Doping and switchable photovoltaic effect in lead-free perovskites enabled by metal cation transmutation by Harikesh, Padinhare Cholakkal, Wu, Bo, Ghosh, Biplab, John, Rohit Abraham, Lie, Stener, Thirumal, Krishnamoorthy, Wong, Lydia Helena, Sum, Tze Chien, Mhaisalkar, Subodh, Mathews, Nripan

“…Creating defect tolerant lead-free halide perovskites is the major challenge for development of high-performance photovoltaics with nontoxic absorbers. …”
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Crystal Engineering of a Two-Dimensional Lead-Free Perovskite with Functional Organic Cations by Second-Sphere Coordination by Cortecchia, Daniele, Soci, Cesare, Cametti, Massimo, Petrozza, Annamaria, Martí-Rujas, Javier

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Characterization of lead free solder joints in microelectronics assemblies by Hla Phone Maw.

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Free-standing one-dimensional plasmonic nanostructures by Jiang, Lin, Sun, Yinghui, Huo, Fengwei, Zhang, Hua, Qin, Lidong, Li, Shuzhou, Chen, Xiaodong

“…In this feature article, a category of chemically nanofabricated, unique free-standing one-dimensional (1D) plasmonic nanostructures has been summarized. …”
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Long electron-hole diffusion length in high-quality lead-free double perovskite films by Ning, Weihua, Wang, Feng, Wu, Bo, Lu, Jun, Yan, Zhibo, Liu, Xianjie, Tao, Youtian, Liu, Jun-Ming, Huang, Wei, Fahlman, Mats, Hultman, Lars, Sum, Tze Chien, Gao, Feng

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Lead-free PCB assembly and effect of solder joint profile on the reliability of PCB assembly by Periannan Arulvanan.

“…Lead-free Printed Circuit Board (PCB) assembly evaluation was undertaken to determine the effect of solder joint profile on the reliability of PCB assembly, by varying the foot print design on the PCB, solder paste deposition volume and solder reflow profile. …”
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Solar energy harvesting using lead-free pyroelectric bulk ceramics: a simulation study by Saurabh, Nishchay, Kiran, Raj, Patel, Satyanarayan

“…This work shows the potential of lead-free pyroelectric materials for solar energy harvesting with losses in the circuit.…”
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Understanding the methylammonium chloride-assisted crystallization for improved performance of lead-free tin perovskite solar cells by Cuzzupè, Daniele T., Öz, Senol Dilara, Ling, Jinkiong, Illing, Elias, Seewald, Tobias, Jose, Rajan, Olthof, Selina, Azhar, Fakharuddin, Schmidt-Mende, Lukas

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Dendrites-free lithium metal anode enabled by synergistic surface structural engineering by Di, Jie, Yang, Jin-Lin, Tian, Han, Ren, Pengfei, Deng, Yirui, Tang, Wenhao, Yan, Wenqi, Liu, Ruiping, Ma, Jianmin

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Optical properties of ultrathin metal oxide and metal films : effect of free electrons, quantum confinement and localized surface plasmon resonance by Li, Xiao Dong

“…In this thesis, a study of the effects of free electrons, quantum confinement and localized surface plasmon resonance (LSPR) on optical properties of metal oxide and metal thin films is presented. …”
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Triflimide-catalyzed allyl–allyl cross-coupling : a metal-free allylic alkylation by Ding, Feiqing, William, Ronny, Wang, Fei, Liu, Xue-Wei

“…A highly efficient metal-free intermolecular C(sp3)–C(sp3) allyl–allyl cross-coupling protocol between allyl acetates and allyltrimethylsilanes, which proceeded smoothly in the presence of catalytic triflimide to form 1,5-dienes with good to excellent regioselectivity, has been developed.…”
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Beyond perovskite solar cells: tellurium iodide as a promising light-absorbing material for solution-processed photovoltaic application by Ahmed Ali Said, Xie, Jian, Zhao, Kexiang, Liu, Wenbo, Yu, Fei, Zhang, Qichun

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Numerical modeling and simulation of shape memory allows using the mesh-free method by Ren, Ji

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Highly uniform, self-compliance, and forming-free ALD HfO2-based RRAM with Ge doping by Wu, L., Wang, Zhongrui, Zhu, W. G., Du, A. Y., Fang, Z., Tran, Xuan Anh, Liu, W. J., Zhang, K. L., Yu, Hongyu

“…The forming-free behavior originates from the oxygen deficiency due to the metal doping layer. …”
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Metal-free σ-bond metathesis in 1,3,2-diazaphospholene-catalyzed hydroboration of carbonyl compounds by Chong, Che Chang, Hirao, Hajime, Kinjo, Rei

“…The first metal-free catalytic hydroboration of carbonyl derivatives has been developed in which a catalytic amount of 1,3,2-diazaphospholene effectively promotes a hydroboration reaction of aliphatic and aromatic aldehydes and ketones. …”
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Selective and Chemical-Free Removal of Toxic Heavy Metal Cations from Water Using Shock Ion Extraction by Alkhadra, Mohammad A, Jordan, Matthew L, Tian, Huanhuan, Arges, Christopher G, Bazant, Martin Z

“…In this study, we developed a new process called shock ion extraction (shock IX) for selective and chemical-free removal of toxic heavy metals from water. Shock IX is a hybrid process that combines shock electrodialysis (shock ED) and ion exchange using an ion exchange resin wafer (IERW), and this method can be thought of functionally as an electrochemically assisted variation of traditional ion exchange. …”
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THE FOOTBALL BOOK : THE TEAMS, THE RULES, THE LEAGUES, THE TACTICS / by Goldblatt, David, author 655556, Acton, Johnny, author 655557

“…Eye-catching step-by-step artworks and jargon-free text profile the roles of players, equipment, team formations, strategies, and individual skills, while maps, quotes, and statistics give you all of the key facts on national teams, famous club sides, and iconic players, as well as the greatest competitions around the world"--…”

Examining derivatives of quinacridone, diketopyrrolopyrrole and indigo as the visible-light organic photocatalysts for metal-free atom transfer radical polymerization by Jia, Tao, Huang, Shuo, Bohra, Hassan, Wang, Mingfeng

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Metal-free access to β-carbolines via single-electron transfer catalyzed by a triaryl carbenium ion pair by Zhang, Zhenguo, Gu, Jun, Lv, Yongheng, Ji, Liang, Liu, Xiaoxiao, Wu, Beishen, Liu, Fang, Jia, Zhenhua, Loh, Teck-Peng

“…The β-carboline moiety exists in a wide range of drugs and natural products, but synthesis often relies on noble metals and stochiometric oxidants. Here, we develop a metal-free strategy using a triaryl carbenium ion pair as a catalyst to access β-carbolines from tryptamines and aromatic aldehydes. …”
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Facile access to chiral ketones through metal-free oxidative C-C bond cleavage of aldehydes by O2 by Tiwari, Bhoopendra, Zhang, Junming, Chi, Robin Yonggui

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