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Richard Axel

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https://www.readbyqxmd.com/read/28291247/enhancing-studies-of-the-connectome-in-autism-using-the-autism-brain-imaging-data-exchange-ii
#1
Adriana Di Martino, David O'Connor, Bosi Chen, Kaat Alaerts, Jeffrey S Anderson, Michal Assaf, Joshua H Balsters, Leslie Baxter, Anita Beggiato, Sylvie Bernaerts, Laura M E Blanken, Susan Y Bookheimer, B Blair Braden, Lisa Byrge, F Xavier Castellanos, Mirella Dapretto, Richard Delorme, Damien A Fair, Inna Fishman, Jacqueline Fitzgerald, Louise Gallagher, R Joanne Jao Keehn, Daniel P Kennedy, Janet E Lainhart, Beatriz Luna, Stewart H Mostofsky, Ralph-Axel Müller, Mary Beth Nebel, Joel T Nigg, Kirsten O'Hearn, Marjorie Solomon, Roberto Toro, Chandan J Vaidya, Nicole Wenderoth, Tonya White, R Cameron Craddock, Catherine Lord, Bennett Leventhal, Michael P Milham
The second iteration of the Autism Brain Imaging Data Exchange (ABIDE II) aims to enhance the scope of brain connectomics research in Autism Spectrum Disorder (ASD). Consistent with the initial ABIDE effort (ABIDE I), that released 1112 datasets in 2012, this new multisite open-data resource is an aggregate of resting state functional magnetic resonance imaging (MRI) and corresponding structural MRI and phenotypic datasets. ABIDE II includes datasets from an additional 487 individuals with ASD and 557 controls previously collected across 16 international institutions...
March 14, 2017: Scientific Data
https://www.readbyqxmd.com/read/28272467/meta-analysis-identifies-novel-risk-loci-and-yields-systematic-insights-into-the-biology-of-male-pattern-baldness
#2
Stefanie Heilmann-Heimbach, Christine Herold, Lara M Hochfeld, Axel M Hillmer, Dale R Nyholt, Julian Hecker, Asif Javed, Elaine G Y Chew, Sonali Pechlivanis, Dmitriy Drichel, Xiu Ting Heng, Ricardo C-H Del Rosario, Heide L Fier, Ralf Paus, Rico Rueedi, Tessel E Galesloot, Susanne Moebus, Thomas Anhalt, Shyam Prabhakar, Rui Li, Stavroula Kanoni, George Papanikolaou, Zoltán Kutalik, Panos Deloukas, Michael P Philpott, Gérard Waeber, Tim D Spector, Peter Vollenweider, Lambertus A L M Kiemeney, George Dedoussis, J Brent Richards, Michael Nothnagel, Nicholas G Martin, Tim Becker, David A Hinds, Markus M Nöthen
Male-pattern baldness (MPB) is a common and highly heritable trait characterized by androgen-dependent, progressive hair loss from the scalp. Here, we carry out the largest GWAS meta-analysis of MPB to date, comprising 10,846 early-onset cases and 11,672 controls from eight independent cohorts. We identify 63 MPB-associated loci (P<5 × 10(-8), METAL) of which 23 have not been reported previously. The 63 loci explain ∼39% of the phenotypic variance in MPB and highlight several plausible candidate genes (FGF5, IRF4, DKK2) and pathways (melatonin signalling, adipogenesis) that are likely to be implicated in the key-pathophysiological features of MPB and may represent promising targets for the development of novel therapeutic options...
March 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28215558/optimal-degrees-of-synaptic-connectivity
#3
Ashok Litwin-Kumar, Kameron Decker Harris, Richard Axel, Haim Sompolinsky, L F Abbott
Synaptic connectivity varies widely across neuronal types. Cerebellar granule cells receive five orders of magnitude fewer inputs than the Purkinje cells they innervate, and cerebellum-like circuits, including the insect mushroom body, also exhibit large divergences in connectivity. In contrast, the number of inputs per neuron in cerebral cortex is more uniform and large. We investigate how the dimension of a representation formed by a population of neurons depends on how many inputs each neuron receives and what this implies for learning associations...
