Results 91 to 100 of about 36,793 (298)
Advanced Science, EarlyView.We develop a magnesium‐doping strategy to delicately modulate the alkaline substrate‐induced reactions, ensuring high‐quality CsPbI3 perovskite emissive layers with substantially improved stability. The resultant deep‐red LEDs demonstrate a high peak external quantum efficiency of 23.62% and an exceptional half‐lifetime stability of 376 h at 20 mA cm−2,
Zhennan Tian +11 more
wiley +1 more source
Advanced Science, EarlyView.Sulfur‐precursor and ligand engineering regulate the nucleation, morphology, and energetic disorder of CuSbS2 nanocrystals for dopant‐free inorganic hole‐transport layers in perovskite solar cells. Thiourea‐assisted synthesis combined with optimized OAm/OAc coordination suppresses excessive anisotropic growth, enabling mixed plate‐like/quasi‐spherical ...
Ibrahimhan Dilci, Savas Sonmezoglu
wiley +1 more source
Materials Science for Energy Technologies, 2019 In this work, Graphene-SnO2 nanocomposite is synthesized by hydrothermal method for supercapacitor electrode material. The characterizations revealed that SnO2 nanoparticles exhibited tetragonal structure with an average crystalline size of ∼33 nm from ...
Sai Ram Eedulakanti +5 more
doaj +1 more source
, 2017 We designed and synthesized CuO/SnO2/Pd hollow microboxes, which was developed based on pre pared Cu2O cubes coated Pd nanosheets, controlled oxidation of CU2O/Pd, and etching of Cu2O/CuO/Pd by SnCl4 solution.
An, Xuebin +7 more
core +1 more source
Advanced Science, EarlyView.An n‐type SnOx layer is constructed in situ on tin perovskite surfaces by converting surface‐enriched Sn4+ species through a one‐step SnCl2·2H2O treatment. This strategy enhances interfacial charge extraction and suppresses defect‐induced degradation, boosting the power conversion efficiency from 13.21% to 16.02% while maintaining negligible efficiency
Feng Yang +9 more
wiley +1 more source
PHOTOEMISSION-STUDY ON THE SNO2/P A-SICX-H INTERFACE
, 1991 Ultraviolet and X-ray photoemission spectroscopies (UPS and XPS) have been employed to SnO2 and its interface with P-type a-SiCx:H. The HeI valence band spectra of SnO2 show that the valence band maximum (VBM) shifts from 4.7 eV to 3.6 eV below the ...
KONG GL +5 more
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CARATTERIZZAZIONE ELETTRICA E SPETTROSCOPICA AD IMPEDENZA DI OSSIDI METALLICI NANOSTRUTTURATI PER IL RILEVAMENTO DI ALCANI VOLATILI [PDF]
, 2009 Chemoresistive gas sensors using semiconductor metal-oxides have proven to be excellent in important characteristics such as sensitivity, long-term stability, robustness and price. Solid solutions of mixed Sn and Ti oxides have shown promising results in
Cervi, Alan
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Advances in Se Wide‐Bandgap Photovoltaics and TexSe1‐x SWIR Photodiodes
Advanced Science, EarlyView.In this review, fundamental properties and current challenges in Se photovoltaics (PVs) for tandem and indoor PVs and TexSe1‐x alloys for short wave infrared photodiodes are discussed. A case is made for the practicality of elemental chalcogenide optoelectronics, and a pathway toward resolving the key challenges in these respective technologies is ...
Adam D. Alfieri, Deep Jariwala
wiley +1 more source
International Journal of Electrochemical Science, 2013 Pt/C-Sb2O5.SnO2, PtPd/C-Sb2O5.SnO2 and PtPdSn/C-Sb2O5.SnO2 electrocatalysts were prepared in a single step using H2PtCl6.6H2O, Pd(NO3)2.2H2O and SnCl2.2H2O as metal sources, sodium borohydride as reducing agent and a physical mixture of 85% Vulcan Carbon
R.M. Piasentin +5 more
doaj +1 more source
Surface characterization study on SnO2 powder modified by thiourea
, 2005 The SnO2 material prepared by sol-gel method was modified by thiourea solution in different concentrations (0.05, 0.1 and 0.2 mol dm(-3)). Then the structure and the average grain size of the SnO2 material were investigated by X-ray power diffraction. In
Liu FM +4 more
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