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| 1 | Strategies to obtain pattern fidelity in nanowire growth from large-area surfaces patterned using nanoimprint lithography显示文摘位置控制 nanowire 生长为依靠轻排放或轻吸收的基于 nanowire 的 optoelectronic 部件是重要的。为收获应用程序的太阳能, nanowires 的稠密的数组被需要;然而,到获得稠密的 nanowire 数组的一个主要障碍是种子粒子排水量并且在 nanowire 生长以前在退火的舞台期间联合。这里,我们探索三不同策略改进 nanoimprint 平版印刷术为 nanowire 生长定义的大区域的催化剂粒子数组的模式保藏。首先,我们看到在 nanoimprint 平版印刷术以前对待生长底层的热改进模式保藏。第二,我们探索由在由修改生长过程退火以前在地方修理种子粒子改进模式保藏的可能性。并且第三,我们证明一个罪恶 x 生长面具罐头充分阻止种子粒子排水量。我们显示出这些策略怎么允许我们极大地与对太阳能电池应用合适的尺寸改进成年 InP nanowire 数组的模式忠实,在取样的区域上的最终完成的 100% 模式保藏。这些策略的通用性质通过 GaAs 和差距 nanowires 的合成被支持。 | Gaute Otnes Magnus Heurlin Mariusz Graczyk Jesper Wallentin Daniel Jacobsson Alexander Berg Ivan Maximov Magnus T. Borgstrom | 2016 | Nano Research2016，9，10： | 6 |
| 2 | In Situ Etching for Total Control Over Axial and Radial Nanowire Growth显示文摘We report a method using in situ etching to decouple the axial from the radial nanowire growth pathway,independent of other growth parameters.Thereby a wide range of growth parameters can be explored to improve the nanowire properties without concern of tapering or excess structural defects formed during radial growth.We demonstrate the method using etching by HCl during InP nanowire growth.The improved crystal quality of etched nanowires is indicated by strongly enhanced photoluminescence as compared to reference nanowires obtained without etching. | Magnus T.Borgström Jesper Wallentin Johanna Trägårdh Peter Ramvall Martin Ek LReine Wallenberg Lars Samuelson Knut Deppert | 2010 | Nano Research2010，3，4： | 4 |
| 3 | 3D X-ray microscopy with a CsPbBr3 nanowire scintillator显示文摘X-ray microscopy is an essential imaging method in many scientific fields,which can be extended to three-dimensional(3D)using tomography.Recently,metal halide perovskite(MHP)nanomaterials have become a promising candidate for X-ray scintillators,due to their high light yield,high spatial resolution,and easy fabrication.Tomography requires many projections and therefore scintillators with excellent stability.This is challenging for MHPs,which often suffer from fast degradation under X-ray irradiation and ambient conditions.Here,we demonstrate that MHP scintillators of CsPbBr3 nanowires(diameter:60 nm,length:5–9μm)grown in anodized aluminum oxide(CsPbBr3 NW/AAO)have sufficient stability for X-ray micro-tomography.A tomogram was taken with a Cu X-ray source over 41 h(dose 4.2 Gyair).During this period the scintillator brightness fluctuated less than 5%,which enabled a successful reconstruction.A long-term study with 2 weeks of continuous X-ray exposure(37.5 Gyair)showed less than 14%fluctuations in brightness and no long-term degradation,despite variations in the ambient relative humidity from 7.4%RH to 34.2%RH.The resolution was stable at(180±20)lp·mm−1,i.e.,about 2.8 micron.This demonstrates that CsPbBr3 NW/AAO scintillators are promising candidates for high resolution X-ray imaging detectors. | Hanna Dierks Zhaojun Zhang Nils Lamers Jesper Wallentin | 2023 | Nano Research2023，16，1： | 0 |
| 4 | Study of photocurrent generation in InP nanowire-based p+-i-n+ photodetectors显示文摘 | Vishal Jain Ali Nowzari Jesper Wallentin Magnus T. Borgstrom Maria E. Messing Damir Asoli Mariusz Graczyk Bemd Witzigmann Federico Capasso Lars Samuelson Hakan Pettersson | 2014 | Nano Research2014，7，4： | 0 |
| 5 | High resolution strain mapping of a single axially heterostructured nanowire using scanning X-ray diffraction显示文摘Axially heterostructured nanowires are a promising platform for next generation electronic and optoelectronic devices.Reports based on theoretical modeling have predicted more complex strain distributions and increased critical layer thicknesses than in thin films,due to lateral strain relaxation at the surface,but the understanding of the growth and strain distributions in these complex structures is hampered by the lack of high-resolution characterization techniques.Here,we demonstrate strain mapping of an axially segmented GalnP-lnP 190 nm diameter nanowire heterostructure using scanning X-ray diffraction.We systematically investigate the strain distribution and lattice tilt in three different segment lengths from 45 to 170 nm,obtaining strain maps with about 10^-4 relative strain sensitivity.The experiments were performed using the 90 nm diameter nanofocus at the NanoMAX beamline,taking advantage of the high coherent flux from the first diffraction limited storage ring MAX IV.The experimental results are in good agreement with a full simulation of the experiment based on a three-dimensional(3D)finite element model.The largest segments show a complex profile,where the lateral strain relaxation at the surface leads to a dome-shaped strain distribution from the mismatched interfaces,and a change from tensile to compressive strain within a single segment.The lattice tilt maps show a cross-shaped profile with excellent qualitative and quantitative agreement with the simulations.In contrast,the shortest measured InP segment is almost fully adapted to the surrounding GalnP segments. | Susanna Hammarberg Vilgaile Dagyte Lert Chayanun Megan O.Hill Alexander Wyke Alexander Bjorling Ulf Johansson Sebastian Kalbfleisch Magnus Heurlin Lincoln J.Lauhon Magnus T.Borgstrom Jesper Wallentin | 2020 | Nano Research2020，13，9： | 0 |
| 6 | Large-energy-shift photon upconversion in degenerately doped InP nanowires by direct excitation into the electron gas显示文摘在 nanostructures 认识到光子 upconversion 为象生物标记的、红外线的察觉者和太阳能电池那样的许多下一代的应用是重要的。因为他们能电子上容易被联系,特别地 nanowires 为光电子是吸引人的。这里,我们在高度做 n 的 InP nanowires 与大精力移动表明光子 upconversion。关键地,为在我们的系统的 upconversion 负责的机制不经由中间的状态依靠多光子吸收,因此消除需要让高光子流动完成 upconversion。表明的 upconversion 为利用 nanowireswith 铺平道路他们的固有的灵活性象在低光子流动也放单个 nanowiresfor 光子 upconversion 设备的电的 contactability 和能力那样,可能在优化结构击倒到单个光子水平。 | Kilian Mergenthaler Azhar Iqbal Jesper Wallentin Sebastian Lehmann Magnus T. Borgstrom Lars Samuelson Arkady Yartsev Mats-Erik Pistol | 2013 | Nano Research2013，6，10： | 0 |
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