1,720,956 research outputs found
Novel Materials for Semi-Transparent Organic Solar Cells
No full textThe rapid development of photovoltaic technology has driven the search for novel materials that can improve the cost-effectiveness and efficiency of solar cells. Organic semiconductors offer unique optical tunability and transparency, allowing customization for the absorption of specific optical spectra like near-infrared radiation. Through the molecular engineering of electron donors and acceptors, these materials can be optimized for targeted optical selectivity. This adaptability enables the development of efficient energy-harvesting devices tailored for specific spectral regions. Consequently, organic semiconductors present a promising avenue for specialized applications such as semi-transparent organic solar cells. This review offers a detailed summary of the latest developments in novel organic semiconductor materials, focusing on design principles and synthesis of materials in the context of semi-transparent organic solar cells. Optimization of molecular architecture, photovoltaic performance, and the optoelectronic properties of these materials has been explored, highlighting their potential for next-generation solar energy conversion
Advanced Materials for Solar Cell Technology and Energy Simulation
No full textAs global climate change intensifies, a pivotal shift towards renewable energy sources becomes imperative. Given its adaptability and efficacy, solar cell technology stands out as a frontrunner in the quest to combat environmental degradation. With the vast expanse of buildings occupying significant portions of the urban landscape, integrating photovoltaics into building design is a timely necessity. Before embarking on tangible installations, conducting an energy simulation proves invaluable in gauging a building's energy requirements, ensuring cost and time efficiency. This paper delves into the advanced materials employed in solar cell technology and undertakes an energy simulation for a photovoltaic module. Building-Integrated Photovoltaics is not just an innovative leap in harnessing solar energy but also symbolizes the synergy between architectural design and energy production. By fine-tuning system operations and comprehending external factors, Building-Integrated Photovoltaics points to a future where energy solutions are both sustainable and tailored to a wide range of applications
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
A REVIEW OF THE ADVANCEMENTS OF ORGANIC SOLAR CELL TECHNOLOGY AND ITS INTEGRATION INTO PHOTOVOLTAIC APPLICATIONS
No full textOrganic solar cells provide benefits like transparent, cost-effective processing, and customizable light absorption properties. This review discusses challenges and recent strategies to improve the Power conversion efficiency of organic solar cells, such as bandgap tuning, molecular orbital alignment, active layer morphologies engineering, electron-donating and withdrawing group incorporation, side chain length engineering, the third additive insertion, and controlling of solubility of materials. The good transparency of organic solar cells makes them ideal for Greenhouse Integrated photovoltaic applications, which has been evaluated in this review. Explored strategies significantly impact performance parameters, such as optoelectronic properties, absorption spectrum, open circuit voltage, exciton dissociation, charge transport, molecular packing, solubility, phase separation, crystallinity, and nanoscale morphology, and device stability. An optimized organic solar cell is beneficial for specific applications. As the Near Infrared portion of the solar spectrum offers significant potential for maximizing the performance of organic solar cells, future research should focus on developing stable Near Infrared active materials. This advancement will enhance the efficiency of organic solar cells. While organic solar cells have achieved notable power conversion efficiency, long-term stability remains a significant challenge. When integrating organic solar cells with greenhouses, they must withstand harsh environmental conditions often found at agricultural sites, such as high temperatures, humidity, air, dust, and light. Ensuring stability under these conditions is crucial for the market penetration and widespread adoption of this technology
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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