Results 141 to 150 of about 17,119 (265)
Photovoltaic Effect in a III‐IV‐V Compound Semiconductor
Progress in Photovoltaics: Research and Applications, EarlyView.A large reduction of the GaAs band gap is obtained with incorporation of 6.5% Ge during epitaxy without introducing extended defects or composition inhomogeneity. Heterojunction solar cell devices were fabricated with 0.76‐V open circuit voltage and an internal quantum efficiency above 40% at energies below the bandgap of the GaAs emitter.
José M. Ripalda +13 more
wiley +1 more source
Development of a linear stage actuator for UHV STM/AFM
, 2011 The aim of this diploma thesis is to develop a linear positioning stage for Ultra High Vacuum (UHV) environment. Simple prototypes of the linear positioning stage were designed and incorporated as part of a multiaxis sample manipulator for a UHV Scanning
Pavelec, Jiří
core +1 more source
Physik in unserer Zeit, EarlyView.Sehen ist der erste Schritt in Richtung Verstehen. Dieses Prinzip gilt von der Beobachtung ferner Galaxien bis hin zur Untersuchung einzelner Atome und hält damit über viele Größenordnungen. Heutzutage ermöglichen moderne Mikroskope die Beobachtung einzelner Atome und sogar die gezielte Kontrolle chemischer Reaktionen einzelner Moleküle ...
Jan Balajka, Johanna I. Hütner-Reisch
wiley +1 more source
Liquid‐Processed 2D Aromatic Amorphous Carbon: Defect Engineering and Universal Transport Scaling
Small, EarlyView.Liquid‐processed graphene oxide (GO) thin films undergo a controllable crystalline–to–amorphous transition driven by thermal quenching. By kinetically tuning oxygen‐driven defect formation during reduction, scalable 2D aromatic amorphous carbon phases are stabilized, directly linking nanoscale disorder and defect topology to electronic transport ...
Fabiola Liscio +22 more
wiley +1 more source
Engineering Cobalt‐Based Thin Films for Fischer–Tropsch Synthesis
Small, EarlyView.Cobalt thin films with tailored crystalline phases and oxidation states serve as well‐defined model Fischer–Tropsch catalysts. In situ synchrotron GIXRD reveals distinct reduction behaviour and phase evolution, while catalytic testing demonstrates phase‐dependent hydrocarbon selectivity and improved structural stability. These model thin‐film catalysts
Muhammad Hamid Raza +14 more
wiley +1 more source
Small, EarlyView.Mg2+ confined within poly(heptazine imide) acts as a heterogenized interfacial charge bridge capable to couple synergistically the semiconductor with Pt co‐catalysts, thus enhancing hydrogen evolution. Through water polarization and hydroxide stabilization, a dynamic Mg2+‐OHδ−‐Hδ+‐Pt motif facilitates proton transfer and overcomes interfacial electron ...
Gabriel A. A. Diab +17 more
wiley +1 more source
Energy infrastructure construction and enterprises' Artificial Intelligence development: Evidence from China's ultra-high voltage transmission projects. [PDF]
PLoS OneLin W, Guo Y, Wang B, Cheng Q.
europepmc +1 more source
Small, EarlyView.A slightly buckled 2D kagome metal‐organic framework (MOF) adsorbed on Ag(111) hosts localized spins which are Kondo‐screened by the underlying metal substrate. Using the tip of a scanning tunneling microscope, the MOF can be vertically manipulated to controllably change its adsorption height and with it, the Kondo coupling strength.
Benjamin Lowe +11 more
wiley +1 more source
Preparation of graphene samples for experiments under UHV conditions
, 2015 This bachelor thesis deals with electrical conductivity of a graphene sample and preparation of a graphene field-effect transistor. In the theoretical part of the thesis, we describe electronic properties of graphene, preparation of graphene by CVD and ...
Mareček, David
core
Energy Internet, EarlyView.ABSTRACT During China's 15th Five‐Year Plan period, electro‐hydrogen synergy is evolving from isolated project demonstration towards a broader rethinking of cross‐regional energy allocation. Against the backdrop of market‐oriented electricity pricing reform and the improvement of local renewable energy consumption mechanisms, long‐distance allocation ...
Jin Lin +6 more
wiley +1 more source