Abstract：
:An intermediate band in the band gap of semiconductors is fundamental to the development of the intermediate band solar cells, but it is usually produced artificially, which imposes technical challenges on the experimental realization. Here we found that there are natural intermediate bands in the band gaps of the I2-II-IV-VI4 quaternary chalcogenide semiconductors such as Cu2ZnSnS4 and Ag2ZnSnSe4, which had been proposed as promising light-absorber semiconductors in thin film solar cells. By first-principles calculations, we found the lowest conduction band of these I2-II-IV-VI4 semiconductors in the kesterite structure is isolated (a lone band, resulting from the energy separation between Sn 5s and 5p states), which can be viewed as a natural intermediate band. The gap between the intermediate band and higher-energy conduction band can be increased through changing the crystal structure from the zincblende-derived kesterite structure to the wurtzite-derived wurtzite-kesterite structure. In contrast, the intermediate-conduction band gap shrinks when the component element Sn is replaced by Ge (Cu2ZnGeS4), and the gap even disappears (intermediate band disappear) when Sn is replaced by Si (Cu2ZnSiS4). Through tuning the intermediate-conduction and intermediate-valence band gaps, we show that the wurtzite-kesterite structured Ag2ZnSnSe4 may be a potential light-absorber semiconductor in intermediate band solar cells.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Liu Q,Cai Z,Han D,Chen Sdoi
10.1038/s41598-018-19935-5subject
Has Abstractpub_date
2018-01-25 00:00:00pages
1604issue
1issn
2045-2322pii
10.1038/s41598-018-19935-5journal_volume
8pub_type
杂志文章abstract：:The public goods game is a famous example illustrating the tragedy of the commons (Hardin in Science 162:1243-1248, 1968). In this game cooperating individuals contribute to a pool, which in turn is distributed to all members of the group, including defectors who reap the same rewards as cooperators without having mad...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-79731-y
更新日期：2020-12-28 00:00:00
abstract：:Behavioural studies revealed that the dog-human relationship resembles the human mother-child bond, but the underlying mechanisms remain unclear. Here, we report the results of a multi-method approach combining fMRI (N = 17), eye-tracking (N = 15), and behavioural preference tests (N = 24) to explore the engagement of...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-79247-5
更新日期：2020-12-17 00:00:00
abstract：:Recent reports have demonstrated the role of phyto-constituents in modulating inflammatory responses. Mangiferin isolated from Mangifera indica is known to induce potent anti-oxidative, anti-diabetic and anti-inflammatory activity. However, the molecular mechanism of its anti-inflammatory activity is not properly unde...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep42683
更新日期：2017-02-20 00:00:00
abstract：:Plant responses to salinity have been extensively studied over the last decades. Despite the vast accumulated knowledge, the ways Arabidopsis lateral roots (LR) cope with lethal salinity has not been fully resolved. Here we compared the primary root (PR) and the LR responses during events leading to lethal salinity (N...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-60163-7
更新日期：2020-02-24 00:00:00
abstract：:The biological processes involved in a drug's mechanisms of action are oftentimes dynamic, complex and difficult to discern. Time-course gene expression data is a rich source of information that can be used to unravel these complex processes, identify biomarkers of drug sensitivity and predict the response to a drug. ...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-74725-2
更新日期：2020-10-19 00:00:00
abstract：:Heparin is a widely used anticoagulant which inhibits factor Xa and thrombin through potentiation of antithrombin. We recently identified that the nucleic acid stain SYTOX reacts with platelet polyphosphate due to molecular similarities, some of which are shared by heparin. We attempted to study heparin in flowing blo...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-54818-3
更新日期：2019-12-04 00:00:00
abstract：:Excessive activation of inflammation and the accompanying lung vascular endothelial barrier disruption are primary pathogenic features of acute lung injury (ALI). Microtubule-associated protein 4 (MAP4), a tubulin assembly-promoting protein, is important for maintaining the microtubule (MT) cytoskeleton and cell-cell ...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep08895
更新日期：2015-03-09 00:00:00
