Determination of the concentration of impurities in GaN from photoluminescence and secondary-ion mass spectrometry.


:Photoluminescence (PL) was used to estimate the concentration of carbon in GaN grown by hydride vapor phase epitaxy (HVPE). The PL data were compared with profiles of the impurities obtained from secondary ion mass spectrometry (SIMS) measurements. Comparison of PL and SIMS data has revealed that apparently high concentrations of C and O at depths up to 1 µm in SIMS profiles do not represent depth distributions of these species in the GaN matrix but are rather caused by post-growth surface contamination and knocking-in impurity species from the surface. In particular, PL analysis supplemented by reactive ion etching up to the depth of 400 nm indicates that the concentration of carbon in nitrogen sites is below 2-5 × 1015 cm-3 at any depth of GaN samples grown by HVPE. We demonstrate that PL is a very sensitive and reliable tool to determine the concentrations of impurities in the GaN matrix.


Sci Rep


Scientific reports


Reshchikov MA,Vorobiov M,Andrieiev O,Ding K,Izyumskaya N,Avrutin V,Usikov A,Helava H,Makarov Y




Has Abstract


2020-02-10 00:00:00












  • Engineering a humanized telomerase reverse transcriptase gene in mouse embryonic stem cells.

    abstract::Telomerase is expressed in adult mouse, but not in most human, tissues and mouse telomeres are much longer than those in humans. This interspecies difference of telomere homeostasis poses a challenge in modeling human diseases using laboratory mice. Using chromatinized bacterial artificial chromosome reporters, we dis...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Cheng,Zhao Y,Zhang F,Zhang J,Wang S,Zhu J

    更新日期:2019-07-04 00:00:00

  • Roll-to-roll slot-die coating of 400 mm wide, flexible, transparent Ag nanowire films for flexible touch screen panels.

    abstract::We report fabrication of large area Ag nanowire (NW) film coated using a continuous roll-to-roll (RTR) slot die coater as a viable alternative to conventional ITO electrodes for cost-effective and large-area flexible touch screen panels (TSPs). By controlling the flow rate of shear-thinning Ag NW ink in the slot die, ...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Kim DJ,Shin HI,Ko EH,Kim KH,Kim TW,Kim HK

    更新日期:2016-09-28 00:00:00

  • Detection of subclonal L1 transductions in colorectal cancer by long-distance inverse-PCR and Nanopore sequencing.

    abstract::Long interspersed nuclear elements-1 (L1s) are a large family of retrotransposons. Retrotransposons are repetitive sequences that are capable of autonomous mobility via a copy-and-paste mechanism. In most copy events, only the L1 sequence is inserted, however, they can also mobilize the flanking non-repetitive region ...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Pradhan B,Cajuso T,Katainen R,Sulo P,Tanskanen T,Kilpivaara O,Pitkänen E,Aaltonen LA,Kauppi L,Palin K

    更新日期:2017-11-06 00:00:00

  • Fine-tuning of synaptic upscaling at excitatory synapses by endocannabinoid signaling is mediated via the CB1 receptor.

    abstract::The endocannabinoid 2-arachidonoylglycerol (2-AG) functions as a retrograde signaling molecule mediating synaptic transmission and plasticity at both inhibitory and excitatory synapses. However, little is known about whether 2-AG signaling is involved in homeostatic regulation of miniature synaptic events at excitator...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Song Y,Zhang J,Chen C

    更新日期:2015-11-06 00:00:00

  • Short-term CFTR inhibition reduces islet area in C57BL/6 mice.

    abstract::Cystic fibrosis-related diabetes (CFRD) worsens CF lung disease leading to early mortality. Loss of beta cell area, even without overt diabetes or pancreatitis is consistently observed. We investigated whether short-term CFTR inhibition was sufficient to impact islet morphology and function in otherwise healthy mice. ...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Khan D,Kelsey R,Maheshwari RR,Stone VM,Hasib A,Manderson Koivula FN,Watson A,Harkin S,Irwin N,Shaw JA,McClenaghan NH,Venglovecz V,Ébert A,Flodström-Tullberg M,White MG,Kelly C

    更新日期:2019-08-02 00:00:00

  • Combined use of transversus abdominis plane block and laryngeal mask airway during implementing ERAS programs for patients with primary liver cancer: a randomized controlled trial.

    abstract::The incidence and mortality of primary liver cancer are very high and resection of tumor is the most crucial treatment for it. We aimed to assess the efficacy and safety of combined use of transversus abdominis plane (TAP) block and laryngeal mask airway (LMA) during implementing Enhanced Recovery After Surgery (ERAS)...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Huang HM,Chen RX,Zhu LM,Zhao WS,Ye XJ,Luo JW,Lu FD,Zhang L,Yang XY,Yuan Y,Cao J

