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浏览/检索结果: 共58条，第1-10条 帮助

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Space-time structures, light trajectories and shadows for Kerr-Newman-AdS black hole with surrounding perfect fluid matter in Rastall gravity 期刊论文  OAI收割
PHYSICA SCRIPTA, 2024, 卷号: 99, 期号: 10
作者:  Ma, Ju;  Wang JC(王建成);  Qin, Long-hua;  Gao, Quan-gui;  Wang JC(王建成)
  |  收藏  |  浏览/下载：26/0  |  提交时间：2024/09/23
Unraveling the Energy Landscape and Energy Funneling Modulated by Hole Transport Layer for Highly Efficient Perovskite LEDs 期刊论文  OAI收割
LASER & PHOTONICS REVIEWS, 2021, 页码: 10
作者:  Li, Ting;  Xiang, Ting;  Wang, Miaosheng;  Zhang, Wei;  Shi, Jishan
  |  收藏  |  浏览/下载：62/0  |  提交时间：2021/03/17
An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242 期刊论文  OAI收割
Astronomy and Astrophysics, 2020, 卷号: 641, 页码: A101
作者:  HXMT
  |  收藏  |  浏览/下载：58/0  |  提交时间：2022/02/08
accretion  accretion disks  black hole physics  X-rays: binaries  time  Astrophysics - High Energy Astrophysical Phenomena  Abstract:
Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions.
Methods: Within the multitude of observations of Swift J1658.2-4242 during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst.
Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within 100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.  
Ag2S-doped core-shell nanostructures of Fe3O4@Ag3PO4 ultrathin film: Major role of hole in rapid degradation of pollutants under visible light irradiation 期刊论文  OAI收割
CHEMICAL ENGINEERING JOURNAL, 2019, 卷号: 366, 页码: 123-132
作者:  Shi, En;  Xu, Zhenlan;  Wang, Wenjing;  Xu, Yi;  Zhang, Yiheng
  |  收藏  |  浏览/下载：18/0  |  提交时间：2020/10/21
Hole mobility and conductance of iridium complex doped NPB emission layers for organic light-emitting diodes 期刊论文  OAI收割
SYNTHETIC METALS, 2018, 卷号: 244, 页码: 61-65
作者:  Wang, Ying;  Ding, Rongzheng;  Huang, Fobao;  Ma, Dongge
  |  收藏  |  浏览/下载：75/0  |  提交时间：2019/04/09
Thermally Activated Delayed Fluorescence Pendant Copolymers with Electron- and Hole-Transporting Spacers 期刊论文  OAI收割
ACS APPLIED MATERIALS & INTERFACES, 2018, 卷号: 10, 期号: 6, 页码: 5731-5739
作者:  Li, Chensen;  Wang, Yukun;  Sun, Dianming;  Li, Huihui;  Sun, Xiaoli
  |  收藏  |  浏览/下载：51/0  |  提交时间：2019/04/09
Polyethers containing 4-(carbazol-2-yl)-7-arylbenzo[c]-1,2,5-thiadiazole chromophores as solution processed materials for hole transporting layers of OLEDs 期刊论文  OAI收割
OPTICAL MATERIALS, 2018, 卷号: 76, 页码: 63-68
作者:  Krucaite, G.;  Tavgeniene, D.;  Xie, Z.;  Lin, X.;  Zhang, B.
  |  收藏  |  浏览/下载：17/0  |  提交时间：2019/04/09
Enhanced hole-dominated photocatalytic activity of doughnut-like porous g-C3N4 driven by down-shifted valance band maximum 会议论文  OAI收割
Newcastle, AUSTRALIA, JUL 10-13, 2016
作者:  Xiao, Jiadong;  Xie, Yongbing;  Li, Chuanhao;  Kim, Jae-Hong;  Tang, Kexin
  |  收藏  |  浏览/下载：44/0  |  提交时间：2019/06/21
Electronic Level Alignment at an Indium Tin OxidePbI2 Interface and Its Applications for Organic Electronic Devices 期刊论文  OAI收割
Acs Applied Materials & Interfaces, 2018, 卷号: 10, 期号: 10, 页码: 8909-8916
作者:  Song, Q. G.;  Lin, T.;  Sun, X.;  Chu, B.;  Su, Z. S.
  |  收藏  |  浏览/下载：16/0  |  提交时间：2019/09/17
Bi quantum dots on rutile TiO2 as hole trapping centers for efficient photocatalytic bromate reduction under visible light illumination 期刊论文  OAI收割
ELSEVIER SCIENCE BV, 2017, 卷号: 218, 页码: 111-118
作者:  Xiao, Jun;  Yang, Weiyi;  Li, Qi;  Li, Q (reprint author), Chinese Acad Sci, Inst Met Res, Environm Funct Mat Div, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
  |  收藏  |  浏览/下载：21/0  |  提交时间：2018/01/10