雪飛 1927

San yue cai fenɡ( )

1 edition published in 2012 in Chinese and held by 5 WorldCat member libraries worldwide

Jue ze by Xuefei( Book )

2 editions published in 1973 in Chinese and held by 5 WorldCat member libraries worldwide

San yue cai feng( Book )

2 editions published in 2012 in Chinese and held by 4 WorldCat member libraries worldwide

The role of defects in fluorescent silicon carbide layers grown by sublimation epitaxy by Symposium G EMRS 2013 Spring Meeting( )

2 editions published in 2014 in English and held by 3 WorldCat member libraries worldwide

Donor-acceptor co-doped SiC is a promising light converter for novel monolithic all-semiconductor white LEDs due to its broad-band donor-acceptor pair luminescence and potentially high internal quantum efficiency. Besides sufficiently high doping concentrations in an appropriate ratio yielding short radiative lifetimes, long nonradiative lifetimes are crucial for efficient light conversion. The impact of different types of defects is studied by characterizing fluorescent silicon carbide layers with regard to photoluminescence intensity, homogeneity and efficiency taking into account dislocation density and distribution. Different doping concentrations and variations in gas phase composition and pressure are investigated

Gu piao mai mai jue qiao by Xuefei( )

2 editions published between 1991 and 1998 in Chinese and held by 3 WorldCat member libraries worldwide

Ben shu jie shao le duo zhong you xiao de mai mai ji qiao he shi ji fan li,Zhi dao ren men jin xing gu fen mai mai

Xing yue chuan shuo by Xuefei( Book )

in Chinese and held by 2 WorldCat member libraries worldwide

Application of genetic algorithms and fuzzy logic sets to quality function deployment by Xuefei( )

1 edition published in 1998 in English and held by 1 WorldCat member library worldwide

Honeycomb-inspired design of ultrafine SnO2@C nanospheres embedded in carbon film as anode materials for high performance lithium- and sodium-ion battery by Xiang Ao( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Tin oxide (SnO2) has been considered as one of the most promising anodes for advanced rechargeable batteries due to its advantages such as high energy density, earth abundance and environmental friendly. However, its large volume change during the Li-Sn/Na-Sn alloying and de-alloying processes will result in a fast capacity degradation over a long term cycling. To solve this issue, in this work we design and synthesize a novel honeycomb-like composite composing of carbon encapsulated SnO2 nanospheres embedded in carbon film by using dual templates of SiO2 and NaCl. Using these composites as anodes both in lithium ion batteries and sodium-ion batteries, no discernable capacity degradation is observed over hundreds of long term cycles at both low current density (100 mA g(-1)) and high current density (500 mA g(-1)). Such a good cyclic stability and high delivered capacity have been attributed to the high conductivity of the supported carbon film and hollow encapsulated carbon shells, which not only provide enough space to accommodate the volume expansion but also prevent further aggregation of SnO2 nanoparticles upon cycling. By engineering electrodes of accommodating high volume expansion, we demonstrate a prototype to achieve high performance batteries, especially high-power batteries. (C) 2017 Elsevier B.V. All rights reserved

Enhancing Photocatalytic Activity of NO Removal through an In Situ Control of Oxygen Vacancies in Growth of TiO2 by Xiaoling Shen( )

1 edition published in 2019 in English and held by 1 WorldCat member library worldwide

Although defects play an important role in the photocatalytic activity of TiO2, the mechanism of the photocatalytic activity related to different defects remains disputable. Moreover, the reported methods to introduce defects raise the preparation cost. In this work, different types of defects including O-vacancy cluster, surface O-vacancy, and bulk O-vacancy defects are in situ introduced in TiO2 by controlling the crystallization temperature. The medium-degree crystallinity TiO2 sample mainly containing surface O-vacancies exhibits the best NO removal activity. The systematic study of photocatalytic mechanism demonstrates that the surface O-vacancies significantly promote the adsorption of H2O molecules and improve charge transfer to the adsorbed H2O forming center dot OH, thus dramatically enhancing the photocatalytic NO removal activity. On the contrary, bulk O-vacancies neither help the adsorption of H2O molecules, nor improve the charge transfer to H2O

Qing chou sha ji by Xuefei( Book )

1 edition published in 2000 in Chinese and held by 1 WorldCat member library worldwide