Results 61 to 70 of about 19,509 (295)

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

Factors influencing halide vacancy transport in perovskite solar cells

Discover Materials, 2022
Ion migration in inorganic and hybrid organic-inorganic metal halide perovskites causes unusual phenomena in photovoltaic devices, such as current-voltage hysteresis and photoinduced phase transformations.
Young Won Woo, Young-Kwang Jung, Gee Yeong Kim, Sunghyun Kim, Aron Walsh   +4 more
doaj   +1 more source

Advances in Theoretical Calculation of Halide Perovskites for Photocatalysis

Frontiers in Nanotechnology, 2021
Photocatalysis, which includes water splitting for hydrogen fuel generation, degradation of organic pollutants, and CO2 reduction using renewable solar energy, is one of the most promising solutions for environmental protection and energy conversion ...
Xiaolin Liu, Jichao Fan, Changzhu Huang
doaj   +1 more source

Rationally Designed Bilayer Passivation Strategy for High‐Performance Vacuum‐Processed Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
A bilayer “Anchor‐and‐Seal” passivation strategy using EDAI2 and 4MeO‐PEAI effectively mitigates surface defects in vacuum‐processed perovskite films through synergistic hydrogen bonding and Lewis base coordination. This approach optimizes interfacial energy alignment and suppresses non‐radiative recombination, enabling vacuum‐deposited p‐i‐n ...
Mohammadhossein Kohan, Sang‐Heon Lee, Jaswinder Singh, Sung‐Nam Kwon, Seok‐In Na   +4 more
wiley   +1 more source

Polarons in Metal Halide Perovskites

, 2019
The peculiar optoelectronic properties of metal-halide perovskites, partly underlying their success in solar cells and light emitting devices, are likely related to the complex interplay of electronic and structural features mediated by formation of ...
Daniele Meggiolaro, Filippo De Angelis, Edoardo Mosconi, Arup Mahata, Francesco Ambrosio   +4 more
core   +2 more sources

Halide Diffusion in Mixed-Halide Perovskites and Heterojunctions

Chemistry of Materials
Migration of halide defects guides ion transport in metal halide perovskites and controls the kinetics of halide mixing and phase separation. We study the diffusion of halide vacancies and interstitials in \ce{CsPb(I_{x}Br_{1-x})_{3}} and \ce{CsPbI_{3}}/\ce{CsPbBr_{3}} heterojunctions by molecular dynamics simulations using neural network potentials ...
Viren Tyagi, Mike Pols, Geert Brocks, Shuxia Tao   +3 more
openaire   +2 more sources

Self‐Adaptive Anhydrous Passivation Mitigates Open‐Circuit Voltage Loss in Pb‐Sn Mixed Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
In this report, a self‐adaptive anhydrous passivation strategy is introduced by incorporating trimellitic anhydride (TMAH) into the perovskite precursor. In situ hydrolysis of TMAH yields trimellitic acid (TMA); ‐C═O/‐COO− groups of TMAH/TMA form a chelate with undercoordinated Pb2+/Sn2+, regulate nucleation, promote (100) orientation, passivate ...
Md. Ataur Rahman, Md. Abdul Karim, Md. Emrul Kayesh, Siliang Cao, Shamim Ahmmed, Kiyoto Matsuishi, Ashraful Islam   +6 more
wiley   +1 more source

Designed Lewis Acid–Base Passivation for High Performance Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
ABSTRACT Silicon's high cost and long energy payback time remain major barriers to the global expansion of solar power. In contrast, metal–halide perovskites offer abundant, solution‐processable absorbers, and have achieved efficiencies of 25%–30%, positioning them as strong competitors to silicon.
Afna Manaf, Hiba Shahulhameed, Bhabani Sankar Swain, Shengzhong (Frank) Liu, Adel Najar   +4 more
wiley   +1 more source

Manipulation of parity and polarization through structural distortion in light-emitting halide double perovskites

Communications Materials, 2021
Halide perovskites recently attracted wide attention for light emitting applications. Here, octahedral distortion in halide double perovskites Cs2AgMCl6, induced by the mixture of trivalent M-cations Bi3+, In3+, and Sb3+, gives rise to enhanced white ...
Tamilselvan Appadurai, Ravi Kashikar, Poonam Sikarwar, Sudhadevi Antharjanam, Birabar Ranjit Kumar Nanda, Aravind Kumar Chandiran   +5 more
doaj   +1 more source

The scale effects of organometal halide perovskites [PDF]

, 2023
Organometal halide perovskites have achieved great success in solution-processed photovoltaics. The explorations quickly expanded into other optoelectronic applications, including light-emitting diodes, lasers, and photodetectors. An in-depth analysis of
Liu, Zhe, Zhenze Zhao, Zhao, Zhenze, Zhe Liu, Yibo Zhang, Tang, Aiwei, Aiwei Tang, Zhang, Yibo   +7 more
core   +1 more source