Defect Dynamics and Solution‐Processed Interconnects in Perovskite‐Organic Tandem Solar Cells
Advanced Science, EarlyView.In this study, we identify the underlying cause of efficiency losses in WBG perovskites, which is ascribed to the presence of mobile defects distributed at surface regions. We further employ effective passivation agent with functional chemical groups to facilitate the healing of the mobile defects, thereby enhancing the VOC to 1.35 V and champion ...
Yingjie Hu +12 more
wiley +1 more source
Modelling, analysis, and stability assessment of wind turbine generator connected to a low inertia AC-DC microgrid with frequency support capability. [PDF]
Sci RepZenhom IA, Marei MI, Mohamed AMI.
europepmc +1 more source
A Soft, Flexible Implant for Wireless Photothermal–Pyroelectric Neurostimulation
Advanced Science, EarlyView.A replication strategy is used to enlarge the exposed surface area of barium titanate within flexible films with embedded carbon nanotubes, enabling efficient photothermal‐pyroelectric stimulation. Polar crystalline nanosheets show superior performance in guiding neural progenitor cells toward neuronal differentiation.
Jiang Wu +7 more
wiley +1 more source
Active line model identification protection based on characteristic frequency phase for dual-end weakly-fed AC system. [PDF]
Sci RepHou J, Zhang Z, Fan Y, Song G, Wu X.
europepmc +1 more source
Advanced Science, EarlyView.The HfxZr1‐xO2‐based ferroelectric/antiferroelectric bilayer capacitor exhibits morphotropic‐phase‐boundary behavior with a high dielectric constant (∼52) at 2 V. Phase engineering stabilizes o/t‐phase coexistence and suppresses m‐phase formation, enabling capacitance enhancement and self‐optimization under cycling for scalable low‐voltage, high‐κ ...
Junseok Kim +5 more
wiley +1 more source
New flexible bidirectional converter for electric vehicle substations connecting microgrids. [PDF]
Sci RepVinh NT, Nguyen VT, Van Dung N, Vu HS.
europepmc +1 more source
Advanced Science, EarlyView.Increasing the density and homogeneity of soft magnetic composites are critical for achieving high power density and low core loss. This work proposes a novel strategy by combining ultrasonic‐assisted pressing and cold pressing. In this line, the density and permeability of magnetic core have been increased a lot, while the core loss is decreased ...
Xiaoying Huang +15 more
wiley +1 more source
Disturbance observer based multiloop proportional feedback system for output voltage regulation in three phase AC to DC converters. [PDF]
Sci RepLee H, Kim D, Park HC, Kim SK, Kim Y.
europepmc +1 more source
In‐Wheel Piezoelectric DC Power Generator With Zero Resistive Torque
Advanced Science, EarlyView.In this paper, we present a wheel‐shaped direct‐current piezoelectric generator (DC‐PG) that fundamentally overcomes these constraints by producing phase‐stable DC electricity directly from rolling motion. By embedding this system into suitcase wheels, we demonstrated a fully integrated real‐time location tracking system powered solely by mechanical ...
Hyun Soo Kim +19 more
wiley +1 more source
Enhancing stability in renewable energy transmission using multi-terminal HVDC systems with grid-forming controls for offshore and onshore wind integration. [PDF]
Sci RepShufian A +3 more
europepmc +1 more source