February 16, 2017: Neuron
https://www.readbyqxmd.com/read/28196534/comparative-genomics-reveals-high-biological-diversity-and-specific-adaptations-in-the-industrially-and-medically-important-fungal-genus-aspergillus
#4
Ronald P de Vries, Robert Riley, Ad Wiebenga, Guillermo Aguilar-Osorio, Sotiris Amillis, Cristiane Akemi Uchima, Gregor Anderluh, Mojtaba Asadollahi, Marion Askin, Kerrie Barry, Evy Battaglia, Özgür Bayram, Tiziano Benocci, Susanna A Braus-Stromeyer, Camila Caldana, David Cánovas, Gustavo C Cerqueira, Fusheng Chen, Wanping Chen, Cindy Choi, Alicia Clum, Renato Augusto Corrêa Dos Santos, André Ricardo de Lima Damásio, George Diallinas, Tamás Emri, Erzsébet Fekete, Michel Flipphi, Susanne Freyberg, Antonia Gallo, Christos Gournas, Rob Habgood, Matthieu Hainaut, María Laura Harispe, Bernard Henrissat, Kristiina S Hildén, Ryan Hope, Abeer Hossain, Eugenia Karabika, Levente Karaffa, Zsolt Karányi, Nada Kraševec, Alan Kuo, Harald Kusch, Kurt LaButti, Ellen L Lagendijk, Alla Lapidus, Anthony Levasseur, Erika Lindquist, Anna Lipzen, Antonio F Logrieco, Andrew MacCabe, Miia R Mäkelä, Iran Malavazi, Petter Melin, Vera Meyer, Natalia Mielnichuk, Márton Miskei, Ákos P Molnár, Giuseppina Mulé, Chew Yee Ngan, Margarita Orejas, Erzsébet Orosz, Jean Paul Ouedraogo, Karin M Overkamp, Hee-Soo Park, Giancarlo Perrone, Francois Piumi, Peter J Punt, Arthur F J Ram, Ana Ramón, Stefan Rauscher, Eric Record, Diego Mauricio Riaño-Pachón, Vincent Robert, Julian Röhrig, Roberto Ruller, Asaf Salamov, Nadhira S Salih, Rob A Samson, Erzsébet Sándor, Manuel Sanguinetti, Tabea Schütze, Kristina Sepčić, Ekaterina Shelest, Gavin Sherlock, Vicky Sophianopoulou, Fabio M Squina, Hui Sun, Antonia Susca, Richard B Todd, Adrian Tsang, Shiela E Unkles, Nathalie van de Wiele, Diana van Rossen-Uffink, Juliana Velasco de Castro Oliveira, Tammi C Vesth, Jaap Visser, Jae-Hyuk Yu, Miaomiao Zhou, Mikael R Andersen, David B Archer, Scott E Baker, Isabelle Benoit, Axel A Brakhage, Gerhard H Braus, Reinhard Fischer, Jens C Frisvad, Gustavo H Goldman, Jos Houbraken, Berl Oakley, István Pócsi, Claudio Scazzocchio, Bernhard Seiboth, Patricia A vanKuyk, Jennifer Wortman, Paul S Dyer, Igor V Grigoriev
BACKGROUND: The fungal genus Aspergillus is of critical importance to humankind. Species include those with industrial applications, important pathogens of humans, animals and crops, a source of potent carcinogenic contaminants of food, and an important genetic model. The genome sequences of eight aspergilli have already been explored to investigate aspects of fungal biology, raising questions about evolution and specialization within this genus. RESULTS: We have generated genome sequences for ten novel, highly diverse Aspergillus species and compared these in detail to sister and more distant genera...
February 14, 2017: Genome Biology
https://www.readbyqxmd.com/read/28194306/a-randomized-exploratory-phase-2-study-in-patients-with-chemotherapy-related-peripheral-neuropathy-evaluating-whole-body-vibration-training-as-adjunct-to-an-integrated-program-including-massage-passive-mobilization-and-physical-exercises
#5
Stefan S Schönsteiner, Heidi Bauder Mißbach, Axel Benner, Silja Mack, Thomas Hamel, Michael Orth, Bernhard Landwehrmeyer, Sigurd D Süßmuth, Carolin Geitner, Regine Mayer-Steinacker, Anneliese Riester, Andrea Prokein, Elfriede Erhardt, Jelena Kunecki, Anna M Eisenschink, Rainer Rawer, Hartmut Döhner, Elisabeth Kirchner, Richard F Schlenk
BACKGROUND: Chemotherapy-induced polyneuropathy (CIPN) is a common toxicity after chemotherapy, immunomodulatory drugs or proteasome inhibitors, which is difficult to treat and may also have impact on quality of life. The objective of the study was to evaluate whole-body vibration (WBV) on the background of an integrated program (IP) including massage, passive mobilization and physical exercises on CIPN. PATIENTS AND METHODS: In an exploratory phase-2 study patients with CIPN (NCI CTC grade 2/3) were randomized for WBV plus IP (experimental) to IP alone (standard)...
