Results 131 to 140 of about 218,035 (381)

Ultrahigh Hot Carrier Transient Photocurrent in Nanocrystal Arrays by Auger Recombination. [PDF]

, 2019
In this report, we show that a new mechanism for carrier transport in solution-processed colloidal semiconductor nanocrystal arrays exists at high excitation intensity on ultrafast time scales and allows for facile intrinsic transport between as-prepared
Alivisatos, A Paul, Gao, Jianbo, Kidon, Lyran, Rabani, Eran   +3 more
core   +1 more source

Transforming Cellulose Into Functional Three‐Dimensional Structures

Advanced Functional Materials, EarlyView.
Cellulose is promising for replacing synthetic polymers due to its excellent mechanical properties and low cost. This review highlights the recent advancements in transforming cellulose into functional 3D structures, including liquid gels and porous materials.
Xia Sun, Hao Sun, Penghui Zhu, Yonggang Wu, Anna Palmer, Feng Jiang   +5 more
wiley   +1 more source

Evolution of the Single-Nanocrystal Photoluminescence Linewidth with Size and Shell: Implications for Exciton-Phonon Coupling and the Optimization of Spectral Linewidths.

Nano letters (Print), 2016
The optimization of photoluminescence spectral linewidths in semiconductor nanocrystal preparations involves minimizing both the homogeneous and inhomogeneous contributions to the ensemble spectrum.
Jian Cui, A. P. Beyler, I. Coropceanu, Liam Cleary, Thomas R Avila, Yue Chen, J. Cordero, S. Leigh Heathcote, Daniel K. Harris, Ou Chen, Jianshu Cao, M. Bawendi   +11 more
semanticscholar   +1 more source

Ultrahigh‐resolution (λ/10) Femtosecond Laser Writing of Polymer‐Encapsulated Multicolor Perovskite Patterns Beyond the Diffraction Limit

Advanced Functional Materials, EarlyView.
Fabrication of in situ polymer‐encapsulated stable perovskite patterns of arbitrary shapes and pixel arrays with a resolution of 80 nm is reported by the femtosecond (fs) laser (800 nm) super‐resolution writing technique. The two‐photon absorption‐induced laser ablation is attributed to the achieved feature sizes as small as λ/10.
Xuebing Wen, Weiluo Ouyang, Zekai Chen, Yuyang Pu, Yifan Feng, Xiao‐Fang Jiang, Lakshminarayana Polavarapu, Guofu Zhou, Xiaowen Hu   +8 more
wiley   +1 more source

Efficient CdTe Nanocrystal/TiO2 Hetero-Junction Solar Cells with Open Circuit Voltage Breaking 0.8 V by Incorporating A Thin Layer of CdS Nanocrystal

Nanomaterials, 2018
Nanocrystal solar cells (NCs) allow for large scale solution processing under ambient conditions, permitting a promising approach for low-cost photovoltaic products.
Xianglin Mei, Bin Wu, Xiuzhen Guo, Xiaolin Liu, Zhitao Rong, Songwei Liu, Yanru Chen, Donghuan Qin, Wei Xu, Lintao Hou, Bingchang Chen   +10 more
doaj   +1 more source

A wearable multiplexed silicon nonvolatile memory array using nanocrystal charge confinement

Science Advances, 2016
An ultrathin, stretchable memory skin patch that can reliably store bio-signals such as heart rate is newly developed. Strategies for efficient charge confinement in nanocrystal floating gates to realize high-performance memory devices have been ...
Jaemin Kim, Donghee Son, Mincheol Lee, Changyeong Song, Jun‐Kyul Song, Ja Hoon Koo, Dong Jun Lee, Hyung Joon Shim, Ji Hoon Kim, Minbaek Lee, T. Hyeon, Dae‐Hyeong Kim   +11 more
semanticscholar   +1 more source

Surface magnetization in non-doped ZnO nanostructures

, 2009
We have investigated the magnetic properties of non-doped ZnO nanostructures by using {\it ab initio} total energy calculations. Contrary to many proposals that ferromagnetism in non-doped semiconductors should be induced by intrinsic point defects, we ...
Arantes, J. T., Dalpian, G. M., Fazzio, A., Schoenhalz, A. L.   +3 more
core   +1 more source

Synthesis of Zinc Sulfide Nanocrystals and Fabrication of Nanocrystal Superlattice

MATERIALS TRANSACTIONS, 2004
We report synthesis of zinc sulfide nanocrystals (NCs) via formation of polymetallic thiolate cages. Nearly monodisperse ZnS NCs with size ranging from 2.2 to 7 nm were obtained by thermolysis of S-Zn-dodecanethiol precursors. The electron diffraction pattern of zinc sulfide NCs indicates that precipitates are wurtzite or mixture of wurtzite and ...
Kuzuya, T., Tai, Y., Yamamuro, S., Hihara, T., Peng, D. L., Sumiyama, K.   +5 more
openaire   +2 more sources

Wavelength‐Dependent Differential Amplification of Raman Scattering by Chiral Gold Nanorods for Multiplexed Encoding

Advanced Functional Materials, EarlyView.
The SERS spectra of reporter molecules adsorbed on chiral gold nanorods depends on the handedness of circularly polarized light (CPL‐SERS). The bisignate plasmonic CD spectra of chiral nanorods provides wavelength‐dependent CPL‐SERS. Selective discrimination of chiral nanorod handedness and different Raman reporters allow highly sensitive codification ...
Andrés Serrano‐Freijeiro, Carlos Renero‐Lecuna, Manuel Obelleiro‐Liz, Víctor F. Martín, Diptesh Dey, José M. Taboada, George C. Schatz, Isabel Pastoriza‐Santos, Jorge Pérez‐Juste, Luis M. Liz‐Marzán   +9 more
wiley   +1 more source

Light emission from silicon with tin-containing nanocrystals

, 2015
Tin-containing nanocrystals, embedded in silicon, have been fabricated by growing an epitaxial layer of Si_{1-x-y}Sn_{x}C_{y}, where x = 1.6 % and y = 0.04 %, followed by annealing at various temperatures ranging from 650 to 900 degrees C.
Balling, Peter, Chevallier, Jacques, Gaiduk, Peter I., Hansen, John Lundsgaard, Jensen, Pia Bomholt, Julsgaard, Brian, Larsen, Arne Nylandsted, Roesgaard, Søren, Svane, Axel   +8 more
core   +2 more sources