能帶間隙 的英文怎麼說
中文拼音 [néngdàijiānxì]
能帶間隙
英文
band gap-
The dual - core air - guided pbgfs couplers are designed and decoupling phenomenon has been found. coupling properties of the pbgfs with adjacent two air cores are evaluated. the decoupling point, where no power transfers between two cores,
對具有兩個相鄰纖芯的空氣傳導光子帶隙光纖的傳導模式和耦合特性進行了理論分析，在所分析的結構中發現了無耦合點，在該點兩個相鄰纖芯之間不發生能量交換。When sulphurisation time is 30 minutes and sulphurisation temperature change from 180 to 240, the atomic ratio s / sn of the films increases from 0. 72 to 1. 08 and energy gap of the films increases from 1. 44ev to 1. 48ev with the increasing of the sulphurisation temperature
當硫化時間為30分鐘硫化溫度在240 ~ 310之間變化時，薄膜的s / sn值隨著硫化溫度的升高從1 . 08上升到1 . 96 ，能帶間隙隨著硫化溫度的升高從1 . 01ev上升到1 . 72ev 。The effect of leakage flow due to the upstream hub axial gap on the rotor performance and the mechanism of interaction between the hub leakage flow and the rotor blade passage flow were studied based on the numerical simulations of the flow fields of a transonic compressor rotor with upstream hub leakage
摘要為研究壓氣機轉子上游葉根軸向間隙泄漏流對轉子性能的影響程度以及泄漏流與轉子流場之間的相互作用機制，對帶有葉根泄漏流的跨聲壓氣機轉子流場進行了數值模擬。We discussed the main characteristic parameters of seismic kinesiology and dynamics of mine engineering fracture zone, including relative amplitude, phase time of wave crest, similarity factor, principal frequency band energy, 3 - d space time gradient and coherent coefficient et al., and puts forward the processing method of 3 - d seismic characteristic parameters about denoise - smoothing, generalization, correlation analysis, characteristic transformation ; and presents the method of pattern recognition of mine engineering fracture zone
摘要本文從時間域、頻率域、三維空間域介紹了礦山工程裂隙破碎帶主要的地震運動學、動力學屬性參數，包括相對振幅、波峰相位時間、相似系數、主頻帶能量、二維空間時間梯度和相干系數等，提出了礦山工程裂隙破碎帶三維地震屬性的去噪平滑、歸一化、相關分析、特徵變換的處理方法以及裂隙破碎帶的模式識別原理與方法，並用實例說明了該方法的應用效果。The dual - core air - guided photonic bandgap fiber couplers are designed and decoupling phenomenon has been found. coupling properties of the pbgfs with two adjacent air holes as fiber cores are analyzed. the decoupling point, where there is no
對具有兩個相鄰纖芯的空氣傳導光子帶隙光纖的傳導模式和耦合特性進行了理論分析，在所分析的結構中發現了無耦合點，在該波長處兩個相鄰纖芯之間不發生能量轉移。C60, a new type of semiconductor material, has many superior properties, such as wide forbidden band, direct band gap, rapid responding time, high optical damage threshold value and wide responding frequency band etc. these capabilities indicate that c60 film will be used widely in computer, integrate optical instrument and storage device etc. however, the preparation and the purification of c60 material affect the large - scale application at all times
C _ （ 60 ）薄膜作為新的半導體材料具備許多優越特性，如禁帶寬度大、直接帶隙、快速響應時間、高的光學損傷閥值、較寬的響應頻帶等，這些性能預示了c _ （ 60 ）薄膜在計算機、集成光學器件、光存儲器等方面具有廣闊的應用前景，但c _ （ 60 ）材料的制備與提純還一直是阻礙該新材料投入大規模實際應用的主要因素。With a broaden and likely direct band gap, porous silicon has a different band structure to that of the bulk silicon. thus the porous silicon can emit at room temperature
