Abstract:
:Blends of electron-donating and -accepting organic semiconductors are widely used as photoactive materials in next-generation solar cells and photodetectors. The yield of free charges in these systems is often determined by the separation of interfacial electron-hole pairs, which is expected to depend on the ability of the faster carrier to escape the Coulomb potential. Here we show, by measuring geminate and non-geminate losses and key transport parameters in a series of bulk-heterojunction solar cells, that the charge-generation yield increases with increasing slower carrier mobility. This is in direct contrast with the well-established Braun model where the dissociation rate is proportional to the mobility sum, and recent models that underscore the importance of fullerene aggregation for coherent electron propagation. The behaviour is attributed to the restriction of opposite charges to different phases, and to an entropic contribution that favours the joint separation of both charge carriers.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Stolterfoht M,Armin A,Shoaee S,Kassal I,Burn P,Meredith Pdoi
10.1038/ncomms11944subject
Has Abstractpub_date
2016-06-21 00:00:00pages
11944issn
2041-1723pii
ncomms11944journal_volume
7pub_type
杂志文章abstract::The ability to quickly spread a liquid across a surface and form a film is fundamental for a diverse range of technological processes, including printing, painting and spraying. Here we show that liquid dielectrophoresis or electrowetting can produce wetting on normally non-wetting surfaces, without needing modificati...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms2619
更新日期:2013-01-01 00:00:00
abstract::Domain walls can be driven by current at very high speeds in nanowires formed from ultra-thin, perpendicularly magnetized cobalt layers and cobalt/nickel multilayers deposited on platinum underlayers due to a chiral spin torque. An important feature of this torque is a magnetic chiral exchange field that each domain w...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms4910
更新日期:2014-05-23 00:00:00
abstract::Molecular spins have become key enablers for exploring magnetic interactions, quantum information processes and many-body effects in metals. Metal-organic molecules, in particular, let the spin state of the core metal ion to be modified according to its organic environment, allowing localized magnetic moments to emerg...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms13751
更新日期:2016-12-12 00:00:00
abstract::Single-atom catalysts have recently been applied in many applications such as CO oxidation. Experimental in situ investigations into this reaction, however, are limited. Hereby, we present a suite of operando/in situ spectroscopic experiments for structurally well-defined atomically dispersed Rh on phosphotungstic aci...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/s41467-019-09188-9
更新日期:2019-03-22 00:00:00
abstract::The xeroderma pigmentosum C (XPC) complex initiates nucleotide excision repair by recognizing DNA lesions before recruiting downstream factors. How XPC detects structurally diverse lesions embedded within normal DNA is unknown. Here we present a crystal structure that captures the yeast XPC orthologue (Rad4) on a sing...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms6849
更新日期:2015-01-06 00:00:00
abstract::The spin of a single electron in a semiconductor quantum dot provides a well-controlled and long-lived qubit implementation. The electron charge in turn allows control of the position of individual electrons in a quantum dot array, and enables charge sensors to probe the charge configuration. Here we show that the Cou...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/s41467-020-20388-6
更新日期:2021-01-04 00:00:00
abstract::The Hippo pathway is an evolutionarily conserved regulator of organ size and tumorigenesis that negatively regulates cell growth and survival. Here we report that Yes-associated protein (YAP), the terminal effector of the Hippo pathway, interacts with FoxO1 in the nucleus of cardiomyocytes, thereby promoting survival....
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms4315
更新日期:2014-01-01 00:00:00
abstract::Bright solitons are non-dispersive wave solutions, arising in a diverse range of nonlinear, one-dimensional systems, including atomic Bose-Einstein condensates with attractive interactions. In reality, cold-atom experiments can only approach the idealized one-dimensional limit necessary for the realization of true sol...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms2893
更新日期:2013-01-01 00:00:00
abstract::The spikelet is the basal unit of inflorescence in grasses, and its formation is crucial for reproductive success and cereal yield. Here, we report a previously unknown role of the plant hormone jasmonic acid (JA) in determining rice (Oryza sativa) spikelet morphogenesis. The extra glume 1 (eg1) and eg2 mutants exhibi...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms4476
更新日期:2014-03-19 00:00:00
abstract::Cascade reactions initiated by radical addition to alkynes are synthetically very attractive because they enable access to highly complex molecular skeletons in only few synthetic steps under usually mild conditions. Here we report a general radical cascade reaction of alkynes, N-fluoroarylsulfonimides and alcohols, e...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms8011
更新日期:2015-04-22 00:00:00
abstract::The integration of nanophotonics and atomic physics has been a long-sought goal that would open new frontiers for optical physics, including novel quantum transport and many-body phenomena with photon-mediated atomic interactions. Reaching this goal requires surmounting diverse challenges in nanofabrication and atomic...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms4808
更新日期:2014-05-08 00:00:00
abstract::In two-dimensional (2D) lattices, the electronic levels are unevenly spaced, and the density of states (DOS) displays a logarithmic divergence known as the Van Hove singularity (VHS). This is the case in particular for the layered cuprate superconductors. The scanning tunnelling microscope (STM) probes the DOS, and is...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms1229
更新日期:2011-01-01 00:00:00
abstract::Recent advances in the understanding of spin orbital effects in ultrathin magnetic heterostructures have opened new paradigms to control magnetic moments electrically. The Dzyaloshinskii-Moriya interaction (DMI) is said to play a key role in forming a Néel-type domain wall that can be driven by the spin Hall torque. H...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms5655
更新日期:2014-08-18 00:00:00
abstract::One key route for controlling reaction selectivity in heterogeneous catalysis is to prepare catalysts that exhibit only specific types of sites required for desired product formation. Here we show that alkanethiolate self-assembled monolayers with varying surface densities can be used to tune selectivity to desired hy...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms3448