    更新日期:2020-09-10 00:00:00

  • Computational affinity maturation of camelid single-domain intrabodies against the nonamyloid component of alpha-synuclein.

    abstract::Improving the affinity of protein-protein interactions is a challenging problem that is particularly important in the development of antibodies for diagnostic and clinical use. Here, we used structure-based computational methods to optimize the binding affinity of VHNAC1, a single-domain intracellular antibody (intrab...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Mahajan SP,Meksiriporn B,Waraho-Zhmayev D,Weyant KB,Kocer I,Butler DC,Messer A,Escobedo FA,DeLisa MP

    更新日期:2018-12-04 00:00:00

  • Analytical model of surface second-harmonic generation.

    abstract::The process of second-harmonic generation (SHG) in a finite one-dimensional nonlinear medium is analyzed in parallel by the Green-function technique and the Fourier-transform method. Considering the fundamental pump field propagating along a given direction and eliminating back-reflections at the boundaries the terms ...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Javůrek D,Peřina J Jr

    更新日期:2019-03-20 00:00:00

  • Tendon Fascicle-Inspired Nanofibrous Scaffold of Polylactic acid/Collagen with Enhanced 3D-Structure and Biomechanical Properties.

    abstract::Surgical treatment of tendon lesions still yields unsatisfactory clinical outcomes. The use of bioresorbable scaffolds represents a way forward to improve tissue repair. Scaffolds for tendon reconstruction should have a structure mimicking that of the natural tendon, while providing adequate mechanical strength and st...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Sensini A,Gualandi C,Zucchelli A,Boyle LA,Kao AP,Reilly GC,Tozzi G,Cristofolini L,Focarete ML

    更新日期:2018-11-21 00:00:00

  • 18β-glycyrrhetyl-3-O-sulfate would be a causative agent of licorice-induced pseudoaldosteronism.

    abstract::Licorice-induced pseudoaldosteronism is a common adverse effect in traditional Japanese Kampo medicine, and 3-monoglucuronyl glycyrrhetinic acid (3MGA) was considered as a causative agent of it. Previously, we found 22α-hydroxy-18β-glycyrrhetyl-3-O-sulfate-30-glucuronide (1), one of the metabolites of glycyrrhizin (GL...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Ishiuchi K,Morinaga O,Ohkita T,Tian C,Hirasawa A,Mitamura M,Maki Y,Kondo T,Yasujima T,Yuasa H,Minamizawa K,Namiki T,Makino T

    更新日期:2019-02-07 00:00:00

  • Sedentary lifestyle related exosomal release of Hotair from gluteal-femoral fat promotes intestinal cell proliferation.

    abstract::Pioneering epidemiological work has established strong association of sedentary lifestyle and obesity with the risk of colorectal cancer, while the detailed underlying mechanism remains unknown. Here we show that Hotair (HOX transcript antisense RNA) is a pro-adipogenic long non-coding RNA highly expressed in gluteal-...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Lu X,Bai D,Liu X,Zhou C,Yang G

    更新日期:2017-03-31 00:00:00

  • Freshwater lake ecosystem shift caused by social-economic transitions in Yangtze River Basin over the past century.

    abstract::Global lake systems have undergone rapid degradation over the past century. Scientists and managers are struggling to manage the highly degraded lake systems to cope with escalating anthropogenic pressures. Improved knowledge of how lakes and social systems co-evolved up to the present is vital for understanding, mode...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Zhang K,Yang X,Kattel G,Lin Q,Shen J

    更新日期:2018-11-21 00:00:00

  • Fusion proteins with chromogenic and keratin binding modules.

    abstract::The present research relates to a fusion protein comprising a chromogenic blue ultramarine protein (UM) bound to a keratin-based peptide (KP). The KP-UM fusion protein explores UM chromogenic nature together with KP affinity towards hair. For the first time a fusion protein with a chromogenic nature is explored as a h...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Tinoco A,Antunes E,Martins M,Gonçalves F,Gomes AC,Silva C,Cavaco-Paulo A,Ribeiro A

    更新日期:2019-10-01 00:00:00

  • Dairy Product, Calcium Intake and Lung Cancer Risk: A Systematic Review with Meta-Analysis.

    abstract::The effects of dairy products on human health have been studied for years. However, the relationship between dairy products as well as calcium intake and the risk of lung cancer is still inconclusive. A total of 32 studies regarding this association were identified from the PubMed and Web of Science databases through ...