多孔硅改變了體硅的能帶結構，使禁帶展寬，並由間接帶隙向直接帶隙轉變，實現了室溫發光。1ev, which is close to the optimum value of the solar radiation. and it has high energy conversion. it is an important material used in the solar energy cells as absorption layer
Sns無毒、環保，其光學直接帶隙和間接帶隙分別為1 . 2 1 . 5ev和1 . 0 1 . 1ev ，與太陽輻射中的可見光有很好的光譜匹配，非常適合用作太陽能電池中的光吸收層，是一種很有潛力的太陽能電池材料。The seams divide the wall into several units and the hollow shear wall of r. c w ith vertical seams has small self - weight, small stiffness and good ductility. due to having air insulation, it has good energy saving capability. so this new type shear wall structure will be a kind of ductile structure with advanced seismic behavior
針對傳統剪力墻結構的弱點，本課題提出帶豎縫鋼筋混凝土空心剪力墻板結構，此種墻板在墻體上設有豎向縫隙，將整塊墻板分成若干墻肢單元，具有自重輕、剛度小、延性大的特點，由於墻板中間有空氣夾層，保溫、隔熱效果也較好，以此種墻板為主體的空心剪力墻結構體系是一種抗震性能優良的「延性剪力墻結構」 。The subst - itutional oxygen vacancies and tin contributing to its high conductivity. the high optical transmittance of ito films is a direct consequence of it being a wide band gap ( eg > 3ev )
Ito結構中的氧空位和錫摻雜使得它具有很強的導電性，較大的能帶間隙寬度（ e _ g 3ev ）使得它具有很強的光透明性。The properties of spontaneous emission depend not only on the relative position of the resonant frequency from the edge of the photonic band gap and the photonic mode density but also on the relative distance of the atomic space position from the sidebrand. and we study other property of spontaneous emission
其性質除了依賴于原子上能級與光子頻率帶隙邊緣的相對位置或光子態密度，還依賴于原子的空間位置與側支距離。並對原子的自發輻射的其它特性進行了分析。We also have analyzed the photoluminescence ( pl ) spectra of some zno films, it turns out that the emission of ultraviolet light comes from the radiative recombination of excitons within nano - crystal energy band - gap, and the pl peaks move to smaller wavelength because zn are substituted by fe, co, and cu, which cause the size of the film grains smaller and the effective band - gap bigger. the red emission of zno films is due to, on the one hand, decrease of the film grains size which causes the emission intensity smaller and smaller until it disappears abruptly, on the other hand, the transition of electrons from deep donor level of the oxygen vacancies to the valence band
另外，我們還對薄膜光致發光性質進行了分析和研究，結果表明：納米結構zno薄膜的紫外發光來源於帶間激子的輻射復合發光， pl譜的帶邊發射峰發生藍移是由於fe 、 co 、 cu對zn的替代使薄膜粒子的尺寸減小，使薄膜的有效帶隙增寬； zno薄膜的紅色發光，一方面是zno顆粒尺寸的減少，帶間的激子發射峰越來越弱直至猝滅，另一方面主要是與zno晶格中的o空位有關，由深能級復合發光引起紅光發射。Bulk silicon has an indirect energy bandage and is therefore highly inefficient as a light source. it is hard to get the goal of luminescence devices. nanocrystalline silion ( nc - si ) have many difference from bulk silicon, such as structure, the capability of optics and photoelectricity
單晶硅是間接帶隙材料，其帶間輻射復合效率非常低，難以達到發光器件的要求，與之相比，納米硅晶在結構、光學及光電性能方面與單晶硅不同，它在發光器件、光探測器件、光電集成以及傳感器等領域有更廣闊的應用前景。Basing on the studying on the optical properties of the porous silicon by photoluminescence technology, this paper discusses the energy band of the porous silicon which is related to the microstructure of the porous silicon, puts forward the main luminescence, calculates the band gap of the porous silicon by the empirical pseudopotental method in the end
摘要在光致發光技術對多孔硅光學性質研究的基礎上討論了與多孔硅的微觀結構有關的多孔硅的能帶結構，用能量贗勢法模擬計算出多孔硅的能帶間隙。分享友人