Article
Nanoscience & Nanotechnology
Valentin Ion, Valentin Teodorescu, Ruxandra Birjega, Maria Dinescu, Christoph Mitterbauer, Ioannis Alexandrou, Ioan Ghitiu, Floriana Craciun, Nicu D. Scarisoreanu
Summary: In this study, composition-modulated strong electro-optical response was demonstrated in (Ba,Ca)(Ti,Zr)O-3 perovskite titanate epitaxial films, which can be used in applications such as quantum computing. It was found that the films exhibited high Pockels or Kerr optical nonlinearities depending on the ratios of Ca/Ba and Ti/Zr, which were related to the presence of nanopolar domains with different symmetries. These findings provide a new avenue for the implementation of nonlinear optical elements in integrated photonic circuits.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Mythili Surendran, Huandong Chen, Boyang Zhao, Arashdeep S. Thind, Shantanu Singh, Thomas Orvis, Huan Zhao, Jae-Kyung Han, Han Htoon, Megumi Kawasaki, Rohan Mishra, Jayakanth Ravichandran
Summary: This study reports the direct epitaxial thin film growth of chalcogenide perovskite BaZrS3 by pulsed laser deposition, showing smooth film surfaces and strong potential for photovoltaic applications. The films exhibit clear epitaxial relationship with the substrate, and photodetector devices demonstrate fast and efficient photo response, making BaZrS3 a promising candidate for ultrathin front absorbers in tandem solar cells.
CHEMISTRY OF MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Yunlong Sun, Jack Yang, Sean Li, Danyang Wang
Summary: Perovskite oxide thin films exhibit intriguing electrical, magnetic, and photovoltaic properties, which can be combinatorially harnessed in future microelectronic devices. Defect engineering plays a crucial role in understanding and manipulating the physical properties of materials. Different types of defects, such as point defects, dopants, domains, and domain walls, impact the functional properties of perovskite thin films by affecting the oxidation states of relevant ions and inducing anomalous behaviors.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Jian Song, Mingyu Gong, Meng-fu Tsai, Youcao Ma, Houyu Ma, Yue Liu, Ying-hao Chu, Rong Huang, Jun Ouyang, Jian Wang, Tongxiang Fan
Summary: By using atomistic simulation and microscopy characterization, a pseudo-ferroelectric domain with similar morphology to a ferroelectric domain but with the same defect character as a ferroelastic domain-wall, i.e., a semi-coherent (100)(matrix)||(100)(domain) interface, is identified. Pseudo-ferroelectric domain walls play a critical role in the migration kinetics of ferroelastic domains and the piezoelectric responses of ferroelectric thin films during cyclic mechanical/electrical loading.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Nanoscience & Nanotechnology
Hao Gu, Junmin Xia, Chao Liang, Yonghua Chen, Wei Huang, Guichuan Xing
Summary: This Perspective article investigates the advances in achieving phase-pure perovskite by manipulating precursor interactions and preparation methods, and discusses their prominent optoelectronic properties and applications. Compared to two-dimensional metal-halide perovskites with multiple quantum wells, the ones with phase-pure quantum wells have a flattened energy landscape, resulting in reduced energy or charge-transfer losses and increased stability.
NATURE REVIEWS MATERIALS
(2023)
Review
Nanoscience & Nanotechnology
Mingyue Tian, Lan Xu, Ya Yang
Summary: Perovskite oxide thin film materials are widely used in various fields of human life due to their excellent physical properties, providing more convenience. The performance of thin films is influenced by multiple factors, and the application area of thin films is determined by the preparation, structure, and performance of the material.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Energy & Fuels
Yinghui Wu, Hongwei Zhu, Dong Wang, Seckin Akin, Felix T. Eickemeyer, Dan Ren, Houzhi Cai, Long-Biao Huang
Summary: The use of carboxylated sensitizers like KTN can effectively passivate the defects on the surface of perovskite films, reducing nonradiative recombination and prolonging carrier lifetime, resulting in improved performance and stability of perovskite solar cells.
Article
Multidisciplinary Sciences
Changshun Chen, Jianxin Chen, Huchen Han, Lingfeng Chao, Jianfei Hu, Tingting Niu, He Dong, Songwang Yang, Yingdong Xia, Yonghua Chen, Wei Huang
Summary: Researchers have developed a new screen-printing method for fabricating perovskite solar cells, achieving high energy conversion efficiencies. This method is not affected by humidity, and the fabrication process is simple and suitable for large-scale production.