abstract：:The Centiloid (CL) is a method for standardizing amyloid beta (Aβ) quantification through different ligands and methods. To find the most appropriate reference region to reduce the variance in the Aβ CL unit between 18F-florbetaben (FBB) and 18F-flutemetamol (FMM), we conducted head-to-head comparisons from 56 partici...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-70978-z
更新日期：2020-09-11 00:00:00
abstract：:Parkinson's Disease can be understood as a disorder of motor habits. A prediction of this theory is that early stage Parkinson's patients will display fewer errors caused by interference from previously over-learned behaviours. We test this prediction in the domain of skilled typing, where actions are easy to record a...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-39294-z
更新日期：2019-03-04 00:00:00
abstract：:Humans have an innate set of emotions recognised universally. However, emotion recognition also depends on socio-cultural rules. Although adults recognise vocal emotions universally, they identify emotions more accurately in their native language. We examined developmental trajectories of universal vocal emotion recog...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-018-26889-1
更新日期：2018-06-14 00:00:00
abstract：:Individuals with high trait anxiety form a non-clinical group with a predisposition for an anxiety-related bias in emotional and cognitive processing that is considered by some to be a prerequisite for psychiatric disorders. Anxious individuals tend to experience more worry under uncertainty, and processing uncertain ...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep21298
更新日期：2016-02-19 00:00:00
abstract：:Gayal (Bos frontalis) is a semi-wild and endangered bovine species that differs from domestic cattle (Bos taurus and Bos indicus), and its genetic background remains unclear. Here, we performed whole-genome sequencing of one Gayal for the first time, with one Red Angus cattle and one Japanese Black cattle as controls....
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep19787
更新日期：2016-01-25 00:00:00
abstract：:We report the structural, magnetoelectric (ME), magnetic and electric control of magnetic properties in Co4Nb2O9 (CNO) single crystal. A detailed ME measurement reveals a nonlinear ME effect instead of a linear ME effect in CNO single crystal. By fitting the magnetization-electric field (M-E) curve, it can be found th...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-14169-3
更新日期：2017-10-26 00:00:00
abstract：:Structural neuroimaging studies of posttraumatic stress disorder (PTSD) have typically reported reduced cortical thickness (CT) and gray matter volume (GMV) in subcortical structures and networks involved in memory retrieval, emotional processing and regulation, and fear acquisition and extinction. Although PTSD is mo...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-80776-2
更新日期：2021-01-19 00:00:00
abstract：:Cellular interactions can be modeled as complex dynamical systems represented by weighted graphs. The functionality of such networks, including measures of robustness, reliability, performance, and efficiency, are intrinsically tied to the topology and geometry of the underlying graph. Utilizing recently proposed geom...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep12323
更新日期：2015-07-14 00:00:00
abstract：:It is frequently assumed that in the limit of vanishing cooling rate, the glass transition phenomenon becomes a thermodynamic transition at a temperature TK. However, with any finite cooling rate, the system falls out of equilibrium at temperatures near Tg(>TK), implying that the very existence of the putative thermod...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep12577
更新日期：2015-07-24 00:00:00
abstract：:Pseudomonas aeruginosa is a highly invasive human pathogen in spite of the absence of classical host specific virulence factors. Virulence factors regulated by quorum sensing (QS) in P. aeruginosa cause acute infections to shift to chronic diseases. Several small regulatory RNAs (sRNAs) mediate fine-tuning of bacteria...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-018-36488-9
更新日期：2019-01-23 00:00:00
abstract：:Limited reference values exist for visceral adipose tissue (VAT) mass measured by DXA. The objectives of this study were to provide reference values for DXA-derived VAT mass and compare the association with anthropometry measures. The study cohort comprised 677 men and 738 women aged 18-65 years from Western Australia...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-73631-x
更新日期：2020-10-30 00:00:00
abstract：:Much of atmospheric water originates from transpiration, the process by which plants release H2O from pores, known as stomata, that simultaneously intake CO2 for photosynthesis. Controlling stomatal aperture can regulate the extent of water transport in response to dynamic environmental factors including osmotic stres...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep32394
