Abstract：
:Silicon dominates contemporary solar cell technologies1. But when absorbing photons, silicon (like other semiconductors) wastes energy in excess of its bandgap2. Reducing these thermalization losses and enabling better sensitivity to light is possible by sensitizing the silicon solar cell using singlet exciton fission, in which two excited states with triplet spin character (triplet excitons) are generated from a photoexcited state of higher energy with singlet spin character (a singlet exciton)3-5. Singlet exciton fission in the molecular semiconductor tetracene is known to generate triplet excitons that are energetically matched to the silicon bandgap6-8. When the triplet excitons are transferred to silicon they create additional electron-hole pairs, promising to increase cell efficiencies from the single-junction limit of 29 per cent to as high as 35 per cent9. Here we reduce the thickness of the protective hafnium oxynitride layer at the surface of a silicon solar cell to just eight angstroms, using electric-field-effect passivation to enable the efficient energy transfer of the triplet excitons formed in the tetracene. The maximum combined yield of the fission in tetracene and the energy transfer to silicon is around 133 per cent, establishing the potential of singlet exciton fission to increase the efficiencies of silicon solar cells and reduce the cost of the energy that they generate.
journal_name
Naturejournal_title
Natureauthors
Einzinger M,Wu T,Kompalla JF,Smith HL,Perkinson CF,Nienhaus L,Wieghold S,Congreve DN,Kahn A,Bawendi MG,Baldo MAdoi
10.1038/s41586-019-1339-4subject
Has Abstractpub_date
2019-07-01 00:00:00pages
90-94issue
7763eissn
0028-0836issn
1476-4687pii
10.1038/s41586-019-1339-4journal_volume
571pub_type
杂志文章相关文献
NATURE文献大全abstract：:The fundus of the guinea-pig stomach actively dilates in response to low increases in intragastric pressure. This physiological response, now called adaptive relaxation, accommodates the intake of liquid or food. It is independent of external innervation, resistant to ganglion blockade, but reflex in origin. The nerve...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/351477a0
更新日期：1991-06-06 00:00:00
abstract：:Appropriate repair of DNA lesions and the inhibition of DNA repair activities at telomeres are crucial to prevent genomic instability. By fuelling the generation of genetic alterations and by compromising cell viability, genomic instability is a driving force in cancer and ageing. Here we identify MAD2L2 (also known a...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature14216
更新日期：2015-05-28 00:00:00
abstract：:At fertilization, an increase of cytosolic calcium ions (Ca2+) triggers various activation responses in animal eggs. In vertebrates, these responses include exit from metaphase arrest in meiosis II (MII exit) and cortical remodelling initiated by cortical granule exocytosis. Although the essential requirement of Ca2+/...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature06136
更新日期：2007-09-20 00:00:00
abstract：:Statistical evidence of reduced coronary heart disease in areas of high wine consumption has led to the widespread belief that wine affords a protective effect. Although moderate drinking of any alcohol helps to reduce the incidence of coronary heart disease, there is no clear evidence that red wine confers an additio...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/414863a
更新日期：2001-12-20 00:00:00
abstract：:Tumour necrosis factor is a trimeric molecule, each subunit of which consists of an antiparallel beta-sandwich. Individual subunits from the trimer by a novel edge-to-face packing of beta-sheets. A comparison of the subunit fold with that of other proteins reveals a remarkable similarity to the 'jelly-roll' structural...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/338225a0
更新日期：1989-03-16 00:00:00
abstract：:There is considerable interest in the existence and significance of alternative conformations of DNA to the right-handed B-form described originally by Watson and Crick. The indirect immunofluorescence observations of Nordheim et al., Arndt-Jovin et al. and Lemeunier et al. that antibodies against left-handed Z-DNA bi...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/305338a0
更新日期：1983-09-22 00:00:00
abstract：:The difficulty of working with the intact brain in vivo has led to the increasing use of nerve cell cultures in neurobiology. However, dissociated cells cannot be unambiguously identified by morphological criteria before the third week in culture, for it is not until then that the basic morphology and size of neurones...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/281376a0
更新日期：1979-10-04 00:00:00
abstract：:Unlike the electroweak sector of the standard model of particle physics, quantum chromodynamics (QCD) is surprisingly symmetric under time reversal. As there is no obvious reason for QCD being so symmetric, this phenomenon poses a theoretical problem, often referred to as the strong CP problem. The most attractive sol...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature20115
更新日期：2016-11-03 00:00:00
abstract：:The maternal messenger RNA An3 was originally identified localized to the animal hemisphere of Xenopus laevis oocytes, eggs and early embryos. Xenopus embryos depend on mRNA and protein present in the egg before fertilization (maternal molecules) to provide the information needed for early development. Localization of...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/349717a0
更新日期：1991-02-21 00:00:00
abstract：:Ordinarily, photons do not interact with one another. However, atoms can be used to mediate photonic interactions1,2, raising the prospect of forming synthetic materials3 and quantum information systems4-7 from photons. One promising approach combines highly excited Rydberg atoms8-12 with the enhanced light-matter cou...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/s41586-019-1354-5
更新日期：2019-07-01 00:00:00
abstract：:Alternative splicing of pre-messenger RNAs diversifies gene products in eukaryotes and is guided by factors that enable spliceosomes to recognize particular splice sites. Here we report that alternative splicing of Saccharomyces cerevisiae SRC1 pre-mRNA is promoted by the conserved ubiquitin-like protein Hub1. Structu...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature10143
更新日期：2011-05-25 00:00:00
abstract：:The human gene for the hepatic enzyme phenylalanine hydroxylase has been cloned and used to analyse the phenylalanine hydroxylase locus in the human genome. The detection of polymorphisms in this locus by several restriction enzymes has allowed feasibility studies of prenatal diagnosis of classical phenylketonuria and...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/306151a0
更新日期：1983-11-10 00:00:00
abstract：: ...