2017: Experimental Hematology & Oncology
https://www.readbyqxmd.com/read/28159742/csf-1-induced-src-signaling-can-instruct-monocytic-lineage-choice
#6
Max Endele, Dirk Loeffler, Konstantinos D Kokkaliaris, Oliver Hilsenbeck, Stavroula Skylaki, Philipp S Hoppe, Axel Schambach, E Richard Stanley, Timm Schroeder
Controlled regulation of lineage decisions is imperative for hematopoiesis. Yet, the molecular mechanisms underlying hematopoietic lineage choices are poorly defined. CSF-1, the cytokine acting as the principal regulator of monocyte/macrophage development, has been shown to be able to instruct the lineage choice of uncommitted granulocyte macrophage progenitors towards a monocyte/macrophage fate. However, the intracellular signaling pathways involved are unknown. CSF-1 activates a multitude of signaling pathways resulting in a pleiotropic cellular response...
February 3, 2017: Blood
https://www.readbyqxmd.com/read/28123015/sure-i-m-sure-prefrontal-oscillations-support-metacognitive-monitoring-of-decision-making
#7
Martijn E Wokke, Axel Cleeremans, K Richard Ridderinkhof
Successful decision making critically involves metacognitive processes such as monitoring and control of our decision process. Metacognition enables agents to modify ongoing behavior adaptively and determine what to do next in situations in which external feedback is not (immediately) available. Despite the importance of metacognition for many aspects of life, little is known about how our metacognitive system operates or about what kind of information is used for metacognitive (second-order) judgments. In particular, it remains an open question whether metacognitive judgments are based on the same information as first-order decisions...
January 25, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28094794/diversity-and-carbon-storage-across-the-tropical-forest-biome
#8
Martin J P Sullivan, Joey Talbot, Simon L Lewis, Oliver L Phillips, Lan Qie, Serge K Begne, Jerôme Chave, Aida Cuni-Sanchez, Wannes Hubau, Gabriela Lopez-Gonzalez, Lera Miles, Abel Monteagudo-Mendoza, Bonaventure Sonké, Terry Sunderland, Hans Ter Steege, Lee J T White, Kofi Affum-Baffoe, Shin-Ichiro Aiba, Everton Cristo de Almeida, Edmar Almeida de Oliveira, Patricia Alvarez-Loayza, Esteban Álvarez Dávila, Ana Andrade, Luiz E O C Aragão, Peter Ashton, Gerardo A Aymard C, Timothy R Baker, Michael Balinga, Lindsay F Banin, Christopher Baraloto, Jean-Francois Bastin, Nicholas Berry, Jan Bogaert, Damien Bonal, Frans Bongers, Roel Brienen, José Luís C Camargo, Carlos Cerón, Victor Chama Moscoso, Eric Chezeaux, Connie J Clark, Álvaro Cogollo Pacheco, James A Comiskey, Fernando Cornejo Valverde, Eurídice N Honorio Coronado, Greta Dargie, Stuart J Davies, Charles De Canniere, Marie Noel Djuikouo K, Jean-Louis Doucet, Terry L Erwin, Javier Silva Espejo, Corneille E N Ewango, Sophie Fauset, Ted R Feldpausch, Rafael Herrera, Martin Gilpin, Emanuel Gloor, Jefferson S Hall, David J Harris, Terese B Hart, Kuswata Kartawinata, Lip Khoon Kho, Kanehiro Kitayama, Susan G W Laurance, William F Laurance, Miguel E Leal, Thomas Lovejoy, Jon C Lovett, Faustin Mpanya Lukasu, Jean-Remy Makana, Yadvinder Malhi, Leandro Maracahipes, Beatriz S Marimon, Ben Hur Marimon Junior, Andrew R Marshall, Paulo S Morandi, John Tshibamba Mukendi, Jaques Mukinzi, Reuben Nilus, Percy Núñez Vargas, Nadir C Pallqui Camacho, Guido Pardo, Marielos Peña-Claros, Pascal Pétronelli, Georgia C Pickavance, Axel Dalberg Poulsen, John R Poulsen, Richard B Primack, Hari Priyadi, Carlos A Quesada, Jan Reitsma, Maxime Réjou-Méchain, Zorayda Restrepo, Ervan Rutishauser, Kamariah Abu Salim, Rafael P Salomão, Ismayadi Samsoedin, Douglas Sheil, Rodrigo Sierra, Marcos Silveira, J W Ferry Slik, Lisa Steel, Hermann Taedoumg, Sylvester Tan, John W Terborgh, Sean C Thomas, Marisol Toledo, Peter M Umunay, Luis Valenzuela Gamarra, Ima Célia Guimarães Vieira, Vincent A Vos, Ophelia Wang, Simon Willcock, Lise Zemagho