更新日期：2016-08-31 00:00:00
abstract：:Basic leucine zippers (bZIPs) form a large plant transcription factor family. C and S1 bZIP groups can heterodimerize, fulfilling crucial roles in seed development and stress response. S1 sequences also harbor a unique regulatory mechanism, termed Sucrose-Induced Repression of Translation (SIRT). The conservation of b...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep30444
更新日期：2016-07-26 00:00:00
abstract：:Trees produce pollen during specific times of the year. Pollen can induce pollinosis, a type of allergic rhinitis, in humans. In Japan, allergenic pollen is mainly dispersed from February to May. Using data collected at 120 observation sites managed by the Japanese Ministry of the Environment, we studied the annual pa...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-47870-6
更新日期：2019-08-07 00:00:00
abstract：:Understanding the transmission patterns of African swine fever (ASF) among wild boar (Sus scrofa) is an issue of major interest, especially in the wake of the current ASF epidemic. Given the high stability of ASF-virus, there is concern about scavengers spreading infectious carcass material in the environment. Here, w...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-47623-5
更新日期：2019-08-07 00:00:00
abstract：:Bed bugs have shown a recent and rapid global expansion that has been suggested to be caused by cheap air travel. How a small, flightless and anachoretic insect that hides within its host's sleeping area manages to travel long distances is not yet clear. Bed bugs are attracted to the odour of sleeping humans and we su...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-11850-5
更新日期：2017-09-28 00:00:00
abstract：:Hypoxia-inducible transcription factors (HIF) form heterodimeric complexes that mediate cell responses to hypoxia. The oxygen-dependent stability and activity of the HIF-α subunits is traditionally associated to post-translational modifications such as hydroxylation, acetylation, ubiquitination, and phosphorylation. H...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep12698
更新日期：2015-08-03 00:00:00
abstract：:Quaternized polyacrylic polymer has many applications in water treatment because of its ion exchange effects, but its further industrial applications are largely restricted because of its poor mechanical strength. In this work, a magnetic anion exchange resin with a polyacrylic matrix (MAP) was prepared by incorporati...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-62153-1
更新日期：2020-03-23 00:00:00
abstract：:Seeded polymerisation of proteins forming amyloid fibres and their spread in tissues has been implicated in the pathogenesis of multiple neurodegenerative diseases: so called "prion-like" mechanisms. While ex vivo mammalian prions, composed of multichain assemblies of misfolded host-encoded prion protein (PrP), act as...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-018-36700-w
更新日期：2019-01-23 00:00:00
abstract：:Tacrolimus has a narrow therapeutic window and considerable variability in clinical use. Our goal was to compare the performance of multiple linear regression (MLR) and eight machine learning techniques in pharmacogenetic algorithm-based prediction of tacrolimus stable dose (TSD) in a large Chinese cohort. A total of ...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep42192
更新日期：2017-02-08 00:00:00
abstract：:During the last decades, atmospheric nitrogen loading in mountain ranges of the Northern Hemisphere has increased substantially, resulting in high nitrate concentrations in many lakes. Yet, how increased nitrogen has affected denitrification, a key process for nitrogen removal, is poorly understood. We measured actual...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-59759-w
更新日期：2020-02-20 00:00:00
abstract：:Visceral leishmaniasis (VL) is a fatal form of leishmaniasis which affects 70 countries, worldwide. Increasing drug resistance, HIV co-infection, and poor health system require operative vaccination strategy to control the VL transmission dynamics. Therefore, a holistic approach is needed to generate T and B memory ce...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-08842-w
更新日期：2017-08-15 00:00:00
abstract：:Hominin dietary specialization is crucial to understanding the evolutionary changes of craniofacial biomechanics and the interaction of food processing methods' effects on teeth. However, the diet-related dental wear processes of the earliest European hominins remain unknown because most of the academic attention has ...
journal_title：Scientific reports
pub_type： 历史文章,杂志文章
doi：10.1038/srep43319
更新日期：2017-02-27 00:00:00
