Novel Concepts for Light Management in Flexible Photovoltaics

2011 ◽  
Author(s):  
Ethan Klem ◽  
Michael Dickey ◽  
Jay Lewis
Keyword(s):  
Light Management

Non-Plasmonic SERS with Silicon: Is It Really Safe? New Insights into Opto-Thermics of Core/Shell Microbeads

2018 ◽  
Author(s):  
Nicolò Bontempi ◽  
Irene Vassalini ◽  
Stefano Danesi ◽  
Matteo Ferroni ◽  
Paolo Colombi ◽  
...  
Keyword(s):  
Critical Role ◽  
Raman Laser ◽  
Core Shell ◽  
Thermal Coupling ◽  
Melting Points ◽  
Experimental Proof ◽  
Weakly Coupled ◽  
Light Management ◽  
Laser Sources ◽  
First Time

<p>Here we investigate for the first time the opto-thermal behavior of SiO<sub>2</sub>/Si core/shell microbeads (Si-rex) irradiated with three common Raman laser sources (lambda=532, 633, 785 nm) under real working conditions. We obtained an experimental proof of the critical role played by bead size and aggregation in heat and light management, demonstrating that in the case of strong opto-thermal coupling the temperature can exceed that of the melting points of both core and shell components. In addition, we also show that weakly coupled beads can be utilized as stable substrates for plasmon-free SERS experiments.</p>

scholarly journals Recent advancements and perspectives on light management and high performance in perovskite light-emitting diodes

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Shaoni Kar ◽  
Nur Fadilah Jamaludin ◽  
Natalia Yantara ◽  
Subodh G. Mhaisalkar ◽  
Wei Lin Leong
Keyword(s):  
High Performance ◽  
Light Propagation ◽  
Light Emission ◽  
Review Article ◽  
Rapid Progress ◽  
Light Emitting ◽  
Materials Engineering ◽  
Perovskite Materials ◽  
Light Management ◽  
Photon Recycling

Abstract Perovskite semiconductors have experienced meteoric rise in a variety of optoelectronic applications. With a strong foothold on photovoltaics, much focus now lies on their light emission applications. Rapid progress in materials engineering have led to the demonstration of external quantum efficiencies that surpass the previously established theoretical limits. However, there remains much scope to further optimize the light propagation inside the device stack through careful tailoring of the optical processes that take place at the bulk and interface levels. Photon recycling in the emitter material followed by efficient outcoupling can result in boosting external efficiencies up to 100%. In addition, the poor ambient and operational stability of these materials and devices restrict further commercialization efforts. With best operational lifetimes of only a few hours reported, there is a long way to go before perovskite LEDs can be perceived as reliable alternatives to more established technologies like organic or quantum dot-based LED devices. This review article starts with the discussions of the mechanism of luminescence in these perovskite materials and factors impacting it. It then looks at the possible routes to achieve efficient outcoupling through nanostructuring of the emitter and the substrate. Next, we analyse the instability issues of perovskite-based LEDs from a photophysical standpoint, taking into consideration the underlying phenomena pertaining to defects, and summarize recent advances in mitigating the same. Finally, we provide an outlook on the possible routes forward for the field and propose new avenues to maximally exploit the excellent light-emitting capabilities of this family of semiconductors.

scholarly journals Colloidal Lithography for Photovoltaics: An Attractive Route for Light Management

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1665
Author(s):  
Rui D. Oliveira ◽  
Ana Mouquinho ◽  
Pedro Centeno ◽  
Miguel Alexandre ◽  
Sirazul Haque ◽  
...  
Keyword(s):  
Solar Cell ◽  
High Throughput ◽  
Colloidal Lithography ◽  
High Profile ◽  
Micro Patterning ◽  
Light Management ◽  
Additional Costs ◽  
Patterning Technique ◽  
Solar Electricity ◽  
Effective Water

The pursuit of ever-more efficient, reliable, and affordable solar cells has pushed the development of nano/micro-technological solutions capable of boosting photovoltaic (PV) performance without significantly increasing costs. One of the most relevant solutions is based on light management via photonic wavelength-sized structures, as these enable pronounced efficiency improvements by reducing reflection and by trapping the light inside the devices. Furthermore, optimized microstructured coatings allow self-cleaning functionality via effective water repulsion, which reduces the accumulation of dust and particles that cause shading. Nevertheless, when it comes to market deployment, nano/micro-patterning strategies can only find application in the PV industry if their integration does not require high additional costs or delays in high-throughput solar cell manufacturing. As such, colloidal lithography (CL) is considered the preferential structuring method for PV, as it is an inexpensive and highly scalable soft-patterning technique allowing nanoscopic precision over indefinitely large areas. Tuning specific parameters, such as the size of colloids, shape, monodispersity, and final arrangement, CL enables the production of various templates/masks for different purposes and applications. This review intends to compile several recent high-profile works on this subject and how they can influence the future of solar electricity.

scholarly journals Stress and immunity in poultry: light management and nanotechnology as effective immune enhancers to fight stress

2021 ◽  
Vol 26 (3) ◽  
pp. 457-472
Author(s):  
Haitham G. Abo-Al-Ela ◽  
Seham El-Kassas ◽  
Karima El-Naggar ◽  
Safaa E. Abdo ◽  
Ali Raza Jahejo ◽  
...  
Keyword(s):  
Light Management

New Light Management Concepts for Thin-Film Silicon Solar Cells

2008 ◽  
Vol 1101 ◽  
Author(s):  
Helmut Stiebig ◽  
Christian Haase ◽  
Silvia Jorke ◽  
Philipp Obermeyer ◽  
Etienne Moulin ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Metallic Nanoparticles ◽  
Light Propagation ◽  
Light Trapping ◽  
Cell Structure ◽  
Thin Film Silicon ◽  
Diffractive Element ◽  
Management Concepts ◽  
Light Management

AbstractAn efficient utilization of the sun spectrum is a key issue in the field of thin-film silicon solar cell technology. Therefore, different strategies for enhanced light absorption were presented in the last years. In order to achieve a better understanding of light scattering at nanotextured interfaces the optical properties of a large variety of samples were studied. The angle resolved scattering behavior was analyzed by means of a developed ray tracing model. As an alternative to randomly textured substrates, the influence of periodically textured substrates on the light propagation in solar cells was experimentally and numerically studied with respect to improved light in-coupling and light trapping. Based on a deeper understanding a new tandem cell structure with a diffractive element between the top and bottom cell was developed. Finally, the influence of metallic nanoparticles on the cell performance was studied.

Energy yield of perovskite solar cells: Influence of location, orientation, and external light management

2022 ◽  
Vol 234 ◽  
pp. 111421
Author(s):  
Benjamin Lipovšek ◽  
Marko Jošt ◽  
Špela Tomšič ◽  
Marko Topič
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Energy Yield ◽  
Light Management
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