Tropical forests are global centres of biodiversity and carbon storage. Many tropical countries aspire to protect forest to fulfil biodiversity and climate mitigation policy targets, but the conservation strategies needed to achieve these two functions depend critically on the tropical forest tree diversity-carbon storage relationship. Assessing this relationship is challenging due to the scarcity of inventories where carbon stocks in aboveground biomass and species identifications have been simultaneously and robustly quantified...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28093045/exploring-urban-health-in-cape-town-south-africa-an-interdisciplinary-analysis-of-secondary-data
#9
Rebekka Mumm, Sonia Diaz-Monsalve, Eva Hänselmann, Johanna Freund, Michael Wirsching, Jan Gärtner, Richard Gminski, Katrin Vögtlin, Mirjam Körner, Lena Zirn, Ursula Wittwer-Backofen, Tolu Oni, Axel Kroeger
BACKGROUND: With modern information technology, an overwhelming amount of data is available on different aspects of societies. Our research investigated the feasibility of using secondary data sources to get an overview of determinants of health and health outcomes in different population strata of Cape Town, a large city of South Africa. METHODS: The methodological approach of secondary-data analysis was similar in the different disciplines: Biological Anthropology, Public Health, Environmental Health, Mental Health, Palliative Care, Medical Psychology and Sociology at the University of Freiburg and Public Health at the University of Cape Town...
February 2017: Pathogens and Global Health
https://www.readbyqxmd.com/read/28077774/tropical-ancient-dna-reveals-relationships-of-the-extinct-bahamian-giant-tortoise-chelonoidis-alburyorum
#10
Christian Kehlmaier, Axel Barlow, Alexander K Hastings, Melita Vamberger, Johanna L A Paijmans, David W Steadman, Nancy A Albury, Richard Franz, Michael Hofreiter, Uwe Fritz
Ancient DNA of extinct species from the Pleistocene and Holocene has provided valuable evolutionary insights. However, these are largely restricted to mammals and high latitudes because DNA preservation in warm climates is typically poor. In the tropics and subtropics, non-avian reptiles constitute a significant part of the fauna and little is known about the genetics of the many extinct reptiles from tropical islands. We have reconstructed the near-complete mitochondrial genome of an extinct giant tortoise from the Bahamas (Chelonoidis alburyorum) using an approximately 1 000-year-old humerus from a water-filled sinkhole (blue hole) on Great Abaco Island...
January 11, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28068728/-a-rare-case-of-coecal-volvulus-after-colonoskopy-due-to-a%C3%A2-mobile-coekum-diagnosis-surgical-therapy-and-postoperative-complications
#11
Christian Beltzer, Axel Geiger, Roland Schmidt, Burkhardt Danz, Amrei Maier, Richard Karpa, Nektarios Dikopoulos
Colonoscopy, either performed as screening or as a therapeutic proceedure, is, in general, very safe with only a few cases of serious complications. Most cases of bleeding after endoscopic polypectomy can be safely managed endoscopically. The rare cases of colonic perforations still have to be managed by surgical intervention. The postpolypectomy-coagulation syndrome and a cecal volvulus are very rare complicatoions after colonoscopy. In the current manuscript, we describe a rare case of a cecal volvulus after routine colonoscopy due to an unknown mobile coecum as a predisposition...
