Results 221 to 230 of about 17,353,436 (262)

Transient Charging Dynamics in Stacked Ga2O3/ZnO Photovoltaic Units Governing Wavelength‐Selective Polarity Switching

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work reveals a “Photovoltaic‐Capacitance” coupling mechanism in stacked Ga2O3/ZnO devices, defining the ZnO/graphene interface as a novel Photovoltaic Dynamic‐Capacitor (PDC). The wavelength‐selective bipolar response enables a physical layer secure communication protocol based on ternary optical logic (“1,” “0,” “−1”).
Songqi Zhao   +6 more
wiley   +1 more source

Research Progress of Three‐Terminal Perovskite/Silicon Tandem Solar Cells Based on Back‐Contact Silicon

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Perovskite/silicon tandem solar cells offer efficiencies beyond 30%, yet conventional architectures face trade‐offs between optical performance and current matching. Three‐terminal tandems employing silicon back‐contact bottom cells eliminate the current‐matching constraint while minimizing optical losses, offering superior energy yield under real ...
Yunhao Fan   +4 more
wiley   +1 more source

A New Approach for Optimizing a Bipolar Charge Transport Model for Dielectric Materials: Theoretical Framework

open access: yesIEEE Transactions on Dielectrics and Electrical Insulation, 2021
A bipolar charge transport model with two levels of traps (shallow and deep traps) is employed to describe and investigate the dynamic behavior of the space charge in low-density polyethylene (LDPE). This kind of model requires some initial experimental conditions alongside a set of parameters.
Hallak, Khaled   +4 more
exaly   +4 more sources

Simulation of space charge behavior in LDPE with a modified of bipolar charge transport model

Proceedings of 2014 International Symposium on Electrical Insulating Materials, 2014
In this paper, an simply ion charge transport model is proposed, compared with bipolar charge transport model. It consists of ion generation by field assisted dissociation of impurities, transport, trapping and recombination in polymer. To simplify the model, it is assumed that only one type of impurity existing in polymer.
null Jiandong Wu   +3 more
openaire   +3 more sources

Charge transport properties of insulators revealed by surface potential decay experiment and bipolar charge transport model with genetic algorithm

IEEE Transactions on Dielectrics and Electrical Insulation, 2012
To evaluate spacecraft charging level and predict surface and internal electrostatic discharging (ESD) probability, it is important to know the charge transport properties of high insulation materials, such as epoxy resin/glass composition (FR4), Teflon and polyimide. In present work, the charge transport properties of the space insulators are revealed
null Daomin Min   +3 more
openaire   +3 more sources

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