journal_title：Nature
pub_type： 评论,新闻
doi：10.1038/d41586-018-07224-0
更新日期：2018-11-01 00:00:00
abstract：:The best spectrographs are limited in stability by their calibration light source. Laser frequency combs are the ideal calibrators for astronomical spectrographs. They emit a spectrum of lines that are equally spaced in frequency and that are as accurate and stable as the atomic clock relative to which the comb is sta...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature11092
更新日期：2012-05-30 00:00:00
abstract：:The vasa gene product of Drosophila melanogaster is required only in the female germ line. Progeny of females homozygous for vasa mutations lack posterior structures and pole cells. Isolation and characterization of vasa genomic and complementary DNA clones show that the transcript is abundant in the female germ line ...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/335611a0
更新日期：1988-10-13 00:00:00
abstract：:The fossil record of the living great apes is poor. New fossils from undocumented areas, particularly the equatorial forested habitats of extant hominoids, are therefore crucial for understanding their origins and evolution. Two main competing hypotheses have been proposed for orang-utan origins: dental similarities s...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature02245
更新日期：2004-01-29 00:00:00
abstract：:Mating and egg laying are tightly cooordinated events in the reproductive life of all oviparous females. Oviposition is typically rare in virgin females but is initiated after copulation. Here we identify the neural circuitry that links egg laying to mating status in Drosophila melanogaster. Activation of female-speci...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/s41586-020-2055-9
更新日期：2020-03-01 00:00:00
abstract：:Understanding how ecological communities are organized and how they change through time is critical to predicting the effects of climate change. Recent work documenting the co-occurrence structure of modern communities found that most significant species pairs co-occur less frequently than would be expected by chance....
journal_title：Nature
pub_type： 历史文章,杂志文章
doi：10.1038/nature16447
更新日期：2016-01-07 00:00:00
abstract：:In bacteria, archaea, fungi and plants the Trk, Ktr and HKT ion transporters are key components of osmotic regulation, pH homeostasis and resistance to drought and high salinity. These ion transporters are functionally diverse: they can function as Na(+) or K(+) channels and possibly as cation/K(+) symporters. They ar...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature12055
更新日期：2013-04-18 00:00:00
abstract：:A mouse major histocompatibility antigen (H-2) gene, encoding a novel H-2Ld molecule lacking its intracytoplasmic domain, has been constructed and introduced into mouse L-cells. The novel H-2 molecule is found on the surface of the transfected cells at the same level as L-cells transfected with the native H-2Ld gene. ...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/307432a0
更新日期：1984-02-02 00:00:00
abstract：:Humans and other animals must often make decisions on the basis of imperfect evidence. Statisticians use measures such as P values to assign degrees of confidence to propositions, but little is known about how the brain computes confidence estimates about decisions. We explored this issue using behavioural analysis an...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature07200
更新日期：2008-09-11 00:00:00
abstract：:Laboratory measurements of sound velocities of high-pressure minerals provide crucial information on the composition and constitution of the deep mantle via comparisons with observed seismic velocities. Calcium silicate (CaSiO3) perovskite (CaPv) is a high-pressure phase that occurs at depths greater than about 560 ki...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/s41586-018-0816-5
更新日期：2019-01-01 00:00:00
abstract：: ...
journal_title：Nature
pub_type： 社论
doi：10.1038/d41586-018-06975-0
更新日期：2018-10-01 00:00:00
abstract：:The abundance of chlorine in the Earth's atmosphere increased considerably during the 1970s to 1990s, following large emissions of anthropogenic long-lived chlorine-containing source gases, notably the chlorofluorocarbons. The chemical inertness of chlorofluorocarbons allows their transport and mixing throughout the t...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature13857
更新日期：2014-11-06 00:00:00
abstract：:Haemophilia B, or Christmas disease, is an inherited X-chromosome-linked bleeding disorder caused by a defect in clotting factor IX and occurs in about 1 in 30,000 males in the United Kingdom. Injection of factor IX concentrate obtained from blood donors allows most patients to be successfully managed. However, becaus...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/315683a0
更新日期：1985-06-20 00:00:00
abstract：:Eukaryotic cells seem to use GTP hydrolysis to regulate vesicular traffic in exocytosis and endocytosis. The best evidence for this comes from studies on the yeast Saccharomyces cerevisiae that have identified two small Ras-related GTP-binding proteins, Sec4p and Ypt1p, which control distinct stages of the secretory p...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/345553a0
更新日期：1990-06-07 00:00:00
abstract：:In vertebrates the developing hindbrain is organized in segmental units. These units provide the primary grid for differentiation and axonal outgrowth. In the more anterior regions of the brain, however, the subdivisions remain more controversial. Cellular and molecular studies of the embryonic brain in lower vertebra...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/353267a0
更新日期：1991-09-19 00:00:00
abstract：:Macroscopic mechanical objects and electromagnetic degrees of freedom can couple to each other through radiation pressure. Optomechanical systems in which this coupling is sufficiently strong are predicted to show quantum effects and are a topic of considerable interest. Devices in this regime would offer new types of...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature06715
更新日期：2008-03-06 00:00:00
abstract：: ...
journal_title：Nature
pub_type： 新闻
doi：10.1038/d41586-018-07804-0
更新日期：2018-12-01 00:00:00
abstract：:Brain-derived neurotrophic factor (BDNF) and other neurotrophins have a vital role in the development of the rat and mouse nervous system by influencing the expression of many specific genes that promote differentiation, cell survival, synapse formation and, later, synaptic plasticity. Although nitric oxide (NO) is kn...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature07238
更新日期：2008-09-18 00:00:00
