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    • 4. 发明授权
    • Hetero-junction photovoltaic device and method of fabricating the device
    • 异质结光伏器件及其制造方法
    • US08647915B2
    • 2014-02-11
    • US12974425
    • 2010-12-21
    • Tolga AytugDavid K. ChristenMariappan Parans ParanthamanÖzgur Polat
    • Tolga AytugDavid K. ChristenMariappan Parans ParanthamanÖzgur Polat
    • H01L31/0352H01L31/18
    • H01L31/035281H01L31/032H01L31/047H01L31/072H01L31/18Y02E10/50
    • A hetero-junction device and fabrication method in which phase-separated n-type and p-type semiconductor pillars define vertically-oriented p-n junctions extending above a substrate. Semiconductor materials are selected for the p-type and n-type pillars that are thermodynamically stable and substantially insoluble in one another. An epitaxial deposition process is employed to form the pillars on a nucleation layer and the mutual insolubility drives phase separation of the materials. During the epitaxial deposition process, the orientation is such that the nucleation layer initiates propagation of vertical columns resulting in a substantially ordered, three-dimensional structure throughout the deposited material. An oxidation state of at least a portion of one of the p-type or the n-type semiconductor materials is altered relative to the other, such that the band-gap energy of the semiconductor materials differ with respect to stoichiometric compositions and the device preferentially absorbs particular selected bands of radiation.
    • 一种异相结器件和制造方法,其中相分离的n型和p型半导体柱限定在衬底上方延伸的垂直取向的p-n结。 选择半导体材料用于热力学稳定且基本上彼此不溶的p型和n型支柱。 使用外延沉积工艺在成核层上形成支柱,并且相互不溶性驱动材料的相分离。 在外延沉积工艺期间,取向是使成核层开始垂直列的传播,导致整个沉积材料的基本有序的三维结构。 p型或n型半导体材料中的一种的至少一部分的氧化态相对于另一种改变,使得半导体材料的带隙能量相对于化学计量组成不同,并且器件优先 吸收特定选定的辐射带。