January 9, 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/28038971/measuring-biomarkers-in-wastewater-as-a-new-source-of-epidemiological-information-current-state-and-future-perspectives
#12
REVIEW
Emma Gracia-Lor, Sara Castiglioni, Richard Bade, Frederic Been, Erika Castrignanò, Adrian Covaci, Iria González-Mariño, Evroula Hapeshi, Barbara Kasprzyk-Hordern, Juliet Kinyua, Foon Yin Lai, Thomas Letzel, Luigi Lopardo, Markus R Meyer, Jake O'Brien, Pedram Ramin, Nikolaos I Rousis, Axel Rydevik, Yeonsuk Ryu, Miguel M Santos, Ivan Senta, Nikolaos S Thomaidis, Sofia Veloutsou, Zhugen Yang, Ettore Zuccato, Lubertus Bijlsma
The information obtained from the chemical analysis of specific human excretion products (biomarkers) in urban wastewater can be used to estimate the exposure or consumption of the population under investigation to a defined substance. A proper biomarker can provide relevant information about lifestyle habits, health and wellbeing, but its selection is not an easy task as it should fulfil several specific requirements in order to be successfully employed. This paper aims to summarize the current knowledge related to the most relevant biomarkers used so far...
December 27, 2016: Environment International
https://www.readbyqxmd.com/read/27991515/a-large-ornithurine-bird-tingmiatornis-arctica-from-the-turonian-high-arctic-climatic-and-evolutionary-implications
#13
Richard K Bono, Julia Clarke, John A Tarduno, Donald Brinkman
Bird fossils from Turonian (ca. 90 Ma) sediments of Axel Heiberg Island (High Canadian Arctic) are among the earliest North American records. The morphology of a large well-preserved humerus supports identification of a new volant, possibly diving, ornithurine species (Tingmiatornis arctica). The new bird fossils are part of a freshwater vertebrate fossil assemblage that documents a period of extreme climatic warmth without seasonal ice, with minimum mean annual temperatures of 14 °C. The extreme warmth allowed species expansion and establishment of an ecosystem more easily able to support large birds, especially in fresh water bodies such as those present in the Turonian High Arctic...
December 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27983764/bendamustine-lenalidomide-and-dexamethasone-brd-has-high-activity-as-2-nd-line-therapy-for-relapsed-and-refractory-multiple-myeloma-a-phase-ii-trial
#14
Ulrich J M Mey, Wolfram Brugger, Heike Schwarb, Stefanie Pederiva, Andreas Schwarzer, Tobias Dechow, Paul Jehner, Jacqueline Rauh, Christian J Taverna, Mathias Schmid, Martin Schmidt-Hieber, Steffen Doerfel, Natalie Fischer, Axel Ruefer, Carsten Ziske, Wolfgang Knauf, Richard Cathomas, Roger von Moos, Felicitas Hitz, Rafael Sauter, Elke Hiendlmeyer, Nathan Cantoni, Mario Bargetzi, Christoph Driessen
The combination of lenalidomide (Revlimid(®) , R) and dexamethasone (d) is a standard regimen for patients with relapsed/refractory multiple myeloma (rrMM). With this regimen, only a small fraction of patients will achieve high quality responses [≥ very good partial response (VGPR)]. The combination of bendamustine (B), lenalidomide and dexamethasone (BRd) has shown high efficacy in patients with advanced rrMM. However, dose-limiting haematotoxicity restricted its use in extensively pre-treated patient populations...
March 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/27970387/tct-214-glp-1-cardioprotection-against-ischemic-dysfunction-in-humans-is-not-mediated-by-a-mitochondrial-k-atp-dependent-pathway-in-left-ventricular-conductance-catheter-studies
#15
Joel Giblett, Richard Axell, Paul White, Sophie Clarke, Philip Read, Liam McCormick, Adam Brown, Michael O'Sullivan, Nick West, David Dutka, Stephen Hoole
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27956487/sure-i-m-sure-prefrontal-oscillations-support-metacognitive-monitoring-of-decision-making
#16
Martijn E Wokke, Axel Cleeremans, K Richard Ridderinkhof
Successful decision-making critically involves metacognitive processes such as monitoring and control of our decision process. Metacognition enables agents to adaptively modify on-going behavior and to determine what to do next in situations where external feedback is not (immediately) available. Despite the importance of metacognition for many aspects of life, little is known about how our metacognitive system operates or about what kind of information is used for metacognitive (second-order) judgments. In particular, it remains an open question whether metacognitive judgments are based on the same information as first-order decisions...
