journal Year: 2024, Volume and Issue: unknown, P. 416646 - 416646

Published: Oct. 1, 2024

Language: Английский

Citations

0
Machine Learning Approaches in Advancing Perovskite Solar Cells Research DOI

Subham Subba,

Pratika Rai,

Suman Chatterjee

et al.

Advanced Theory and Simulations, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 2, 2024

Abstract The integration of machine learning (ML) with perovskite solar cells (PSCs) signifies a groundbreaking era in photovoltaic (PV) technology. traditional iterative approaches PSC research are often time‐consuming and resource‐intensive. In contrast, ML leverages available data sophisticated algorithms to quickly identify properties optimize parameters for novel materials devices. This review explores how ML‐driven improving various facets PSCs research, including the rapid screening compositions, enhancing stability, refining device architectures, deepening understanding underlying physics. paper is structured gradually familiarize readers essential terminologies concepts, ensuring solid foundation before delving into more intricate topics. A concise workflow introductory toolkits also briefly discussed. Through detailed analysis compelling case studies, basic framework within ML‐PSC‐integrated provided. comprehensive can serve as valuable reference researchers aiming understand leverage advancing path efficient sustainable PV technologies.

Language: Английский

Citations

0