Results 51 to 60 of about 85,229 (310)

A technology assessment of photovoltaic concentrator systems (CPV) and their prospects [PDF]

open access: yes, 2008
This dissertation attempts to put some clarity and order into our understanding of the dynamic development of Concentrator Photovoltaic Systems (CPVs) in the world today.
Stafford, Peter
core  

Hybrid Solar Cell/Triboelectric Nanogenerator Based on Stable Two‐Dimensional Covalent Organic Frameworks

open access: yesAdvanced Functional Materials, EarlyView.
This study highlights the integration of stable two‐dimensional covalent organic framework (COF) films as photoactive layers in hybrid nanoenergy devices. The results demonstrate their capacity to generate electricity under both sunny and rainy conditions, showcasing versatility and resilience.
Joab D. Guerrero   +13 more
wiley   +1 more source

The feed-in tariff in the UK : a case study focus on domestic photovoltaic systems [PDF]

open access: yes, 2013
This paper explores the photovoltaic (PV) industry in the United Kingdom (UK) as experienced by those who are working with it directly and with consideration of current standards, module efficiencies and future environmental trends.
Kirwan, Kerry   +3 more
core   +1 more source

Outdoor test setup for concentrating photovoltaic and thermal (CPVT) systems

open access: yes, 2022
S.175-179In concentrating photovoltaic and thermal (CPVT) systems, direct sunlight is focused on a combined central receiver in order to generate heat and electricity at the same time.
Heimsath, Anna   +5 more
core   +1 more source

Is It Real Type‐II or S‐Scheme? A Three‐Phase Diagnostic Protocol for Identifying Potentially Mislabeled Heterojunction Photocatalysts

open access: yesAdvanced Functional Materials, EarlyView.
Diagnostic analysis via the heterojunction validation funnel. The funnel illustrates the hierarchical stratification of 30 reported Type‐II systems based on the three‐phase, seven‐step diagnostic framework. Complete validation through all phases is achieved by only 3.3% of systems, while 96.7% lack full mechanistic validation, revealing a pervasive ...
Ki‐Hyun Kim
wiley   +1 more source

Study of Photovoltaics and LED Energy Efficiency: Case Study in Hungary

open access: yesEnergies, 2018
Photovoltaic (PV) energy and energy efficiency have an increasing role in global energy usage. This paper is a study of building photovoltaic systems (PVS) to modernize existing or developed street lighting systems in Hungarian villages of 900–1200 ...
Gábor Pintér   +3 more
doaj   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

open access: yesAdvanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong   +12 more
wiley   +1 more source

Centralized vs distributed (power optimizer) PV system architecture field test results under mismatched operating conditions

open access: yes, 2011
The number of Building Integrated Photovoltaic (BIPV) system installations is increasing as different new and specific solar cells and modules are developed. The great advantages of BIPV systems should be enough to achieve their massive implantation, but
R. Alonso   +11 more
core   +1 more source

Analysis of photovoltaic plants with battery energy storage systems (PV-BESS) for monthly constant power operation [PDF]

open access: yes, 2023
Photovoltaic generation is one of the key technologies in the production of electricity from renewable sources. However, the intermittent nature of solar radiation poses a challenge to effectively integrate this renewable resource into the electrical ...
Bayod-Rújula, Ángel A.   +3 more
core   +1 more source

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora   +17 more
wiley   +1 more source

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