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101.
The effect of electronic orbital interactions on p-type doping tendency in ZnO series: First-principles calculations 总被引:1,自引:0,他引:1
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The electronic structures and optical properties of B3 ZnO series of
Znelectronic structures, optical properties, pseudopotential plane-wave method,
\\ \hspace*{1.9cm} p-type doping tendency, electronic structures, optical properties, pseudopotential plane-wave method,
\\ \hspace*{1.9cm} p-type doping tendency Project supported by the National Natural Science
Foundation of China (Grant No~10625416). 2007-04-25 2007-06-18 The electronic structures and optical properties of B3 ZnO series of Zn4X4-yMy(X :O, S, Se or Te; M = N, Sb, C1 or I; y = 0 or 1) are studied by first-principles calculations using a pseudopotential plane-wave method. The results show that Zn d-X p orbital interactions play an important role in the p-type doping tendency in zinc-based Ⅱ-Ⅵ semiconductors. In ZnX, with increasing atomic number of X, Zn d-X p orbital interactions decrease and Zn s-X p orbital interactions increase. Additionally, substituting group-V elements for X will reduce the Zn d-X p orbital interactions while substituting group-VII elements for X will increase the Zn d-X p orbital interactions. The results also show that group-V-doped ZnX and group-Ⅷ-doped ZnX exhibit different optical behaviours due to their different orbital interaction effects. 相似文献
102.
103.
MA Yue ZHOU De-feng ZHANG Jing-ping HAO Jie XIE Hai-ming ZHANG Xi-yan SU Zhong-min WANG Rong-shun + {** }Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Changchun P. R. China 《高等学校化学研究》2004,20(5):647-651
IntroductionSince the introduction of commercial lithium-ion batteries for the portable devices in the 1 990′s,the search for new anode materials with improvedenergy density and cycle- ability has never beenstopped[1— 5] .Graphite used as the early commercialanode material for lithium- ion batteries over otherkinds of materials in terms of its flat intercalationpotential and high cycle- ability[6,7] can′t keep pacewith the demand today because of its low capacity.In resentyears,the greateff… 相似文献
104.
105.
主要说明了Kolmogorov重对数律对p型Banach空间值独立、零均值的随机元列有类似于对实值的表现形式,从而揭示了空间的型p与重对数律的开方指数之间有着密切的关系. 相似文献
106.
Lai‐Cai Li Ping Deng Yuan‐Qiang Zhu Dong Zha An‐Min Tian Ming‐Hou Xu Ning‐Bew Wong 《International journal of quantum chemistry》2005,104(3):367-372
In this work ab initio molecular orbital methods were employed to study the coal combustion reaction mechanisms of tin oxidized by different oxidants, including HOCl, HCl, ClO, ClO2, NO3, CO2, and O2. Eleven reaction pathways were identified. The results show that Sn can react with HCl, ClOO, CO2, O2, and NO3 to form SnO and SnCl. SnO can be oxidized into SnCl by HOCl and HCl. SnCl can be further oxidized into a soluble compound, SnCl2. © 2005 Wiley Periodicals, Inc. Int J Quantum Chem, 2005 相似文献
107.
A Mannich-type reaction was used to attach flavin adenine dinucleotide (FAD) covalently to aminosilane derivatized indium/tin
oxide-coated glass plates. The aminosilane was activated with formaldehyde to give an intermediate that attached specifically
to the adenine amino group of FAD. The presence of the intermediate also was demonstrated by coupling hydroquinone to the
formaldehyde activated support. The immobilized FAD and hydroquinone were characterized by cyclic or differential pulse voltammetry.
The immobilized FAD was shown to reduce the overpotential for NADH oxidation by 180 mV. In keeping with results for FAD on
glassy carbon, FAD attached to indium/tin oxide at the adenine amino group did not lead to reconstitution of activity with
apoglucose oxidase.
On leave from University of Madras, India. 相似文献
108.
S.H. Luo Q. Wan W.L. Liu M. Zhang Z.T. Song C.L. Lin Paul K. Chu 《Progress in Solid State Chemistry》2005,33(2-4):287-292
SnO2 nanowhiskers were synthesized by thermal oxidation with and without a gold film as a catalyst. The SEM images reveal wire-like and rod-shaped nanowhiskers about several hundred micrometers in length and 100 nm in diameter. The three observed Raman peaks at 474, 632, and 774 cm−1 indicate the typical rutile phase which is in agreement with the X-ray diffraction results. The photoluminescence properties were measured at room temperature. The peaks at 342 nm corresponding to the excitation transitions from the conduction band to the valence band of the SnO2 nanowhiskers were not observed. However, a strong emission band at 600 nm was detected indicating the existence of oxygen vacancies in both samples. A new emission band at 398 nm was also observed in the sample with the gold film and it could be attributed to the near band-edge emission. 相似文献
109.
110.
Hiroyuki Hayashi Shota Katayama Rong Huang Kosuke Kurushima Isao Tanaka 《固体物理学:研究快报》2015,9(3):192-196
Undoped n‐ and p‐type tin monoxide (SnO) films have been selectively fabricated by pulsed laser deposition with a Sn target and careful control of oxygen partial pressure. The films are epitaxially grown in optimal growth conditions on yttria‐stabilized zirconia (YSZ) substrates with out‐of‐plane and in‐plane orientation relationships of (001)SnO//(001)YSZ and [110]SnO//[100]YSZ, respectively. Both Seebeck and Hall measurements show consistent results on the carrier types of the films. The electron Hall mobility is approximately 11 cm2/Vs at room temperature and the carrier activation energy is 0.14 eV for the n‐type film. The growth at increased oxygen partial pressure yields p‐type films, demonstrating the selective fabrication of both n‐ and p‐type SnO films without doping. (© 2015 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim) 相似文献