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Institution

King Abdullah University of Science and Technology

EducationJeddah, Saudi Arabia
About: King Abdullah University of Science and Technology is a education organization based out in Jeddah, Saudi Arabia. It is known for research contribution in the topics: Membrane & Catalysis. The organization has 6221 authors who have published 22019 publications receiving 625706 citations. The organization is also known as: KAUST.
Topics: Membrane, Catalysis, Fading, Population, Combustion


Papers
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Journal ArticleDOI
TL;DR: It is proposed that the glycol side chains facilitate hydration and ion penetration, without compromising electronic mobility, and suggested that this synthetic approach can be used to guide the design of organic mixed conductors.
Abstract: Electrolyte-gated organic transistors offer low bias operation facilitated by direct contact of the transistor channel with an electrolyte. Their operation mode is generally defined by the dimensionality of charge transport, where a field-effect transistor allows for electrostatic charge accumulation at the electrolyte/semiconductor interface, whereas an organic electrochemical transistor (OECT) facilitates penetration of ions into the bulk of the channel, considered a slow process, leading to volumetric doping and electronic transport. Conducting polymer OECTs allow for fast switching and high currents through incorporation of excess, hygroscopic ionic phases, but operate in depletion mode. Here, we show that the use of glycolated side chains on a thiophene backbone can result in accumulation mode OECTs with high currents, transconductance, and sharp subthreshold switching, while maintaining fast switching speeds. Compared with alkylated analogs of the same backbone, the triethylene glycol side chains shift the mode of operation of aqueous electrolyte-gated transistors from interfacial to bulk doping/transport and show complete and reversible electrochromism and high volumetric capacitance at low operating biases. We propose that the glycol side chains facilitate hydration and ion penetration, without compromising electronic mobility, and suggest that this synthetic approach can be used to guide the design of organic mixed conductors.

326 citations

Journal ArticleDOI
TL;DR: Low-dimensional-networked (low-DN) perovskite derivatives are bulk quantum materials in which charge carriers are localized within ordered metal halide sheets, rods, or clusters that are separated by cationic lattices.
Abstract: Low-dimensional-networked (low-DN) perovskite derivatives are bulk quantum materials in which charge carriers are localized within ordered metal halide sheets, rods, or clusters that are separated by cationic lattices. After two decades of hibernation, this class of semiconductors reemerged in the past two years, largely catalyzed by the interest in alternative, more stable absorbers to CH3NH3PbI3-type perovskites in photovoltaics. Whether low-DN perovskites will surpass other photovoltaic technologies remains to be seen, but their impressively high photo- and electroluminescence yields have already set new benchmarks in light emission applications. Here we offer our perspective on the most exciting advances in materials design of low-DN perovskites for energy- and optoelectronic-related applications. The next few years will usher in an explosive growth in this tribe of quantum materials, as only a few members have been synthesized, while the potential library of compositions and structures is believed to...

326 citations

Journal ArticleDOI
TL;DR: De Wolf et al. as mentioned in this paper reviewed the fundamental physical processes governing contact formation in crystalline silicon (c-Si) and identified the role passivating contacts play in increasing c-Si solar cell efficiencies beyond the limitations imposed by heavy doping and direct metallization.
Abstract: The global photovoltaic (PV) market is dominated by crystalline silicon (c-Si) based technologies with heavily doped, directly metallized contacts. Recombination of photo-generated electrons and holes at the contact regions is increasingly constraining the power conversion efficiencies of these devices as other performance-limiting energy losses are overcome. To move forward, c-Si PV technologies must implement alternative contacting approaches. Passivating contacts, which incorporate thin films within the contact structure that simultaneously supress recombination and promote charge-carrier selectivity, are a promising next step for the mainstream c-Si PV industry. In this work, we review the fundamental physical processes governing contact formation in c-Si. In doing so we identify the role passivating contacts play in increasing c-Si solar cell efficiencies beyond the limitations imposed by heavy doping and direct metallization. Strategies towards the implementation of passivating contacts in industrial environments are discussed. The development of passivating contacts holds great potential for enhancing the power conversion efficiency of silicon photovoltaics. Here, De Wolf et al. review recent advances in material design and device architecture, and discuss technical challenges to industrial fabrication.

