摘要:
Disclosed herein is a semiconducting nanoparticle (100) comprising a one-dimensional semiconducting nanoparticle (102), for example a nanowire, having a first end and a second end; where the second end is opposed to the first end; and two first endcaps (108), one of which contacts the first end and the other of which contacts the second end respectively of the one-dimensional semiconducting nanoparticle; where the first endcap that contacts the first end comprises a first semiconductor and where the first endcap extends from the first end of the one-dimensional semiconducting nanoparticle to form a first nanocrystal heterojunction (103); where the first endcap that contacts the second end comprises a second semiconductor; where the first endcap extends from the second end of the one-dimensional semiconducting nanoparticle to form a second nanocrystal heterojunction (103); and where the first semiconductor and the second semiconductor are chemically different from each other.
摘要:
The invention relates to nano-wires which consist of or comprise semiconductor materials and are used for applications in photovoltaics and electronics and to a method for the production thereof. The nano-wires are characterized in that they are obtained by a novel method using novel precursors. The precursors represent compounds, or mixtures of compounds, each having at least one direct Si-Si and/or Ge-Si and/or Ge-Ge bond, the substituents of which consist of halogen and/or hydrogen, and in the composition of which the atomic ratio of substituent:metalloid atoms is at least 1:1.
摘要:
The present invention relates to providing layers of different thickness on vertical and horizontal surfaces (15, 20) of a vertical semiconductor device (1). In particular the invention relates to gate electrodes and the formation of precision layers (28) in semiconductor structures comprising a substrate (10) and an elongated structure (5) essentially standing up from the substrate. According to the method of the invention the vertical geometry of the device (1) is utilised in combination with either anisotropic deposition or anisotropic removal of deposited material to form vertical or horizontal layers of very high precision.
摘要:
A quantum well is formed in a substrate to define a hub, ports extending from the hub, and a deflective structure in the hub. Electrons move through the hub and ports according to the ballistic electron effect. Gates control the movement of the electrons, causing them to be incident on the deflective structure on one side or the other, thus controlling the direction in which they are deflected and the port through which they pass.
摘要:
A method is described for forming an element of a microelectronic circuit. A sacrificial layer is formed on an upper surface of a support layer. The sacrificial layer is extremely thin and uniform. A height-defining layer is then formed on the sacrificial layer, whereafter the sacrificial layer is etched away so that a well-defined gap is left-between an upper surface of the support layer and a lower surface of the height-defining layer. A monocrystalline semiconductor material is then selectively grown from a nucleation silicon site through the gap. The monocrystalline semiconductor material forms a monocrystalline layer having a thickness corresponding to the thickness of the original sacrificial layer.
摘要:
The present invention provides a quantum structure product (10) comprising a substrate (16) having quantum ridges (14) and quantum tips (24) on at least one surface thereof. In some embodiments of the invention quantum ridges (14) may support quantum wires (12) and the quantum tips (24) may support quantum dots (22). Grooves (18) which separate the quantum ridges (14) and quantum tips (24) from each other may be shallow or deep, and may contain organic molecules, fullerene tubes, and fullerene balls.