Article
Energy & Fuels
Olga Shepovalova, Andrey Yu Izmailov, Yakov P. Lobachevsky, Alexey S. Dorokhov, Sergei Chirkov
Summary: This article discusses the design, experimental studies, and application of toroidal concentrators of solar radiation. The base model is a semi-torus obtained by cutting a full torus, and the advantages of toroidal concentrators as well as the optimal selection of radiation receivers are explored.
Article
Polymer Science
Elisa Della Latta, Francesca Sabatini, Cosimo Micheletti, Marco Carlotti, Francesca Martini, Francesca Nardelli, Antonella Battisti, Ilaria Degano, Marco Geppi, Andrea Pucci, Svenja Pohl, Guido Kickelbick
Summary: In this study, flexible luminescent solar concentrators (LSCs) with a size of 5 x 5 cm(2) were prepared by integrating a reactive perylene bisimide fluorophore (FC546) into a polysiloxane network. The LSCs exhibited higher thermal and light stability, as well as superior device efficiency, compared to other similar-sized flexible LSC systems.
Article
Chemistry, Physical
Stefania Castelletto, Alberto Boretti
Summary: In this paper, the authors provide a technology summary and update on luminescent solar concentrators (LSCs) and their latest research advances. LSCs are optoelectronic devices that absorb solar radiation and re-emit visible light towards photovoltaic cells, converting radiant energy into electricity. This review covers the basic principles, performance analysis, fluorophores used, and proposed designs of LSCs. It also discusses using energy transfer and photonics to improve their efficiency. Although LSCs are primarily used for building integrated photovoltaics, other potential applications are briefly mentioned. The article highlights the importance of fluorophores and device designs in achieving optimal electrical power conversion, while scalability and stability limitations currently hinder their wider use.
Article
Nanoscience & Nanotechnology
Tomi K. K. Baikie, James Xiao, Bluebell H. H. Drummond, Neil C. C. Greenham, Akshay Rao
Summary: Luminescent solar concentrators (LSCs) have the potential to improve solar energy capture when coupled to traditional photovoltaics (PV) by concentrating direct and diffuse solar radiation onto a smaller area of PV. However, LSCs suffer from various optical losses that are difficult to quantify with simple power conversion efficiency measurements. In this study, we used spatially resolved photoluminescence quantum efficiency measurements to identify and analyze different loss processes in large-area LSCs, including out-coupling, self-absorption via emitters, and self-absorption from the LSC matrix. These measurements also provided insights into the optimization of optical properties and guided the design of future LSCs for improved solar energy capture.
Review
Chemistry, Multidisciplinary
Bolong Zhang, Guanpeng Lyu, Elaine A. Kelly, Rachel C. Evans
Summary: This article introduces the potential of Förster resonance energy transfer (FRET) in enhancing the performance of luminescent solar concentrators (LSCs), including key criteria and interactions with the host material. The authors aim to showcase the potential of FRET-LSCs in both conventional solar harvesting and emerging LSC-inspired technologies, while also encouraging diverse participation from researchers by addressing unanswered questions in this field.
Article
Green & Sustainable Science & Technology
Anurag Pramanik, Harjit Singh, Ram Chandra, Virendra Kumar Vijay, S. Suresh
Summary: Direct solar radiation absorbing nanofluids have the potential to absorb a wide spectrum of solar radiation and displace selectively coated metallic receivers in solar thermal collectors. Parameters such as nanoparticle concentration can influence their long-term usage. A rational framework combining experimental and computational approaches can be used to identify design parameters relevant for application of nanofluids in thermal collectors.
Article
Construction & Building Technology
Zhiying Song, Jie Ji, Zhaomeng Li
Summary: The study investigates the combination of concentrated photovoltaics and direct-expansion solar-assisted heat pump, and finds that photovoltaic heat pump systems based on different concentrators show variations in electrical efficiency, coefficient of performance, and exergy efficiency.
ENERGY AND BUILDINGS
(2021)
Article
Optics
Pengfei Xia, Shuhong Xu, Chunlei Wang, Dayan Ban
Summary: Perovskite-based LSCs have attracted much attention due to their convenient preparation process, low cost, and high quantum yields, but optical losses have been a major issue affecting their performance. Various strategies have been implemented to enhance the optical performance, and cutting-edge solutions have been proposed to enable high-performance perovskite-based LSCs.
