Results 311 to 320 of about 22,790,288 (387)

Atomic‐Scale Mechanisms of Nucleation and Stabilization in CuCrO2 and CuFeO2 Delafossite Thin Films on Al2O3

Advanced Materials Interfaces, EarlyView.
In this work, a combination of 4D STEM phase reconstructions via iterative electron ptychography, spectroscopy, and conventional STEM imaging reveals detailed insights into the nucleation mechanism for the stable growth of Cu‐based delafossites on Al2O3 using CuCrO2 and CuFeO2 films grown via MBE as examples.
Anna Scheid, Qi Song, Stephanie Ribet, Colin Ophus, Y. Eren Suyolcu, Darrell G. Schlom, Tobias Heil, Peter A. van Aken   +7 more
wiley   +1 more source

Development of ZnO Buffer Layers for As‐Doped CdSeTe/CdTe Solar Cells with Efficiency Exceeding 20%

Advanced Materials Technologies, EarlyView.
Highly resistive ZnO has been used as the buffer layer in As‐doped CdSeTe/CdTe solar cells to achieve efficiencies higher than 20%. STEM images and EDX mapping show that the quality of the front interface is dependent on the ZnO deposition temperature. Unusually, chlorine is not observed at the front interface using EDX when the ZnO is deposited at 100
Luksa Kujovic, Xiaolei Liu, Mustafa Togay, Ali Abbas, Adam M. Law, Luke O. Jones, Kieran M. Curson, Kurt L. Barth, Jake W. Bowers, John M. Walls, Ochai Oklobia, Dan A. Lamb, Stuart J. C. Irvine, Wei Zhang, Chungho Lee, Timothy Nagle, Dingyuan Lu, Gang Xiong   +17 more
wiley   +1 more source

Streamlined Inkjet‐Printing of Stretchable Organic Photodetectors

Advanced Materials Technologies, EarlyView.
This work introduces stretchable photodetectors fully inkjet‐printed on stretchable substrates. It is demonstrated that printed stiff platforms effectively decouple strain from the stretched substrate and serve as a chemically resistant and mechanically rigid platform.
Mervin Seiberlich, Christian Rainer, Leon Skarjan, Luis Arturo Ruiz‐Preciado, Aleksandr Perevedentsev, Kai Xia, Peter Krebsbach, Stefan Schlisske, Uli Lemmer, Gerardo Hernandez‐Sosa   +9 more
wiley   +1 more source

Wavelength‐Selective, High‐Speed, Self‐Powered Isotype Heterojunction n+‐ZnO/n‐Si Photodetector with Engineered and Tunable Spectral Response

Advanced Materials Technologies, EarlyView.
Wavelength‐selective ZnO/Si photodetectors, operating with no power supply. Engineering of the constituting materials converts them from white‐light sensitive to only NIR‐sensitive. When external power is applied, the wavelength selectivity of the devices can be tuned to different spectral ranges.
Michael D. Tsanakas, Angelina Jaros, Yves Fleming, Metamorfi Efthimiadou, Tobias Voss, Renaud Leturcq, Spiros Gardelis, Maria Kandyla   +7 more
wiley   +1 more source

Progress in Flexible Perovskite Solar Cells: Paving the Way for Scalable Manufacturing

Advanced Materials Technologies, EarlyView.
Perovskite solar cells (PSCs) are well positioned for a successful market uptake. This is due to an unprecedented improvement of their efficiency and stability since the first report in 2009. In this review paper, the building blocks for the scalable manufacturing and future commercialization of flexible PSCs and their pathway to impact will be ...
Dimitar I. Kutsarov, Ehsan Rezaee, Jed Lambert, Walter Tevis Stroud, Apostolos Panagiotopoulos, S. Ravi P. Silva   +5 more
wiley   +1 more source

Beyond 3D: Smart Material Systems for Microscale 4D Printing

Advanced Materials Technologies, EarlyView.
Smart materials exhibit shape changes in response to their environment, enabling scientists to go beyond 3D in the rapidly growing field of 4D printing. This review covers recent advances, current challenges, and emerging trends in 4D printing on the microscale.
Daniel Maher, Marcin Piekarczyk, Babak Rezaei, Ada‐Ioana Bunea   +3 more
wiley   +1 more source

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Photovoltaic System

New Frontiers in Nanochemistry, 2020
： A fast and correct current control method is required for photovoltaic power generation systems to maximize the high - quality output power.Based on the analysis of deadbeat current control strategy ， some appropriate improve - ments are made on the ...
M. Mirica, M. Tudoran, M. Putz
semanticscholar   +1 more source

An Overall Distribution Particle Swarm Optimization MPPT Algorithm for Photovoltaic System Under Partial Shading

IEEE transactions on industrial electronics (1982. Print), 2019
Solar photovoltaic (PV) systems under partial shading conditions (PSCs) have a nonmonotonic P –V characteristic with multiple local maximum power points, which makes the existing maximum power point tracking (MPPT) algorithms unsatisfactory performance ...
Hong Li, Duo Yang, Wenzhe Su, Jinhu Lü, Xinghuo Yu   +4 more
semanticscholar   +1 more source

SIMULATION OF PHOTOVOLTAIC SYSTEMS

International Journal of Solar Energy, 1990
Abstract Seasonal and temporal unbalanced demands of electric power are increasing year after year. While an even demand from the load must be maintained in order for the development of a typical solar power generation system for an ordinary usage in the near future, the most important aspect is to develop a low-cost system.
Y. Ishihara, Y. Fujita, J. Kida, Y. Segawa, T. Tad Ata   +4 more
openaire   +2 more sources

Concentrator Photovoltaic Systems

ECS Transactions, 2012
This paper deals with experimental concentrator photovoltaic system build in cooperation with Solartec s.r.o. company. The system is used to test hypotheses and study the behavior during its operation. The aim is to measure concentration ratio, temperature and electrical characteristics and to compare advantages of active and passive cooling of ...
A. Vesely, Jiri Vanek, R. Stojan
openaire   +2 more sources