    journal_title:Scientific reports

    pub_type: 杂志文章,meta分析,评审


    authors: Yang Y,Wang X,Yao Q,Qin L,Xu C

    更新日期:2016-02-15 00:00:00

  • Targeted analysis of polymorphic loci from low-coverage shotgun sequence data allows accurate genotyping of HLA genes in historical human populations.

    abstract::The highly polymorphic human leukocyte antigen (HLA) plays a crucial role in adaptive immunity and is associated with various complex diseases. Accurate analysis of HLA genes using ancient DNA (aDNA) data is crucial for understanding their role in human adaptation to pathogens. Here, we describe the TARGT pipeline for...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Pierini F,Nutsua M,Böhme L,Özer O,Bonczarowska J,Susat J,Franke A,Nebel A,Krause-Kyora B,Lenz TL

    更新日期:2020-04-30 00:00:00

  • Self-biased 215 MHz magnetoelectric NEMS resonator for ultra-sensitive DC magnetic field detection.

    abstract::High sensitivity magnetoelectric sensors with their electromechanical resonance frequencies < 200 kHz have been recently demonstrated using magnetostrictive/piezoelectric magnetoelectric heterostructures. In this work, we demonstrate a novel magnetoelectric nano-electromechanical systems (NEMS) resonator with an elect...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Nan T,Hui Y,Rinaldi M,Sun NX

    更新日期:2013-01-01 00:00:00

  • Photochemical analysis of structural transitions in DNA liquid crystals reveals differences in spatial structure of DNA molecules organized in liquid crystalline form.

    abstract::The anisotropic shape of DNA molecules allows them to form lyotropic liquid crystals (LCs) at high concentrations. This liquid crystalline arrangement is also found in vivo (e.g., in bacteriophage capsids, bacteria or human sperm nuclei). However, the role of DNA liquid crystalline organization in living organisms sti...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Brach K,Hatakeyama A,Nogues C,Olesiak-Banska J,Buckle M,Matczyszyn K

    更新日期:2018-03-14 00:00:00

  • Quantitative Proteomics Analysis Reveals Novel Targets of miR-21 in Zebrafish Embryos.

    abstract::MicroRNAs (miRNAs) are noncoding RNAs which control gene expression by the suppression of translation or the degradation of mRNAs. Dre-miR-21 (miR-21) has been reported to impact cardiac valvulogenesis in zebrafish embryos. However, the target genes of miR-21 are still largely unknown. Here a tandem isobaric mass tag ...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Wu Y,Lou QY,Ge F,Xiong Q

    更新日期:2017-06-22 00:00:00

  • Ubiquitin-conjugating enzyme E2T (UBE2T) and denticleless protein homolog (DTL) are linked to poor outcome in breast and lung cancers.

    abstract::Protein ubiquitination and degradation represent druggable vulnerabilities of cancer cells. We used gene expression and functional annotation analyses to identify genes in the ubiquitin pathway which are differentially expressed between normal breast and basal-like tumors. With this approach we identified 16 ubiquitin...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Perez-Peña J,Corrales-Sánchez V,Amir E,Pandiella A,Ocana A

    更新日期:2017-12-13 00:00:00

  • Strong improvement of the transport characteristics of YBa2Cu3O7-x grain boundaries using ionic liquid gating.

    abstract::For more than 30 years, the remarkable superconducting properties of REBa2Cu3O7-x (RE = rare earth) compounds have triggered research studies across the world. Accordingly, significant progresses have been made both from a basic understanding and a fabrication processes perspective. Yet, today, the major technological...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Fête A,Senatore C

    更新日期:2018-12-07 00:00:00

  • Soluble epoxide hydrolase inhibition decreases reperfusion injury after focal cerebral ischemia.

    abstract::Epoxyeicosatrienoic acids (EETs) are produced by cytochrome P450 epoxygenases from arachidonic acid, and their rapid metabolism is mainly through soluble epoxide hydrolase (sEH). EETs exert vasodilatory, anti-inflammatory, anti-apoptotic, and pro-angiogenic effects. Administration of sEH inhibitors before or at the on...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Tu R,Armstrong J,Lee KSS,Hammock BD,Sapirstein A,Koehler RC

    更新日期:2018-03-27 00:00:00

  • Experimental challenge of pregnant cattle with the putative abortifacient Waddlia chondrophila.

    abstract::Waddlia chondrophila is a Gram-negative intracellular bacterial organism that is related to classical chlamydial species and has been implicated as a cause of abortion in cattle. Despite an increasing number of observational studies linking W. chondrophila infection to cattle abortion, little direct experimental evide...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Wheelhouse N,Flockhart A,Aitchison K,Livingstone M,Finlayson J,Flachon V,Sellal E,Dagleish MP,Longbottom D