326 citations

Journal ArticleDOI
Monika Karmin1, Monika Karmin2, Lauri Saag2, Lauri Saag1, Mário Vicente3, Melissa A. Wilson Sayres4, Melissa A. Wilson Sayres5, Mari Järve1, Ulvi Gerst Talas2, Siiri Rootsi1, Anne-Mai Ilumäe1, Anne-Mai Ilumäe2, Reedik Mägi2, Mario Mitt2, Luca Pagani3, Tarmo Puurand2, Zuzana Faltyskova3, Florian Clemente3, Alexia Cardona3, Ene Metspalu1, Ene Metspalu2, Hovhannes Sahakyan1, Hovhannes Sahakyan6, Bayazit Yunusbayev7, Bayazit Yunusbayev1, Georgi Hudjashov8, Georgi Hudjashov1, Michael DeGiorgio9, Eva Liis Loogväli1, Christina A. Eichstaedt3, Mikk Eelmets1, Mikk Eelmets2, Gyaneshwer Chaubey1, Kristiina Tambets1, S. S. Litvinov1, S. S. Litvinov7, Maru Mormina10, Yali Xue11, Qasim Ayub11, Grigor Zoraqi, Thorfinn Sand Korneliussen5, Thorfinn Sand Korneliussen12, Farida Akhatova13, Farida Akhatova14, Joseph Lachance15, Joseph Lachance16, Sarah A. Tishkoff15, Kuvat T. Momynaliev, François-Xavier Ricaut17, Pradiptajati Kusuma17, Pradiptajati Kusuma18, Harilanto Razafindrazaka17, Denis Pierron17, Murray P. Cox19, Gazi Nurun Nahar Sultana20, Rane Willerslev21, Craig Muller12, Michael C. Westaway22, David M. Lambert22, Vedrana Škaro23, Lejla Kovacevic, Shahlo Turdikulova24, Dilbar Dalimova24, Rita Khusainova14, Rita Khusainova7, N. N. Trofimova7, N. N. Trofimova1, V. L. Akhmetova7, I. M. Khidiyatova7, I. M. Khidiyatova14, Daria V. Lichman, Jainagul Isakova, Elvira Pocheshkhova25, Zhaxylyk Sabitov26, Zhaxylyk Sabitov27, Nikolay A. Barashkov28, Pagbajabyn Nymadawa29, Evelin Mihailov2, Joseph Wee Tien Seng, Irina Evseeva30, Andrea Bamberg Migliano31, S M Abdullah, George Andriadze32, Dragan Primorac, L. A. Atramentova33, Olga Utevska33, Levon Yepiskoposyan6, Damir Marjanović34, Alena Kushniarevich35, Alena Kushniarevich1, Doron M. Behar1, Christian Gilissen36, Lisenka E.L.M. Vissers36, Joris A. Veltman36, Elena Balanovska7, Miroslava Derenko7, Boris Malyarchuk7, Andres Metspalu2, Sardana A. Fedorova28, Anders Eriksson37, Anders Eriksson3, Andrea Manica3, Fernando L. Mendez38, Tatiana M. Karafet39, Krishna R. Veeramah40, Neil Bradman, Michael F. Hammer39, Ludmila P. Osipova, Oleg Balanovsky7, Elza Khusnutdinova7, Elza Khusnutdinova14, Knut Johnsen41, Maido Remm2, Mark G. Thomas31, Chris Tyler-Smith11, Peter A. Underhill38, Eske Willerslev12, Rasmus Nielsen5, Mait Metspalu1, Mait Metspalu2, Richard Villems1, Richard Villems42, Richard Villems2, Toomas Kivisild1, Toomas Kivisild3 
TL;DR: A study of 456 geographically diverse high-coverage Y chromosome sequences, including 299 newly reported samples, infer a second strong bottleneck in Y-chromosome lineages dating to the last 10 ky, and hypothesize that this bottleneck is caused by cultural changes affecting variance of reproductive success among males.
Abstract: It is commonly thought that human genetic diversity in non-African populations was shaped primarily by an out-of-Africa dispersal 50-100 thousand yr ago (kya). Here, we present a study of 456 geographically diverse high-coverage Y chromosome sequences, including 299 newly reported samples. Applying ancient DNA calibration, we date the Y-chromosomal most recent common ancestor (MRCA) in Africa at 254 (95% CI 192-307) kya and detect a cluster of major non-African founder haplogroups in a narrow time interval at 47-52 kya, consistent with a rapid initial colonization model of Eurasia and Oceania after the out-of-Africa bottleneck. In contrast to demographic reconstructions based on mtDNA, we infer a second strong bottleneck in Y-chromosome lineages dating to the last 10 ky. We hypothesize that this bottleneck is caused by cultural changes affecting variance of reproductive success among males.

325 citations


Authors

Showing all 6430 results

NameH-indexPapersCitations
Jian-Kang Zhu161550105551
Jean M. J. Fréchet15472690295
Kevin Murphy146728120475
Jean-Luc Brédas134102685803
Carlos M. Duarte132117386672
Kazunari Domen13090877964
Jian Zhou128300791402
Tai-Shung Chung11987954067
Donal D. C. Bradley11565265837
Lain-Jong Li11362758035
Hong Wang110163351811
Peng Wang108167254529
Juan Bisquert10745046267
Jian Zhang107306469715
Karl Leo10483242575
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023141
2022371
20212,836
20202,809
20192,544
20182,251