Results 81 to 90 of about 2,536,814 (333)

Electronic structure of ordered double perovskite Ba2CoWO6 [PDF]

AIP Conference Proceedings, 2014
Ba2CoWO6 (BCoW) has been synthesized in polycrystalline form by solid state reaction at 1200C. Structural characterization of the compound was done through X-ray diffraction (XRD) followed by Rietveld analysis of the XRD pattern. The crystal structure is cubic, space group Fm-3m (No 225) with the lattice parameter, a=8.210A.
Ray, Rajyavardhan, Himanshu, A K, Brajesh, Kumar, Choudhary, B K, Bandyopadhyay, S K, Sen, Pintu, Kumar, Uday, Sinha, T P   +7 more
openaire   +2 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

Comparing the performances of Cs2TiBr6, Cs2AgBiBr6, and Cs2PtI6 halide compositions in double perovskite photovoltaic devices

Materials for Renewable and Sustainable Energy
For commercial purposes in the solar cell field which toxicity and stability of lead-based perovskite solar cells (PSC) are important challenges, the presence of lead-free alternatives like Cs2TiBr6, Cs2AgBiBr6 and Cs2PtI6 double perovskites seems ...
Masood Mehrabian, Maryam Taleb-Abbasi, Omid Akhavan   +2 more
doaj   +1 more source

Electronic structures of lead-free Sn- or Ge-hybrid perovskite halides studied by first-principles calculation

Hybrid Advances
Although CH3NH3PbI3-based perovskite compounds have excellent photovoltaic properties, the lead (Pb) is harmful to the environment, and Pb-free perovskite compounds are needed for next generation solar cells.
Yu-Chen Kuo, Takeo Oku, Atsushi Suzuki, Iori Ono, Riku Okumura   +4 more
doaj   +1 more source

Cation order control of correlations in double perovskite Sr_{2}VNbO_{6}

Physical Review Research, 2020
Double perovskites extend the design space for new materials and they often host phenomena that do not exist in their parent perovskite compounds. Here we present a detailed first-principles study of the correlated double perovskite Sr_{2}VNbO_{6}, where
Arpita Paul, Turan Birol
doaj   +1 more source

Structural and doping effects in the half-metallic double perovskite $A_2$CrWO$_6$

, 2003
he structural, transport, magnetic and optical properties of the double perovskite $A_2$CrWO$_6$ with $A=\text{Sr, Ba, Ca}$ have been studied. By varying the alkaline earth ion on the $A$ site, the influence of steric effects on the Curie temperature ...
A. Arulraj, A. Erb, A. Ogale, A.K. Azad, A.K. Azad, A.K. Azad, A.K. Azad, A.W. Sleight, Bog-Gi Kim, C. Ritter, D. D. Sarma, D. Serrate, D. Topwal, D.D. Sarma, D.D. Sarma, D.D. Sarma, F. Galasso, F.K. Patterson, F.K. Patterson, G. Popov, H. Kato, H. Kato, H.Y. Hwang, Horng-Tay Jeng, J. B. Philipp, J. Gopalakrishnan, J. Kanamori, J. Longo, J. Navarro, J. Simon, J.B. Philipp, J.B. Philipp, J.M. Dai, J.P. Zhou, J.S. Park, K. Phillips, K.-I. Kobayashi, K.-I. Kobayashi, K.-I. Kobayashi, L. Alff, Ll. Balcells, M. García-Hernández, M. Imada, M. Itoh, M. S. Brandt, M. Shikano, M. Tovar, M.T. Anderson, M.W. Lufaso, O.K. Andersen, P. Majewski, R. Gross, R. Gross, R.D. Shannon, R.P. Borges, S.A. Wolf, T. Graf, T. Saha-Dasgupta, T. Walther, W. Mader, W. Prellier, W. Westerburg, W.H. Song, Y. Moritomo, Y. Moritomo, Y. Moritomo, Y. Moritomo, Y. Tokura, Y. Tomioka, Z. Fang   +69 more
core   +1 more source

Ultrafast Excited-State Localization in Cs2AgBiBr6 Double Perovskite

Journal of Physical Chemistry Letters, 2021
Cs2AgBiBr6 is a promising metal halide double perovskite offering the possibility of efficient photovoltaic devices based on lead-free materials. Here, we report on the evolution of photoexcited charge carriers in Cs2AgBiBr6 using a combination of ...
Adam D. Wright, Leonardo Rocco Vittorio Buizza, Kimberley J Savill, Giulia Longo, H. Snaith, M. Johnston, L. Herz   +6 more
semanticscholar   +1 more source

Mathematical modeling of the perovskite and double perovskite crystal structures

Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering, 2022
The paper considers the problem of modeling materials with the crystal structure of perovskite and double perovskite. Due to the high complexity of obtaining micro- and nanoscale objects, data on the structure and properties of such materials are especially important.
openaire   +1 more source

Zwitterionic Self‐Assembled Monolayer for Simultaneous Noise Suppression and Hole Extraction in High‐Performance Near‐Infrared Organic Photodetectors

Advanced Functional Materials, EarlyView.
This study presents a new hole transporting material (HTM) mechanism for self‐assembled monolayers in near‐infrared organic photodetectors. The formation of zwitterions induces a strong electric field that significantly increases the work function of HTM‐coated indium tin oxide substrates. The devices exhibit low dark current and noise, along with high
Jiyoung Shin, Gyeong Min Lee, Juyeon Shin, Jaewoong Kim, Tae Hyuk Kim, Do Yeon Kim, Myeong In Kim, Kyeounghak Kim, Jae Won Shim, In Hwan Jung   +9 more
wiley   +1 more source

Half-metallic antiferromagnets in double perovskites: LaAVRuO$_6$ (A=Ca, Sr, and Ba)

, 2001
Based on the theoretical exploration of electronic structures, we propose that the ordered double perovskites LaAVRuO$_6$ and LaVO$_3$/ARuO$_3$ (001) superlattice (A = Ca, Sr and Ba) are strong candidates for half-metallic (HM) antiferromagnets (AFMs ...
A. Callaghan, A. Gulino, A. W. Sleight, B. I. Min, C. Zener, G. Cao, G. Khaliullin, G. L. Catchen, G. Pari, H. Sawada, H. van Leuken, J. H. Park, J. M. Longo, J. T. Rijssenbeek, J.-S. Kang, K. Maiti, K. Ueda, K.-I. Kobayashi, K.-I. Kobayashi, K.-P. Hong, M. Imada, P. Lu, S. J. Youn, S. K. Kwon, S. K. Kwon, S. K. Kwon, S. Miyasaka, T. C. Gibb, T. H. Kim, T. Saha-Dasgupta, W. Choi, W. E. Pickett, W. E. Pickett, Y. Moritomo   +33 more
core   +1 more source