Results 91 to 100 of about 2,029 (172)

Broad‐Spectral Response Lead Halide Perovskite Solar Cells Through Integration of Multifunctional Organic Bulk‐Heterojunction and Quantum‐Cutting Downconversion Materials

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Expanding near‐infrared (NIR) spectral response and utilizing ultraviolet (UV) photons are effective strategies for enhancing the power conversion efficiency (PCE) of lead halide perovskite solar cells (PSCs). However, the range of NIR spectral response extension and the utilization of UV light for devices are not enough, and the loss of ...
Li He   +9 more
wiley   +1 more source

Human visual cortical responses to specular and matte motion flows [PDF]

open access: yes, 2015
Determining the compositional properties of surfaces in the environment is an important visual capacity. One such property is specular reflectance, which encompasses the range from matte to shiny surfaces. Visual estimation of specular reflectance can be
Doerschner, K.   +4 more
core   +1 more source

Analysis of MPPT Failure and Development of an Augmented Nonlinear Controller for MPPT of Photovoltaic Systems under Partial Shading Conditions

open access: yesApplied Sciences, 2017
The output–voltage–power curves of photovoltaic (PV) arrays exhibit complex multi-peak shapes when local shading occurs. The existing maximum power point tracking (MPPT) algorithms to solve this multi-peak problem do not consider the possibility of ...
Mingxuan Chen   +3 more
doaj   +1 more source

Exploring Wide‐Range Alkyl Bridge Length Variations in Polymer Semiconductors: From Pristine to Blend Films for High‐Mobility Stretchable TFTs

open access: yesSmall, Volume 22, Issue 13, 3 March 2026.
A side‐chain engineering strategy enables polymer semiconductors to achieve record‐high mobility and mechanical resilience in intrinsically stretchable transistors. By correlating crystallinity with charge transport and stretchability, this work establishes a predictive design rule.
Hyunbum Kang   +15 more
wiley   +1 more source

Reorientation‐Driven Degradation in Oriented Perovskite Films: Shifting Facet Engineering to Thermodynamic Stability

open access: yesSmall, Volume 22, Issue 14, 6 March 2026.
The role of crystallographic orientation in the thermal stability of narrow‐bandgap perovskite solar cells remains largely underexplored. In Sn–Pb mixed perovskite films, strong orientation can inherently compromise stability under prolonged thermal stress, triggering reorientation‐induced degradation through microstrain accumulation.
Xiaojing Ci   +10 more
wiley   +1 more source

A Unified Approach to Maximum Power Point Tracking and I-V Curve Determination of Photovoltaic Arrays from Real-time Measurements [PDF]

open access: yes, 2017
In recent years we have seen a considerable increase in the installed capacity of Photovoltaic (PV) power generating plants worldwide. This increase is primarily attributed to the decrease in the cost of installation and the awareness towards the ...
Ahmad, Jawad
core   +1 more source

Gateways, Funnels, and Stackers: How People Hide Property Ownership Through Offshore Structures

open access: yesThe British Journal of Sociology, Volume 77, Issue 2, Page 318-331, March 2026.
ABSTRACT How do wealthy individuals use offshore financial structures like shell companies to protect personal assets? And how is such offshore wealth structuring itself variably organized? Moving beyond conceptualizations of offshore as concerning only individual tax havens, this article investigates offshore wealth structuring as a fundamentally ...
Kristin Surak, Johnathan Inkley
wiley   +1 more source

Engineering metal oxides for UV-stable perovskite solar cells [PDF]

open access: yes, 2018
This thesis is a study of the role of the metal oxide electron transporting material in perovskite solar cells. The central research question is how the metal oxide influences the stability of perovskite solar cells and how the metal oxide can be ...
Roose, Bart, Steiner, Ullrich
core  

Enhanced Harmony Search Algorithm for Maximum Power Point Tracking Under Partial Shading in PV Systems

open access: yesIEEE Access
Multiple power peaks are introduced under nonuniform irradiation conditions in photovoltaic (PV) systems. However, conventional maximum power point tracking (MPPT) algorithms, such as the perturb-and-observe (P&O) algorithm, are only effective ...
Geon Hee Lee, Zong Woo Geem, Jehyuk Won
doaj   +1 more source

Optimizing photovoltaic systems performance under partial shading using an advanced cuckoo search algorithm [PDF]

open access: yes
Partial shading negatively impacts power output in photovoltaic systems (PVs), causing multiple local maximum power points (LMPP) instead of a single global maximum power point (GMPP).
Benlafkih, Abdessamad   +5 more
core   +2 more sources

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