更新日期:2013-01-01 00:00:00
abstract::Electron motion in chemical bonds occurs on an attosecond timescale. This ultrafast motion can be driven by strong laser fields. Ultrashort asymmetric laser pulses are known to direct electrons to a certain direction. But do symmetric laser pulses destroy symmetry in breaking chemical bonds? Here we answer this questi...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms3177
更新日期:2013-01-01 00:00:00
abstract::Although, a number of pathogenic mutations have been found for Alzheimer's disease (AD), only one protective mutation has been identified so far in humans. Here we identify possible protective deletion mutations in the 3'-UTR of the amyloid precursor protein (App) gene in mice. We use an App knock-in mouse model carry...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/s41467-018-04238-0
更新日期:2018-05-04 00:00:00
abstract::Ductal occlusion has been postulated to precipitate focal pancreatic inflammation, while the nature of the primary occluding agents has remained elusive. Neutrophils make use of histone citrullination by peptidyl arginine deiminase-4 (PADI4) in contact to particulate agents to extrude decondensed chromatin as neutroph...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms10973
更新日期:2016-03-11 00:00:00
abstract::Chemotherapy remains a mainstay of cancer treatment but its use is often limited by the development of adverse reactions. Severe loss of body weight (cachexia) is a frequent cause of death in cancer patients and is exacerbated by chemotherapy. We show that genetic inactivation of vascular endothelial growth factor (VE...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms12528
更新日期:2016-08-19 00:00:00
abstract::Aortic dissection and intramural haematoma comprise an aortopathy involving separation of the aortic wall. Underlying mechanisms of the condition remain unclear. Here we show that granulocyte macrophage colony-stimulating factor (GM-CSF) is a triggering molecule for this condition. Transcription factor Krüppel-like fa...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms7994
更新日期:2015-04-29 00:00:00
abstract::Cyclic nucleotide-binding (CNB) domains allosterically regulate the activity of proteins with diverse functions, but the mechanisms that enable the cyclic nucleotide-binding signal to regulate distant domains are not well understood. Here we use optical tweezers and molecular dynamics to dissect changes in folding ene...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/s41467-019-11930-2
更新日期:2019-09-04 00:00:00
abstract::Blood brain barrier (BBB) breakdown is not only a consequence of but also contributes to many neurological disorders, including stroke and Alzheimer's disease. How the basement membrane (BM) contributes to the normal functioning of the BBB remains elusive. Here we use conditional knockout mice and an acute adenovirus-...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms4413
更新日期:2014-03-03 00:00:00
abstract::Vibrio parahaemolyticus is the leading cause of seafood-borne diarrheal diseases. Experimental overproduction of a type 3 secretion system (T3SS1) in this pathogen leads to decreased intestinal colonization, which suggests that T3SS1 repression is required for maximal virulence. However, the mechanisms by which T3SS1 ...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/s41467-020-19506-1
更新日期:2020-11-13 00:00:00
abstract::Although multiphoton-pumped lasing from a solution of chromophores is important in the emerging fields of nonlinear optofluidics and bio-photonics, conventionally used organic dyes are often rendered unsuitable because of relatively small multiphoton absorption cross-sections and low photostability. Here, we demonstra...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms9513
更新日期:2015-09-30 00:00:00
abstract::The need for sustainable catalysts for an efficient hydrogen evolution reaction is of significant interest for modern society. Inspired by comparable structural properties of [FeNi]-hydrogenase, here we present the natural ore pentlandite (Fe4.5Ni4.5S8) as a direct 'rock' electrode material for hydrogen evolution unde...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms12269
更新日期:2016-07-27 00:00:00
abstract::Despite the lack of a layered neocortex and fundamental differences in endbrain organization in birds compared with mammals, intelligent species evolved from both vertebrate classes. Among birds, corvids show exceptional cognitive flexibility. Here we explore the neuronal foundation of corvid cognition by recording si...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms3878
更新日期:2013-01-01 00:00:00
abstract::Plasma dynamics critically depends on density and temperature, thus well-controlled experimental realizations are essential benchmarks for theoretical models. The formation of an ultracold plasma can be triggered by ionizing a tunable number of atoms in a micrometer-sized volume of a 87Rb Bose-Einstein condensate (BEC...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/s41467-020-20815-8
更新日期:2021-01-26 00:00:00
abstract::Gross chromosomal rearrangements (GCRs), such as translocations, deletions or inversions, are often generated by illegitimate repair between two DNA breakages at regions with nucleotide sequences that might potentially adopt a non-B DNA conformation. We previously established a plasmid-based model system that recapitu...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms2595
更新日期:2013-01-01 00:00:00
abstract::The accurate measurement of microscopic force fields is crucial in many branches of science and technology, from biophotonics and mechanobiology to microscopy and optomechanics. These forces are often probed by analysing their influence on the motion of Brownian particles. Here we introduce a powerful algorithm for mi...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/s41467-018-07437-x
更新日期:2018-12-04 00:00:00
abstract::Priming of the mucosal immune system during the postnatal period substantially influences host-microbial interaction and susceptibility to immune-mediated diseases in adult life. The underlying mechanisms are ill defined. Here we show that shortly after birth, CD4 T cells populate preformed lymphoid structures in the ...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/ncomms8725
更新日期:2015-07-21 00:00:00
abstract::A fundamental puzzle of human evolution is how we evolved to cooperate with genetically unrelated strangers in transient interactions. Group-level selection on culturally differentiated populations is one proposed explanation. We evaluate a central untested prediction of Cultural Group Selection theory, by assessing w...
journal_title:Nature communications
pub_type: 杂志文章
doi:10.1038/s41467-020-14416-8
更新日期:2020-02-04 00:00:00