Article
Materials Science, Multidisciplinary
Chiara Ceriani, Francesca Corsini, Giuseppe Mattioli, Sara Mattiello, Daniele Testa, Riccardo Po, Chiara Botta, Gianmarco Griffini, Luca Beverina
Summary: Luminescent solar concentrators are gaining attention for building integrated photovoltaics, requiring careful material optimization for efficiency and sustainability. By designing green chemistry synthetic materials and comparing them to commercially available alternatives, comparable performance with improved sustainability and scalability can be achieved.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Optics
J. Arrue, A. Vieira, M. B. Garcia-Ramiro, F. Jimenez, J. Grandes, M. A. Illarramendi, J. Zubia, N. Guarrotxena
Summary: This study analyzes ways to improve the optical efficiency of luminescent solar concentrators based on multiple poly(methyl methacrylate) optical fibers doped with promising types of dyes. By comparing the performance of fibers doped with different dyes at various concentrations, the research provides insights on achieving a better balance between sunlight trapping efficiency and light reabsorption in stacked fibers connected to a photovoltaic cell.
Article
Optics
Leonid L. Doskolovich, Egor V. Byzov, Albert A. Mingazov, Gor J. Karapetian, Vitalii I. Smorodin, Nikolay L. Kazanskiy, Dmitry A. Bykov, Evgeni A. Bezus
Summary: This paper discusses a version of the supporting quadric method for designing freeform mirrors that generate prescribed irradiance distributions in the near field. The method is derived for the general case of an incident beam with an arbitrary wavefront. As an example, a freeform mirror is designed to generate a complex-shaped uniform irradiance distribution in the form of the abbreviation IPSI on a zero background for the special case of a plane incident wavefront. The designed mirror is fabricated and qualitatively investigated in a proof-of-concept optical experiment, with the experimental results confirming the correctness of the proposed approach and demonstrating the manufacturability of the mirrors designed using the considered method.
Article
Biochemistry & Molecular Biology
Francesco Galeotti, Lorenzo Scatena, Franco Trespidi, Mariacecilia Pasini
Summary: This study presents a new solar concentrator that uses a smart window to trap and convert sunlight into electricity. By utilizing the thermotropism of cellulose ethers, the researchers achieved self-tracking and optimized the properties of the thermotropic fluid.
Article
Environmental Sciences
Yuvarajan Devarajan, Beemkumar Nagappan, Ganesan Subbiah, Elangovan Kariappan
Summary: The research aims to optimize a solar-powered ejector refrigeration system as a potential replacement for conventional air conditioners, with the goal of reducing energy consumption and improving efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Yunzhi Gu, Xiang Yao, Huaxiu Geng, Guijian Guan, Minglie Hu, Mingyong Han
Summary: TLSCs incorporating heterophase lead-free perovskites exhibit high efficiency and excellent stability, with an optical conversion efficiency of 1.15% and a high average visible transmission of 86.70%, showing dual-color white emission between 350 and 760 nm.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Optics
Guochao Gu, Bao Zhang, Ronghua Su
Summary: The paper presents a ray-mapping design method based on solving a simplified Monge-Ampere (M-A) equation, and verifies its effectiveness through two examples with complex illumination output.
OPTICS COMMUNICATIONS
(2021)
Article
Energy & Fuels
Pablo Zamora, Marina Buljan, Pablo Benitez, Yang Li, Juan Carlos Minano, Oskar Gonzalez
PROGRESS IN PHOTOVOLTAICS
(2016)
Article
Optics
Bharathwaj Narasimhan, Pablo Benitez, Juan C. Minano, Milena Nikolic, Dejan Grabovickic
Article
Optics
Simone Sorgato, Ruben Mohedano, Julio Chaves, Maikel Hernandez, Jose Blen, Dejan Grabovickic, Pablo Benitez, Juan Carlos Minano, Hugo Thienpont, Fabian Duerr
Article
Optics
Pablo Benitez, Milena Nikolic, Juan C. Minano
Article
Optics
Hakon J. D. Johnsen, Juan C. Minano, Jan Torgersen
Summary: Line-focus solar concentrators have been limited by the 2D concentration limit, but we propose a new design principle that bypasses this limit and achieves higher concentration ratios. By combining the concepts of etendue squeezing and tracking integration, we demonstrate a design example and provide efficiency values under different design conditions. This design principle opens up the design space for high-concentration line-focus solar concentrators and allows for a reconsideration of the trade-off between concentration and acceptance angle.
