Results 21 to 30 of about 149,994 (262)

SOLAR ENERGY BY PHOTOSYNTHESIS

Kagaku To Seibutsu, 1974
Photosynthesis, both natural and as a model process, is examined as a possible annually renewable resource for both material and energy. The conversion of carbohydrate from cane, beets and other sources through fermentation alcohol to hydrocarbon may soon again become economic in the light of increasing costs of recovery of hydrocarbon from fossil ...
openaire   +3 more sources

Stable reverse bias or integrated bypass diode in HIP‑MWT+ solar cells

EPJ Photovoltaics, 2022
The Metal Wrap Through+ (HIP-MWT+) solar cell is based on the PERC concept but features two additional electrical contacts, namely the Schottky contact between p-type Si bulk and Ag n-contact and the metal-insulator-semiconductor (MIS) contact on the ...
Schweigstill Tadeo, Spribille Alma, Huyeng Jonas D., Clement Florian, Glunz Stefan W.   +4 more
doaj   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source

Geração solar / Solar energy

Brazilian Applied Science Review, 2018
A demanda por energia elétrica cresce em escala global, e o seu consumo cada vez maior faz com que alternativas de fontes de energia renovável estejam na vanguarda para suprir essa crescente no consumo elétrico. O presente trabalho tem como viés a análise do atual quadro panorâmico de geração de energia elétrica no Brasil, bem como o funcionamento de ...
Aquino, Paulo Sady Ayres de, Silva, João de Deus Cruz da   +1 more
openaire   +2 more sources

TOPCon Solar Cells With Al-Free Ag and Cu Metallization

SiliconPV Conference Proceedings
This work presents an approach to lower the silver consumption of screen printed TOPCon (Tunnel Oxide Passivated Contact) solar cells by reducing and partially replacing the silver by low cost copper metallization paste. On the solar cells front side an
Jan Lossen, Pirmin Preis, Mertcan Comak, Joris Libal, Dominik Rudolph , Jan Hoß, Lejo Joseph Koduvelikulathu   +6 more
doaj   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

Impact of Texture Height and Ozone-Based Rounding on Silicon Heterojunction Solar Cells Performance

SiliconPV Conference Proceedings
In this study, the effect of ozone-based rounding was investigated for three random-pyramid texture height ranges for Silicon Heterojunction (SHJ) at the cell and module levels.
Pedro Sansoldo, Sebastian Pingel, Katrin Krieg, Andreas Fischer, Ioan Voicu Vulcanean, Martin Zimmer, Anamaria Steinmetz   +6 more
doaj   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

Evaluation of Different Front Surface Passivation Schemes for p-type IBC Solar Cells

SiliconPV Conference Proceedings
In this work, we investigate different front-side passivation approaches for p-type IBC solar cells. We compare a POCl3-diffused and SiNx-passivated front floating emitter (FFE) with an undiffused front surface passivated by a layer stack of aluminum ...
Marius Meßmer, Lazhar Rachdi, Pierre Saint-Cast, Stefan Schmidt, Nico Jung, Jan Lossen, Andreas Wolf   +6 more
doaj   +1 more source

Flexible Cu2ZnSn(S,Se)4 solar cells with over 10% efficiency and methods of enlarging the cell area

Nature Communications, 2019
Flexibility and homogeneity are preferred properties for the kesterite solar modules to compete with silicon counterparts. Here, Yang et al. achieve these properties by designing a thin and multi-layered precursor structure and at the same time increase ...
Kee-Jeong Yang, Sammi Kim, Se-Yun Kim, Kwangseok Ahn, Dae-Ho Son, Seung-Hyun Kim, Sang-Ju Lee, Young-Ill Kim, Si-Nae Park, Shi-Joon Sung, Dae-Hwan Kim, Temujin Enkhbat, JunHo Kim, Chan-Wook Jeon, Jin-Kyu Kang   +14 more
doaj   +1 more source