Results 71 to 80 of about 15,692 (288)

Coulomb correlation and magnetic ordering in double-layered manganites: LaSr$_2$Mn$_2$O$_7$

, 2001
A detailed study of the electronic structure and magnetic configurations of the 50 % hole-doped double layered manganite LaSr$_2$Mn$_2$O$_7$ is presented.
Andersen, Anisimov, Anisimov, Anisimov, Argyriou, Arthur J. Freeman, Battle, Boer, Chatterji, Dessau, Fang, Gunnarsson, Hayashi, Huang, Julia E. Medvedeva, Kimura, Kimura, Kubota, Kubota, Lichtenstein, Michael A. Korotin, Moritomo, Moritomo, Oleg N. Mryasov, Park, Perring, Pickett, Rosenkranz, Satpathy, Solovyev, Urushibara, Vladimir I. Anisimov, von Barth, Wei, Wollan   +34 more
core   +1 more source

Reversible Photochromism in ⟨110⟩ Oriented Layered Halide Perovskite

ACS Nano, 2022
Extending halide perovskites' optoelectronic properties to stimuli-responsive chromism enables switchable optoelectronics, information display, and smart window applications. Here, we demonstrate a band gap tunability (chromism) via crystal structure transformation from three-dimensional FAPbBr3 to a ⟨110⟩ oriented FAn+2PbnBr3n+2 structure using a mono-
Anil Kanwat, Biplab Ghosh, Si En Ng, Prem J. S. Rana, Yulia Lekina, Thomas J. N. Hooper, Natalia Yantara, Mikhail Kovalev, Bhumika Chaudhary, Priyanka Kajal, Benny Febriansyah, Qi Ying Tan, Maciej Klein, Ze Xiang Shen, Joel W. Ager, Subodh G. Mhaisalkar, Nripan Mathews   +16 more
openaire   +4 more sources

Efficient NiOx Hole Transport Layers Enabled by Multifunctional MXenes for High‐Performance Tin‐Lead Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
An efficient NiOx HTL is successfully prepared by introducing MXene as an additive without further surface modification to fabricate high‐performance FASn0.5Pb0.5I3 perovskite solar cells. The introduction of MXene contributes to improved conductivity of NiOx, better aligned at NiOx/perovskite interfaces, and enhanced quality of perovskite films ...
Lijun Chen, Guanqi Tang, Yanghou Wang, Xiaolong Cao, Junjun Jin, Jie Tang, Liyang Yu, Zheng Zhou, Peng You, Hanlin Hu, Weiqing Yang, Qidong Tai, Feng Yan   +12 more
wiley   +1 more source

Orbital-Energy Splitting in Anion Ordered Ruddlesden-Popper Halide Perovskites for Tunable Optoelectronic Applications

, 2020
The electronic orbital characteristics at the band edges plays an important role in determining the electrical, optical and defect properties of perovskite photovoltaic materials.
Ghosez, Philippe, Hong, Jiawang, Tang, Gang, Wang, Vei, Zhang, Yajun   +4 more
core   +1 more source

Perovskite Thin Films via Atomic Layer Deposition [PDF]

Advanced Materials, 2014
A new method to deposit perovskite thin films that benefit from the thickness control and conformality of atomic layer deposition (ALD) is detailed. A seed layer of ALD PbS is place-exchanged with PbI2 and subsequently CH3 NH3 PbI3 perovskite. These films show promising optical properties, with gain coefficients of 3200 ± 830 cm(-1) .
Sutherland, Brandon R., Hoogland, Sjoerd, Adachi, Michael M., Kanjanaboos, Pongsakorn, Wong, Chris T. O., McDowell, Jeffrey J., Xu, Jixian, Voznyy, Oleksandr, Ning, Zhijun, Houtepen, Arjan J., Sargent, Edward H.   +10 more
openaire   +3 more sources

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source

Polaron Self-localization in White-light Emitting Hybrid Perovskites

, 2016
Two-dimensional (2D) perovskites with general formula $APbX_4$ are attracting increasing interest as solution processable, white-light emissive materials.
Bruno, Annalisa, Brédas, Jean-Luc, Cortecchia, Daniele, Gurzadyan, Gagik G., Lo, Shu-Zee Alencious, Mhaisalkar, Subodh, Soci, Cesare, Yin, Jun   +7 more
core   +1 more source

Photoconductivity‐Driven Quantum Efficiency Gain in Inorganic Ruddlesden‐Popper Layered Cs2PbBr2I2 Perovskite Photodetector for Visible Light Detection

Advanced Functional Materials, EarlyView.
Rational halogen mixing strategy was employed to shift the bandgap of Cs2PbBr2I2 from ultraviolet to visible region, enabling first realization of a visible‐light photodetector with this 2D layered Ruddlesden‐Popper perovskite material. Under illumination, light‐induced internal field forms and drives trap‐mediated persistent photoconductivity ...
Md Fahim Al Fattah, Asif Abdullah Khan, Saikiran Khamgaonkar, Majid Haji Bagheri, Danyah Khan, Md Rasidul Islam, Mahmoud Almadoun, Aixi Pan, Alexander Li, Marwa Abd‐Ellah, Vivek Maheshwari, Dayan Ban   +11 more
wiley   +1 more source

Charge Ordering and Phase Competition in the Layered Perovskite Lasr2mn2o7

, 1999
Charge-lattice fluctuations are observed in the layered perovskite manganite LaSr2Mn2O7 by Raman spectroscopy as high as 340 K and with decreasing temperature they become static and form a charge ordered (CO) phase below TCO=210 K.
A. dos Santos, A. K. Cheetham, B. J. Campbell, D. B. Romero, D. E. Cox, D. E. Cox, D. N. Argyriou, D. N. Argyriou, E. T. Heyen, G. Blumberg, G. F. Strouse, H. A. Mook, H. N. Bordallo, J. B. A. A. Elemans, J. B. Goodenough, J. F. Mitchell, J. K. Furdyna, J. P. Pouget, J. S. Gardner, K. Hanif, L. Vasiliu-Doloc, M. Kubota, M. N. Iliev, M. Takata, P. Calvani, P. D. Battle, P. G. Radaelli, R. J. McQueeney, T. G. Perring, T. Kimura, T. Mizokawa, V. Kiryukhin, Y. Moritomo   +32 more
core   +1 more source

Inorganic and Layered Perovskites for Optoelectronic Devices

Advanced Materials, 2019
AbstractOrganic–inorganic halide perovskites are making breakthroughs in a range of optoelectronic devices. Reports of >23% certified power conversion efficiency in photovoltaic devices, external quantum efficiency >21% in light‐emitting diodes (LEDs), continuous‐wave lasing and ultralow lasing thresholds in optically pumped lasers, and ...
Fakharuddin, Azhar, Shabbir, Umair, Qiu, Weiming, Iqbal, Tahir, Sultan, Muhammad, Heremans, Paul, Schmidt-Mende, Lukas   +6 more
openaire   +4 more sources