    更新日期:2016-11-14 00:00:00

  • Emphatic visualization of sphingomyelin-rich domains by inter-lipid FRET imaging using fluorescent sphingomyelins.

    abstract::Imaging the distribution of sphingomyelin (SM) in membranes is an important issue in lipid-raft research. Recently we developed novel fluorescent SM analogs that exhibit partition and dynamic behaviors similar to native SM, and succeeded in visualizing lateral domain-segregation between SM-rich liquid-ordered (Lo) and...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Kinoshita M,Ano H,Murata M,Shigetomi K,Ikenouchi J,Matsumori N

    更新日期:2017-12-01 00:00:00

  • Surface and Bulk Carbide Transformations in High-Speed Steel.

    abstract::We have studied the transformation of carbides in AISI M42 high-speed steels in the temperature window used for forging. The annealing was found to result in the partial transformation of the large, metastable M2C carbides into small, more stable grains of M6C, with an associated change in the crystal orientation. In ...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Godec M,Večko Pirtovšek T,Šetina Batič B,McGuiness P,Burja J,Podgornik B

    更新日期:2015-11-05 00:00:00

  • Structural colour of unary and binary colloidal crystals probed by scanning transmission X-ray microscopy and optical microscopy.

    abstract::Colloidal crystals composed of micro- or nano- colloids have been investigated in various fields such as photonics due to their unique optical properties. Binary colloidal crystals have an outstanding potential for fine-tuning material properties by changing the components, concentration, or size of colloids. Because ...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Nho HW,Yoon TH

    更新日期:2017-09-29 00:00:00

  • Sperm whale long-range echolocation sounds revealed by ANTARES, a deep-sea neutrino telescope.

    abstract::Despite dedicated research has been carried out to adequately map the distribution of the sperm whale in the Mediterranean Sea, unlike other regions of the world, the species population status is still presently uncertain. The analysis of two years of continuous acoustic data provided by the ANTARES neutrino telescope...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: André M,Caballé A,van der Schaar M,Solsona A,Houégnigan L,Zaugg S,Sánchez AM,Castell JV,Solé M,Vila F,Djokic D,Adrián-Martínez S,Albert A,Anghinolfi M,Anton G,Ardid M,Aubert JJ,Avgitas T,Baret B,Barrios-Martí J,Ba

    更新日期:2017-04-12 00:00:00

  • Capacity of humic substances to complex with iron at different salinities in the Yangtze River estuary and East China Sea.

    abstract::The iron binding capacities (IBC) of fulvic acid (FA) and humic acid (HA) were determined in the salinity range from 5 to 40. The results indicated that IBC decreased while salinity increased. In addition, dissolved iron (dFe), FA and HA were also determined along the Yangtze River estuary's increasing salinity gradie...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Yang R,Su H,Qu S,Wang X

    更新日期:2017-05-03 00:00:00

  • Systematic biology analysis on photosynthetic carbon metabolism of maize leaf following sudden heat shock under elevated CO2.

    abstract::Plants would experience more complex environments, such as sudden heat shock (SHS) stress combined with elevated CO2 in the future, and might adapt to this stressful condition by optimizing photosynthetic carbon metabolism (PCM). It is interesting to understand whether this acclimation process would be altered in diff...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Qu M,Chen G,Bunce JA,Zhu X,Sicher RC

    更新日期:2018-05-18 00:00:00

  • Lithia/(Ir, Li2IrO3) nanocomposites for new cathode materials based on pure anionic redox reaction.

    abstract::Anionic redox reactions attributed to oxygen have attracted much attention as a new approach to overcoming the energy-density limits of cathode materials. Several oxides have been suggested as new cathode materials with high capacities based on anionic (oxygen) redox reactions. Although most still have a large portion...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Lee SY,Park YJ

    更新日期:2019-09-12 00:00:00

  • Microstructure analysis and mechanical properties of phosphorus-reinforced ZCuPb20Sn5 alloy.

    abstract::An investigation was carried out to assess the effect of the P content on the microstructure and mechanical properties of ZCuPb20Sn5 alloy. Alloys of various compositions, (0.05, 0.1, 0.2, 0.3, 0.5% wt.% P) were melted in a melting furnace under 1200 °C and cast into metal mould, the hardness, strength and elongation ...

    journal_title:Scientific reports

    pub_type: 杂志文章


    authors: Ren XY,Zhang X,Hong X,Ren J

    更新日期:2019-09-16 00:00:00