Results 281 to 290 of about 14,415,700 (341)

Organic‐Free and Lead‐Free Perovskite Solar Cells with Efficiency over 11%

Advanced Energy Materials, 2022
Organic‐free and lead‐free CsSnI3 perovskite solar cells (PSCs) have recently gained growing attention as a promising template to mitigate the thermal instability and lead toxicity of hybrid lead‐based PSCs.
Weihai Zhang, Yating Cai, Heng Liu, Yusong Xia, Jieshun Cui, Yueqing Shi, Rui Chen, T. Shi, Hsing‐Lin Wang   +8 more
semanticscholar   +1 more source

Lead-Free Film

Science, 2014
Chemistry![Figure][1] CREDIT: REN-GEN XIONG Ferroelectric materials have a permanent electric dipole moment that can be switched by the application of an external electric field, a property that makes them widely used in sensing, memory, and actuators.
openaire   +1 more source

Lead-free Flux Effect in Lead-free Solder Joint Improvement

2006 Thirty-First IEEE/CPMT International Electronics Manufacturing Technology Symposium, 2006
Lead-free flux used in lead-free solder ball attachment process has been found to play a vital role in improving lead-free solder joint robustness & performance. In this study, two water soluble lead-free solder ball attach fluxes, flux A & flux B, each from different supplier, were compared in terms of the following characteristics: time variation of ...
Eu Poh Leng, Min Ding, Ibrahim Ahmad, Hoh Huey Jiun, Kamarudin Hazlinda   +4 more
openaire   +1 more source

Lead-free multilayer piezoelectric transformer

Review of Scientific Instruments, 2007
In this article, a multilayer piezoelectric transformer based on lead-free Mn-doped 0.94(Bi1∕2Na1∕2)TiO3–0.06BaTiO3 ceramics is presented. This piezoelectric transformer, with a multilayered construction in the thickness direction, is 8.3mm long, 8.3mm wide, and 2.3mm thick. It operates in the second thickness extensional vibration mode.
Guo, M, Jiang, XP, Lam, KH, Wang, S, Sun, C, Chan, HLW, Zhao, X   +6 more
openaire   +3 more sources

Recent development in lead-free perovskite piezoelectric bulk materials

Progress in Materials Science, 2018
The elimination of lead in piezoelectric applications remains challenging. Since the advances in the piezoelectricity were found in the perovskite family in 2000, studies into lead-free piezoelectric materials have grown exponentially in the fields of ...
Ting Zheng, Jiagang Wu, D. Xiao, Jianguo Zhu   +3 more
semanticscholar   +1 more source

Interfacial Reaction of Lead-Free Solders with Lead-Free Finished Leadframes

2006 International Conference on Electronic Materials and Packaging, 2006
Due to the implementation of the legislations to restrict the use of environmental unfriendly materials, the use of lead (Pb) in electronic products is banned. This includes the use of surface finishing materials such as that for integrated circuit (IC) leadframes.
Y. W. Wong, C. M. L. Wu, H. C. B. Woo, Y. T. Choi, K. L. Li   +4 more
openaire   +1 more source

Near-infrared photon upconversion and solar synthesis using lead-free nanocrystals

Nature Photonics, 2023
Wenfei Liang, Chengming Nie, Jun Du, Yaoyao Han, Guohui Zhao, Fan Yang, Guijie Liang, Kaifeng Wu   +7 more
semanticscholar   +1 more source

Epoxy lead cones for free supported leads

IEEE Transactions on Appiled Superconductivity, 2000
The support of lead wires at the lead exits of epoxy impregnated coils can be an important aspect of the coil design. This is especially true for coils fabricated of the brittle high field superconductors including both the metallic and the oxide superconductors.
W.D. Markiewicz, I.R. Dixon, W.S. Marshall, R.P. Walsh   +3 more
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Free to lead, free to care.

Nursing standard (Royal College of Nursing (Great Britain) : 1987), 2012
Supporting ward managers not only improves patient outcomes, but saves the NHS money too. Some trusts are achieving good results by giving ward managers supervisory status, training and greater authority. And for this the Royal College of Physicians recommends a salary of 75,000 sterling pounds.
openaire   +3 more sources

Lead-Free Piezoelectrics

2012
1. Domain Engineering and Phase Transformations.- 2. Ferroelectric Domains and Grain Engineering in SrBi2Ta2O9.- 3. Development of KNN-based Piezoelectric Ceramics.- 4. Low temperature Sintering of the Alkali-Niobate Ceramics.- 5. Lead-Free KNN-Based Piezoelectric Materials.- 6. Alkali niobate piezoelectric ceramics.- 7.
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