Results 81 to 90 of about 39,642 (326)

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

Decoupling Size and Electronic Effects in Doped SrTiO3 Photocatalysts Through Surface Area–Normalized CO2 Hydrogenation Rates

Advanced Functional Materials, EarlyView.
Exploring the photocatalytic reverse water–gas shift (RWGS) reaction on doped SrTiO3 nanoparticle films, reveals that normalizing catalytic rates by the catalyst's specific surface area (SSA) disentangled surface area effects from the catalyst's intrinsic material properties.
Dikshita Bhattacharyya, Baliana Shani, Isaac Holmes‐Gentle, Gerardo T Martinez, Martyn McLachlan, Nicola Seriani, Ludmilla Steier   +6 more
wiley   +1 more source

Rare case of magnetic Ag$^{3+}$ ion: double perovskite Cs$_{2}$KAgF$_{6}$

, 2014
Normally $4d$ or $5d$ transition metals are in a low-spin state. Here using first-principles calculations, we report on a rare case of a high-spin $S$=1 magnetic state for the Ag$^{3+}$ ion in the double perovskite Cs$_{2}$KAgF$_{6}$.
Fan, Fengren, Jia, Ting, Khomskii, D. I., Li, X. G., Liu, Ting, Wu, Hua, Zeng, Zhi, Zhang, Xiaoli   +7 more
core   +1 more source

Full Bulk Spin Polarization and Intrinsic Tunnel Barriers at the Surface of Layered Manganites [PDF]

, 2005
Transmission of information using the spin of the electron as well as its charge requires a high degree of spin polarization at surfaces. At surfaces however this degree of polarization can be quenched by competing interactions.
Badica, Elvira, Berghuis, P., Freeland, J. W., Gray, K. E., Kavich, J., Mitchell, J. F., Ozyuzer, L., Zheng, H.   +7 more
core   +2 more sources

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Enhanced Stability of MAPbI3 Perovskite Films with Zirconium Phosphate‐Phosphonomethylglycine Nanosheets as Additive

Advanced Materials Interfaces, 2021
Methylammonium lead iodide perovskite (MAPbI3) is today considered the most promising component for highly efficient third generation solar cells. However, the lifetime of the solar devices is strongly affected by the stability of the MAPbI3 films toward
Nadir Vanni, Diletta Morelli Venturi, Eros Radicchi, Giulia Quaglia, Elena Cambiotti, Loredana Latterini, Filippo De Angelis, Ferdinando Costantino   +7 more
doaj   +1 more source

Multiferroic BiFeO3-BiMnO3 Nanocheckerboard From First Principles

, 2010
We present a first principles study of an unusual heterostructure, an atomic-scale checkerboard of BiFeO3-BiMnO3, and compare its properties to the two bulk constituent materials, BiFeO3 and BiMnO3.
K. M. Rabe, L. Pálová, P. Chandra, R. Resta, S. V. Kiselev   +4 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

Defect‐Mediated Scintillation in Fully Inorganic Perovskites via Water‐Induced 0D/3D Phase Modulation

Advanced Functional Materials, EarlyView.
A reproducible synthesis to control 3D/0D phase ratios via water‐tuned solvent–antisolvent methods is presented. Enhanced scintillation yield and ultrafast decay are achieved. Defect‐driven emission mechanisms are revealed through cathodoluminescence and radioluminescence, shedding light on the underexplored role of the 0D Cs4PbBr6 and mixed 0D/3D ...
Mario Calora, Francesco Carulli, Nadir Vanni, Antonella Giuri, Elena Ferrari, Matteo Masino, Laura Lazzarini, Francesca Rossi, Gianluca Accorsi, Anna Moliterni, Davide Altamura, Cinzia Giannini, Luca Cappelletti, Gianluca Quarta, Alberto Quaranta, Rosanna Mastria, Anna Paola Caricato, Sergio Brovelli, Aurora Rizzo   +18 more
wiley   +1 more source

Illuminating the Devolution of Perovskite Passivation Layers

Small Structures
Surface treatment of perovskite materials with their layered counterparts has become an ubiquitous strategy for maximizing device performance. While layered materials confer great benefits to the longevity and long‐term efficiency of the resulting device
Marcin Giza, Aleksey Kozikov, Paula L. Lalaguna, Jake D. Hutchinson, Vaibhav Verma, Benjamin Vella, Rahul Kumar, Nathan Hill, Dumitru Sirbu, Elisabetta Arca, Noel Healy, Rebecca L. Milot, Malcolm Kadodwala, Pablo Docampo   +13 more
doaj   +1 more source