Results 41 to 50 of about 1,986 (212)

Mechanical integrity of photovoltaic panels under hailstorms: Mono vs. poly-crystalline comparison

Heliyon
The performance of Photovoltaic (PV) modules heavily relies on their structural strength, manufacturing methods, and materials. Damage induced during their lifecycle leads to degradation, reduced power generation and efficiency.
Hafiz Basit Ali, Muhammad Ali Kamran, Rizwan Mahmood Gul, Muhammad Yasir, Fadhel T. Alabdullah, Chaudhry Usman, Adnan Tariq   +6 more
doaj   +1 more source

Photoluminescence of the integrating sphere walls, its influence on the absolute quantum yield measurements and correction methods

AIP Advances, 2018
Determination of the absolute quantum yield (QY) of photoluminescence (PL) or electroluminescence is commonly performed using an integrating sphere (IS) – versatile device for radiometry applications.
Jan Valenta
doaj   +1 more source

Modifying Electrochemical Doping in Light‐Emitting Electrochemical Cells With Gold Nanoparticles

Advanced Science, EarlyView.
This study shows that gold nanoparticles placed at an electrode can control how electrochemical doping occurs in organic electronic devices. Particularly, in light‐emitting electrochemical cells, by shifting the light‐emitting region, device efficiency is improved without altering the emissive material. This approach provides a simple and effective way
Ajay K. Poonia, Anton Kirch, Joan Ràfols‐Ribé, Lucrezia Catanzaro, Anish Rao, Karol Kołątaj, Vittorio Scardaci, Giuseppe Compagnini, Guillermo P. Acuna, Ludvig Edman, Nicolò Maccaferri   +10 more
wiley   +1 more source

Beyond the Debye Temperature: A Unified Microscopic Framework for Designing Thermally Stable Red‐Emitting Phosphors

Advanced Science, EarlyView.
Local symmetry engineering in noncentrosymmetric Na3EuGe3O9 generates enhanced Eu3+ local dipoles, enabling efficient light–matter interactions, high quantum efficiency, and exceptional thermal stability. A unified microscopic framework reveals the cooperative suppression of multiple thermal‐quenching pathways, resulting in robust red emission in high ...
Noolu. Srinivasa Manikanta Viswanath, Jeong Hui Kim, Yeongjun Yoon, Sung Woo Jang, Sanjith Unithrattil, San Ha Choi, Kyeounghak Kim, Won Bin Im   +7 more
wiley   +1 more source

Low‐Dimensional Metal Halide‐Organic Interdigitated p/n Heterojunction Solar Cells Enabled by Thiomorpholine Hydroiodide Additive

Advanced Electronic Materials, EarlyView.
Thiomorpholine hydroiodide has been developed for regulating crystallization kinetics and passivating defects of two‐dimensional metal halides, enabling the low‐dimensional metal halide‐organic interdigitated p/n heterojunction solar cells to exhibit an efficiency of 24.27% with excellent stability. ABSTRACT Low‐dimensional metal halides are attractive
Jiahao Zhang, Ben Fan, Qi Wang, Xiaopeng Xu, Yihui Wu, Qiang Peng   +5 more
wiley   +1 more source

Hybrid Two‐Step Inkjet Printing and Dip‐Coating Enable Scalable 30%‐Efficient Perovskite/Silicon Tandem Solar Cells

Advanced Energy Materials, EarlyView.
Adopting a scalable hybrid two‐step deposition process route, textured perovskite/silicon tandem solar cells achieve over 30% power‐conversion efficiency. The process route replaces all non‐scalable spin‐coating steps, including organic precursor deposition, self‐assembled monolayer formation, and passivation layer deposition, with scalable techniques ...
Raphael Pesch, Lena P. Rothbauer, Johannes Schenk, Lingyi Fang, Theresa Kuechle, Julian Petry, Uma K. Dangudubiyyam, Richard Thelen, David B. Ritzer, Ting Pan, Daniel O. Baumann, Mohammad Gholipoor, Tonghan Zhao, Nils W. Rosemann, Jinzhao Li, Ulrich Lemmer, Ulrich W. Paetzold   +16 more
wiley   +1 more source

Thermoradiative Diodes Using Black Phosphorus van der Waals Materials

Advanced Energy Materials, EarlyView.
We demonstrate thermoradiative diodes based on black phosphorus (bP${\rm bP}$)/molybdenum disulfide (MoS2$MoS_2$) van der Waals heterojunctions which generate power by exchanging photons with a colder environment. The bandgap of black phosphorus is well positioned to exchange photons with outer space through the mid‐wave atmospheric window.
Yuchen Sun, Jamie A. Harrison, Yiyang Cui, Yumin Li, Shifan Wang, Varsha Ashwin Vedaraj, Luke Philpott, Shi Tang, Alexander Corletto, Sivacarendran Balendhran, Nicholas J. Ekins‐Daukes, Kenneth B. Crozier, Michael P. Nielsen, James Bullock   +13 more
wiley   +1 more source

Nickel‐Free Perovskite Solar Cells Enabled by Self‐Assembled Monolayers: A Pathway to Efficient and Recyclable Devices

Advanced Energy Materials, EarlyView.
Replacing toxic NiOx with phenyl‐substituted phosphonic‐acid carbazole monolayers (Ph‐5PACz) yields inverted perovskite solar cells that are efficient and recyclable. The nickel‐free interface reaches 25.3% efficiency and enables closed‐loop ITO recovery with near‐98% performance retention, while life‐cycle and techno‐economic analyses confirm lower ...
Yanxue Wang, Roman Kučera, Sinuhé Perea‐Puente, Mykhailo Sytnyk, Andrew Hainer, Zijian Peng, Savannah Bennett, Juan S. Rocha‐Ortiz, Albert These, Hakan U Dag, Qi Fan, Anastasia Barabash, Zhenni Wu, Chaohui Li, Jens Hauch, Olga Kasian, Christoph J. Brabec, Ian Marius Peters   +17 more
wiley   +1 more source

Electrical Properties and Reliability of AlGaN/GaN High Electron Mobility Transistor under RF Overdrive Stress at High Temperature

Micromachines
We have investigated the electrical properties and reliability of AlGaN/GaN high electron mobility transistors (HEMT) under high-temperature RF overdrive stress.
Chang Liu, Yiqiang Chen, Yuhan Xie, Hongxia Liu, Zongqi Cai   +4 more
doaj   +1 more source

Electrical inspection mark of UHV transmission line based on GaN material

工程科学学报, 2018
At present, the traditional insulated pole electroscope is used for electrical inspection in high-voltage transmission lines. However, when it is used in ultra-high voltage (UHV) transmission lines, the length of its insulated rod is large, and there are
CHEN Kang, WANG Li-nong, LI En-wen, SONG Bin, FANG Ya-qi, LI Xiao-chun, CHEN Tian-zhu, JIAN Si-liang   +7 more
doaj   +1 more source