December 12, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27916176/functional-assessment-and-transplantation-of-the-donor-heart-after-circulatory-death
#17
Simon J Messer, Richard G Axell, Simon Colah, Paul A White, Marian Ryan, Aravinda A Page, Barbora Parizkova, Kamen Valchanov, Christopher W White, Darren H Freed, Euan Ashley, John Dunning, Martin Goddard, Jayan Parameshwar, Christopher J Watson, Thomas Krieg, Ayyaz Ali, Steven Tsui, Stephen R Large
BACKGROUND: After a severe shortage of brain-dead donors, the demand for heart transplantation has never been greater. In an attempt to increase organ supply, abdominal and lung transplant programs have turned to the donation after circulatory-determined death (DCD) donor. However, because heart function cannot be assessed after circulatory death, DCD heart transplantation was deemed high risk and never adopted routinely. We report a novel method of functional assessment of the DCD heart resulting in a successful clinical program...
December 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27894361/non-human-primate-malaria-parasites-out-of-the-forest-and-into-the-laboratory-corrigendum
#18
Axel Martinelli, Richard Culleton
No abstract text is available yet for this article.
November 29, 2016: Parasitology
https://www.readbyqxmd.com/read/27881709/relationship-between-metformin-use-and-recurrence-and-survival-in-patients-with-resected-stage-iii-colon-cancer-receiving-adjuvant-chemotherapy-results-from-north-central-cancer-treatment-group-n0147-alliance
#19
Preet Paul Singh, Qian Shi, Nathan R Foster, Axel Grothey, Suresh G Nair, Emily Chan, Anthony F Shields, Richard M Goldberg, Sharlene Gill, Morton S Kahlenberg, Frank A Sinicrope, Daniel J Sargent, Steven R Alberts
BACKGROUND: Preclinical and epidemiological data suggest that metformin might have antineoplastic properties against colon cancer (CC). However, the effect of metformin use on patient survival in stage III CC after curative resection is unknown. The survival outcomes were comparable regardless of the duration of metformin use. PATIENTS AND METHODS: Before randomization to FOLFOX (folinic acid, 5-fluorouracil, oxaliplatin) with or without cetuximab, 1,958 patients with stage III CC enrolled in the N0147 study completed a questionnaire with information on diabetes mellitus (DM) and metformin use...
December 2016: Oncologist
https://www.readbyqxmd.com/read/27856902/perovskite-perovskite-tandem-photovoltaics-with-optimized-band-gaps
#20
Giles E Eperon, Tomas Leijtens, Kevin A Bush, Rohit Prasanna, Thomas Green, Jacob Tse-Wei Wang, David P McMeekin, George Volonakis, Rebecca L Milot, Richard May, Axel Palmstrom, Daniel J Slotcavage, Rebecca A Belisle, Jay B Patel, Elizabeth S Parrott, Rebecca J Sutton, Wen Ma, Farhad Moghadam, Bert Conings, Aslihan Babayigit, Hans-Gerd Boyen, Stacey Bent, Feliciano Giustino, Laura M Herz, Michael B Johnston, Michael D McGehee, Henry J Snaith
We demonstrate four- and two-terminal perovskite-perovskite tandem solar cells with ideally matched band gaps. We develop an infrared-absorbing 1.2-electron volt band-gap perovskite, FA0.75Cs0.25Sn0.5Pb0.5I3, that can deliver 14.8% efficiency. By combining this material with a wider-band gap FA0.83Cs0.17Pb(I0.5Br0.5)3 material, we achieve monolithic two-terminal tandem efficiencies of 17.0% with >1.65-volt open-circuit voltage. We also make mechanically stacked four-terminal tandem cells and obtain 20.3% efficiency...
November 18, 2016: Science
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