Article
Engineering, Electrical & Electronic
Shyam Sharma, Zachary Ward, Kevin Bhimani, Kang Li, Aniruddha Lakhnot, Rishabh Jain, Su-Fei Shi, Humberto Terrones, Nikhil Koratkar
Summary: In this study, the bandgap of BaZrS3 thin films was successfully reduced from 1.75 to 1.4 eV through in situ alloying of titanium during chemical vapor deposition growth. Theoretical study and experimental observations showed good agreement, demonstrating the feasibility of bandgap tuning for BaZrS3 films.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Multidisciplinary Sciences
Fan Yang, Jun Li, Yin Long, Ziyi Zhang, Linfeng Wang, Jiajie Sui, Yutao Dong, Yizhan Wang, Rachel Taylor, Dalong Ni, Weibo Cai, Ping Wang, Timothy Hacker, Xudong Wang
Summary: The research introduces a novel approach for the large-scale fabrication of piezoelectric biomaterial thin films with excellent piezoelectric properties and mechanical flexibility. The glycine-PVA films, with their natural compatibility and degradability in physiological environments, have the potential to advance the development of transient implantable electromechanical devices.
Article
Chemistry, Physical
Shijing Sun, Ming Liu, Janak Thapa, Noor Titan Putri Hartono, Yicheng Zhao, Donglin He, Sarah Wieghold, Matthew Chua, Yue Wu, Vladimir Bulovic, Sanliang Ling, Christoph J. Brabec, Andrew I. Cooper, Tonio Buonassisi
Summary: The addition of porous organic cages (POCs) as functional additives can enhance the stability and performance of perovskite thin films, delaying their degradation under heat and humidity stresses.
CHEMISTRY OF MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Jie Chen, Yang Zhou, Yongping Fu, Jun Pan, Omar F. Mohammed, Osman M. Bakr
Summary: Oriented semiconductor nanostructures and thin films offer numerous advantages in optoelectronics, with directional exciton transport, efficient charge transfer and separation, and optical anisotropy being key properties. Halide perovskites have emerged as promising and cost-effective semiconductor materials for high-power conversion efficiency photovoltaics and high-performance optoelectronics. The controlled growth of these structures is crucial for improved optoelectronic performance and in-depth studies of the materials' physical properties.
Article
Chemistry, Physical
Laura M. Jacoby, Matthew J. Crane, Daniel R. Gamelin
Summary: This research discovers the potential application of vapor-deposited CsPbBr3 thin films in optoelectronic and spin-based devices. Both photogenerated holes and electrons show coherent spin precession, but the spin dephasing time of photogenerated electrons is shorter.
CHEMISTRY OF MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Kuan Liu, Patrick W. K. Fong, Qiong Liang, Gang Li
Summary: This review summarizes the recent progress in upscaling of organic-inorganic halide perovskites processed in an ambient environment. It discusses the challenges and limitations involved, as well as provides a brief overview of robust strategies for the fabrication of efficient perovskite solar cells using printing-friendly techniques under ambient conditions, which are crucial for future deployment of this technology.
TRENDS IN CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Zhonghai Yu, Haolei Hui, Damien West, Han Zhang, Yiyang Sun, Sen Kong, Yin Zhang, Chenhua Deng, Sen Yang, Shengbai Zhang, Hao Zeng
Summary: This study reports the realization of four different types of chalcogenide perovskite thin films with controlled phases through CS2 annealing. These films exhibit bandgaps and photoluminescence (PL) in the visible range. The variation in PL width across different compounds is attributed to the difference in kinetic barriers between local structural motifs. The findings highlight the potential of chalcogenide perovskite thin films for optoelectronic applications, while emphasizing the challenges in synthesis and performance optimization.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Elena Cannuccia, Vinh Ta Phuoc, Benjamin Briere, Laurent Cario, Etienne Janod, Benoit Corraze, Marie Bernadette Lepetit
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Physical
Marie-Bernadette Lepetit, Alain Gelle
COMPUTATIONAL AND THEORETICAL CHEMISTRY
(2017)
Article
Physics, Condensed Matter
R. M. Galera, C. Opagiste, M. Amara, J-C Toussaint, M-B Lepetit, S. Rols
JOURNAL OF PHYSICS-CONDENSED MATTER
(2018)
Article
Chemistry, Multidisciplinary
Wei Peng, Victor Baledent, Marie-Bernadette Lepetit, Antoine Vaunat, Elisa Rebolini, Martha Greenblatt, Pascale Foury-Leylekian
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS
(2019)
Article
Chemistry, Physical
Elisa Rebolini, Marie-Bernadette Lepetit
Summary: In this paper, a novel and efficient parallel implementation, RelaxSE, is presented for calculating the low-lying excited states and energies of strongly correlated systems. This method, based on the Selected Active Space + Single excitations, is designed to tackle systems with numerous open shells per atom. Evaluation on a test set shows linear scaling with respect to the number of determinants and a small overhead due to parallelization.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Infectious Diseases
Laure Kamus, Benedicte Roquebert, Jerome Allyn, Nicolas Allou, Dorothee Valance, Charles Simon, Marie-Christine Jaffar-Bandjee, Ghislaine Descours, Sophie Jarraud, Guillaume Miltgen
Summary: Legionella sainthelensi is a rare non-pneumophila Legionella species that can cause severe pneumonia. This case report describes the first documented case of severe bilateral pleuropneumonia caused by L. sainthelensi, which improved with macrolide treatment. Non-pneumophila Legionella infections may be underdiagnosed, emphasizing the importance of considering alternative Legionella species in patients with compatible clinical presentations.