Article
Optics
Pablo Benitez, Milena Nikolic, Juan C. Minano, Mithra Anand, Asuncion Santamaria
Summary: Second-order semi-aplanatism improves imaging quality, particularly for high aspect ratio sensors. Designing such optical devices involves the use of freeform surfaces and a specific algorithm.
Proceedings Paper
Optics
Hakon J. D. Johnsen, Juan C. Minano
Summary: Conventional line-focus solar concentrators are limited by the 2D concentration limit. By breaking the symmetry of these systems, it is possible to go beyond the 2D limit and achieve higher concentration ratios. 'Etendue rotation is one way to break this symmetry, and two new concentrator configurations are presented based on this insight.
NONIMAGING OPTICS: EFFICIENT DESIGN FOR ILLUMINATION AND SOLAR CONCENTRATION XVIII
(2022)
Proceedings Paper
Optics
Ruben Mohedano, P. Benitez, D. Grabovickic, P. Zamora, M. Nikolic, M. Buljan, J. C. Minano, E. Sanchez, J. Chaves, J. Lopez, E. Perez, J. Vilaplana, J. C. Gonzalez
Summary: This article introduces an optic called CLOVER that addresses the TTL issue in traditional VR headsets, reducing size by half while increasing FOV and angular resolution. It also shows recent advancements in upgraded versions of the optic that incorporate myopia and color correction to improve image quality and resolution and reduce the size of the precursor.
INTERNATIONAL OPTICAL DESIGN CONFERENCE 2021
(2021)
Proceedings Paper
Computer Science, Artificial Intelligence
R. Mohedano, P. Benitez, M. Nikolic, J. Chaves, J. C. Minano, D. Grabovickic, M. Buljan, P. Zamora
AI AND OPTICAL DATA SCIENCES
(2020)
Proceedings Paper
Optics
Marina Buljan, Bharathwaj Narasimhan, Pablo Benitez, Juan Carlos Minano, Jesus Lopez, Dejan Grabovickic, Milena Nikolic, Eduardo Perez, Jorge Gorospe, Eduardo Sanchez, Juan Carlos Gonzalez, Pablo Zamora, Ruben Mohedano
DIGITAL OPTICS FOR IMMERSIVE DISPLAYS
(2018)
Proceedings Paper
Optics
J. C. Minano, P. Benitez, D. Grabovickic, B. Narasimhan, M. Nikolic, J. Infante
INTERNATIONAL OPTICAL DESIGN CONFERENCE 2017
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
Juan C. Minano, Pablo Benitez, Dejan Grabovickic, Pablo Zamora, Marina Buljan, Bharathwaj Narasimhan
DIGITAL OPTICAL TECHNOLOGIES 2017
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
Dejan Grabovickic, Pablo Benitez, Juan C. Minano, Pablo Zamora, Marina Buljan, Bharathwaj Narasimhan, Milena I. Nikolic, Jesus Lopez, Jorge Gorospe, Eduardo Sanchez, Carmen Lastres, Ruben Mohedano
DIGITAL OPTICAL TECHNOLOGIES 2017
(2017)
Proceedings Paper
Engineering, Electrical & Electronic
Pablo Benitez, Juan C. Minano, Pablo Zamora, Dejan Grabovickic, Marina Buljan, Bharathwaj Narasimhan, Jorge Gorospe, Jesos Lopez, Milena Nikolic, Eduardo Sanchez, Carmen Lastres, Ruben Mohedano
DIGITAL OPTICAL TECHNOLOGIES 2017
(2017)
Article
Optics
Yunfeng Nie, Ruben Mohedano, Pablo Benitez, Julio Chaves, Juan C. Minano, Hugo Thienpont, Fabian Duerr
