Results 1 to 10 of about 867,842 (280)

All-inorganic perovskite photovoltaics for power conversion efficiency of 31% [PDF]

open access: yesScientific Reports, 2023
The lead-free perovskite halides emerge as the great alternative for highly efficient and environment friendly photovoltaics due to the inherent optoelectronic properties.
Lipsa Rani Karna   +2 more
doaj   +2 more sources

Power Conversion and Its Efficiency in Thermoelectric Materials [PDF]

open access: yesEntropy, 2020
The basic principles of thermoelectrics rely on the coupling of entropy and electric charge. However, the long-standing dispute of energetics versus entropy has long paralysed the field.
Armin Feldhoff
doaj   +3 more sources

Photoelectrochromic Devices with Enhanced Power Conversion Efficiency. [PDF]

open access: yesMaterials (Basel), 2020
In the present work, we propose a new architecture for partly covered photoelectrochromic devices with a modified anode layout, so that the TiO2 film is deposited first on the substrate, covering a small part of its surface, followed by the WO3 film that covers the remaining device area. As a result, the TiO2 film can be subjected to the proper thermal
Dokouzis A, Zoi D, Leftheriotis G.
europepmc   +4 more sources

Dual-Port Six-Band Rectenna with Enhanced Power Conversion Efficiency at Ultra-Low Input Power [PDF]

open access: yesSensors
In this paper, a novel topology and method for designing a multi-band rectenna is proposed to improve its RF-DC efficiency. The rectifier achieves simultaneous rectification using both series and parallel configurations by connecting two branches to the ...
Shihao Sun   +6 more
doaj   +2 more sources

Power conversion efficiency of non-equilibrium light absorption [PDF]

open access: yesAIP Advances, 2017
We deduce a novel expression for the non-equilibrium photochemical potential and the power conversion efficiency of non-equilibrium light absorption by a thermostated material. Application of our results for the case of electron migration from valence to
I. Santamaría-Holek   +2 more
doaj   +3 more sources

Multi-channel nanowire devices for efficient power conversion [PDF]

open access: yesNature Electronics, 2021
Nanowire-based devices can potentially be of use in a variety of electronic applications, from ultrascaled digital circuits to 5G communication networks. However, the devices are typically restricted to low-power applications due to the relatively low electrical conductivity and limited voltage capability of the nanowires.
L. Nela   +8 more
openaire   +1 more source

Chemical looping gasification of benzene as a biomass tar model compound using hematite modified by Ni as an oxygen carrier

open access: yesApplications in Energy and Combustion Science, 2023
The effective removal of tar is a major challenge for biomass gasification. Schemes based on chemical looping gasification (CLG) offer a promising alternative for converting biomass into syngas with low tar content.
Huang Zhen   +9 more
doaj   +1 more source

Research Paper: Investigating The Power Conversion Efficiency of Perovskite Solar Cells with The Inorganic Active Layer RbGeBr3 and Various Electron and Hole Collecting Layers [PDF]

open access: yesفیزیک کاربردی ایران, 2023
Perovskite solar cells (PSCs) are advancing swiftly due to their remarkable increase in power conversion efficiency (PCE) compared to traditional photovoltaic technologies.
Shima Valizadeh   +2 more
doaj   +1 more source

75%-efficiency blue generation from an intracavity PPKTP frequency doubler [PDF]

open access: yes, 2004
We report on a high-efficiency 461 nm blue light conversion from an external cavity-enhanced second-harmonic generation of a 922 nm diode laser with a quasi-phase-matched KTP crystal (PPKTP).
Arie   +36 more
core   +3 more sources

Efficient resonant power conversion

open access: yesIEEE Transactions on Industrial Electronics, 1990
The DC analysis of a series-resonant converter operating above resonant frequency is presented. The results are used to analyze the current form factor and its effect on the efficiency. The selection of the switching frequency to maximize the efficiency is considered.
Valtchev, S.S. (author)   +1 more
openaire   +3 more sources

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