BMC INFECTIOUS DISEASES
(2021)
Article
Physics, Condensed Matter
M. J. Weseloh, V Baledent, W. Zheng, M. Verseils, P. Roy, J. B. Brubach, D. Colson, A. Forget, P. Foury-Leylekian, M-B Lepetit
Summary: This paper presents a study on the lattice dynamics in BaFe2Se3 and confirms that the space group of BaFe2Se3 is Pm rather than the previously believed Pnma. The study reveals a strong coupling between spin order and lattice degrees of freedom, resulting in a change in the bond-length pattern and the observed magnetic structure. Furthermore, a complete symmetry analysis of the BaFe2Se3 phase diagram is proposed.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
Julien Leveque, Elisa Rebolini, Marie-Bernadette Lepetit, Andres Saul
Summary: In this paper, we theoretically study the magnetic properties of the CoCu2O3 compound. The magnetic effective exchange interactions and zeroth-field splitting were computed using ab initio methods, and the magnetic order and transition temperature were determined using classical Monte Carlo simulations. We find that CoCu2O3 exhibits a unique magnetic pattern based on coupled three-leg ladders, which is different from the two-leg structural ladders observed in other members of the ACu(2)O(3) family. The presence of an additional magnetic atom and the large Co2+-ion anisotropy are shown to be crucial for the high transition temperature observed in this compound.
Article
Materials Science, Multidisciplinary
A. Vaunat, V Baledent, S. Petit, P. Roy, J. B. Brubach, G. Giri, E. Rebolini, P. Steffens, S. Raymond, Q. Berrod, M. B. Lepetit, P. Foury-Leylekian
Summary: In this paper, the dynamical properties of GdMn2O5 were studied using inelastic neutron scattering and infrared spectroscopy assisted by ab initio calculations. The research sheds light on the presence of electromagnon, a magnetic mode that can be excited by an electric field. By combining various methods, including spin-wave measurements, simulations, and ab initio calculations, the magnetic contribution to this mode was described in detail, with an exhaustive study of its electroactivity completing the comprehensive investigation of the complex GdMn2O5 system.
Article
Materials Science, Multidisciplinary
W. Zheng, V. Baledent, M. B. Lepetit, P. Retailleau, E. V. Elslande, C. R. Pasquier, P. Auban-Senzier, A. Forget, D. Colson, P. Foury-Leylekian
Article
Materials Science, Multidisciplinary
G. Yahia, F. Damay, S. Chattopadhyay, V. Baledent, W. Peng, S. W. Kim, M. Greenblatt, M. -B. Lepetit, P. Foury-Leylekian
Article
Materials Science, Multidisciplinary
Aysegul Begum Kocak, Julien Varignon, Sebastien Lemal, Philippe Ghosez, Marie-Bernadette Lepetit
Article
Materials Science, Multidisciplinary
G. Yahia, F. Damay, S. Chattopadhyay, V. Baledent, W. Peng, E. Elkaim, M. Whitaker, M. Greenblatt, M. -B. Lepetit, P. Foury-Leylekian
Article
Materials Science, Multidisciplinary
W. Peng, V. Baledent, S. Chattopadhyay, M. -B. Lepetit, G. Yahia, C. V. Colin, M. J. Gooch, C. R. Pasquier, P. Auban-Senzier, M. Greenblatt, P. Foury-Leylekian
Article
Materials Science, Multidisciplinary
Matthieu Saubanere, Marie Bernadette Lepetit, G. M. Pastor
