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The eight-band κ·p model is used to establish the energy band structure model of the type-II InAs/GaSb superlattice detectors with a cut-off wavelength of 10.5μm,and the best composition of M-structure in this type of device is calculated theoretically.In addition,we have also experimented on the devices designed with the best performance to investigate the effect of the active region p-type doping temperature on the quantum efficiency of the device.The results show that the modest active region doping temperature(Be:760℃)can improve the quantum efficiency of the device with the best performance,while excessive doping(Be:>760℃)is not conducive to improving the photo response.With the best designed structure and an appropriate doping concentration,a maximum quantum efficiency of 45% is achieved with a resistance-area product of 688?·cm^2,corresponding to a maximum detectivity of 7.35×10^11cm·Hz^1/2/W. 相似文献
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In this paper,applying the method of the reciprocal theorem,we give the stationarysolutions of the forced vibration of cantilever rectangular plates under uniformly distributedharmonic load and concentrated harmonic load acting at any point of the plates,the figuresand tables of number value of bending moment and the deflection amplitudes as well. 相似文献
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This paper treats the symmetrical bending of a uniformly loaded circular plate supported at k internal points. The boundary
displacement and slope are expanded in Fourier seriesr. The method proposed by [6] is applied. As both the governing differential
equation and boundary conditions are satisfied exactly, we therefore obtain the analytic expression of the transverse deflectional
equation of the circular plate. This is an easy and effective methed. 相似文献
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On the basis of[1] and [2], this paper further extends the Reciprocal Theorem to the thin elastic circular plates and proposes a general convenient new method, which can easily solve the transverse displacement equations of the circular plates with various complex edges and loads. 相似文献
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Xue-Yue Xu 《中国物理 B》2022,31(6):68503-068503
The etching and passivation processes of very long wavelength infrared (VLWIR) detector based on the InAs/GaSb/AlSb type-II superlattice have been studied. By studying the effect of each component in the citric acid solution (citric acid, phosphoric acid, hydrogen peroxide, deionized water), the best solution ratio is obtained. After comparing different passivation materials such as sulfide + SiO2, Al2O3, Si3N4 and SU8, it is found that SU8 passivation can reduce the dark current of the device to a greater degree. Combining this wet etching and SU8 passivation, the R0A of VLWIR detector with a mesa diameter of 500 μm is about 3.6 Ω ·cm2 at 77 K. 相似文献
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弹性矩形薄板受迫振动的功的互等定理法(Ⅲ)—悬臂矩形板 总被引:5,自引:0,他引:5
本文应用功的互等定理法给出了在均布谐载和在任意点受集中谐载作用下悬臂矩形板受迫振动的稳态解,并给出了有关弯矩和挠度幅值的图表. 相似文献
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应用功的互等定理计算弹性圆薄板挠曲面方程 总被引:1,自引:0,他引:1
本文在文献[1],[2]的基础上,进一步将功的互等定理推广应用于弹性圆薄板.提出一种求解具有复杂边界条件,受复杂载荷作用的圆板挠曲面方程的简便,通用的新方法. 相似文献
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On the basis of [1] and [2], this paper further extends the Reciprocal Theorem to the thin elastic circular plates and proposes
a general convenient new method, which can easily solve the transverse displacement equations of the circular plates with
various complex edges and loads. 相似文献