Papers by Author: Meng He

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Authors: Hui Bin Lu, K.J. Jin, Kun Zhao, Y.H. Huang, Meng He, Zhi Hui Chen, Y.L. Zhou, G.Z. Yang
Abstract: A series of all-perovskite oxide p-n heterojunctions (PNHs) as well as perovskite oxide and Si PNHs have been fabricated by a laser molecular-beam epitaxy. The good nonlinear and rectifying I-V characteristics in the PNHs, unusual and high sensitivity of positive magnetoresistance in low magnetic field in SrNbxTi1-xO3/La1-ySryMnO3 and La1-xSrxMnO3/Si PNHs, ps orders ultrafast photoelectric effect in La1-xSrxMnO3/Si PNHs, as well as ferroelectric property due to the interface enhancement in BaNb0.3Ti0.7O3/Si PNHs have been observed. It is expected that the further investigation on the PNHs could not only stimulate theoretical study on the mechanisms but also would open up new possibilities in the development and application of electrical devices.
Authors: Kun Zhao, Hui Bin Lu, Meng He
Abstract: Position-sensitive photodetectors, a useful class of sensor with a wide range of applications in automatization and measuring techniques, on the basis of a La0.7Sr0.3MnO3/Si heterojunction have been developed. Thin p-La0.7Sr0.3MnO3 films were grown on n-Si substrates by laser molecular beam epitaxy. The large lateral photovoltaic effect has been observed in response to excitation by ultraviolet laser spot irradiation. The position characteristics are symmetric to the zero and linear between the contacts. The devices work well under unbiased conditions and so are simple to configure for practical applications.
Authors: W.K. Wang, D.W. He, Meng He, F.X. Zhang, X.S. Lao, Claudio Shyinti Kiminami, L.L. Sun, Y.F. Xu, K.H. Kuo
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