摘要:
According to some embodiments of the invention, transistors of a semiconductor device have a channel region in a channel-portion hole. Methods include forming embodiments of the transistor having a channel-portion hole disposed in a semiconductor substrate. A channel-portion trench pad and a channel-portion layer are sequentially formed at a lower portion of the channel-portion hole. A word line insulating layer pattern and a word line pattern are sequentially stacked on the channel-portion layer and fill the channel-portion hole, disposed on the semiconductor substrate. The channel-portion layer is formed to contact the semiconductor substrate through a portion of sidewall of the channel-portion hole, and forms a channel region under the word line pattern. Punchthrough is prevented between electrode impurity regions corresponding to source and drain regions.
摘要:
According to some embodiments of the invention, transistors of a semiconductor device have a channel region in a channel-portion hole. Methods include forming embodiments of the transistor having a channel-portion hole disposed in a semiconductor substrate. A channel-portion trench pad and a channel-portion layer are sequentially formed at a lower portion of the channel-portion hole. A word line insulating layer pattern and a word line pattern are sequentially stacked on the channel-portion layer and fill the channel-portion hole, disposed on the semiconductor substrate. The channel-portion layer is formed to contact the semiconductor substrate through a portion of sidewall of the channel-portion hole, and forms a channel region under the word line pattern. Punchthrough is prevented between electrode impurity regions corresponding to source and drain regions.
摘要:
According to some embodiments of the invention, a method includes preparing a semiconductor substrate having an active region, doping channel ions in the active region, forming a planarized selective epitaxial growth (SEG) layer in a predetermined region of the active region doped with the channel ions, sequentially forming a gate insulating layer, a gate conductive layer and a gate hard mask layer on the semiconductor substrate having the planarized SEG layer, forming a gate pattern crossing the active region by sequentially patterning the gate hard mask layer and the gate conductive layer, the planarized SEG layer being located at one side of the gate pattern, and forming source/drain regions by implanting impurity ions using the gate pattern as an ion implantation mask. Accordingly, there is provided an asymmetric source/drain transistor capable of preventing a leakage current by diffusing the channel ions into the SEG layer.
摘要:
In a semiconductor device having a resistor and a method of fabricating the same, the device includes a semiconductor substrate having a cell region and a peripheral region. A lower interlayer insulating layer is disposed on the semiconductor substrate. A buffer pad is disposed on the lower interlayer insulating layer in the cell region. A capacitor is provided to have a storage node electrode disposed on the buffer pad, a plate electrode covering the storage node electrode, and a capacitor dielectric is interposed between the storage node electrode and the plate electrode. A lower resistor is disposed on the lower interlayer insulating layer in the peripheral region. 10 An upper resistor is disposed on the lower resistor to expose both ends of the lower resistor. An inter-resistor insulating layer is interposed at least between the lower resistor and the upper resistor. An upper interlayer insulating layer is disposed on the lower interlayer insulating layer to cover the capacitor, the lower resistor, and the upper resistor. A resistor interconnection line is disposed on the upper interlayer insulating layer, to contact a resistor contact plug penetrating the upper interlayer insulating layer and is electrically connected to a first end of the lower resistor and a first end of the upper resistor.
摘要:
Methods of fabricating a fin field effect transistor (FinFET) are disclosed. Embodiments of the invention provide methods of fabricating FinFETs by optimizing a method for forming the fin so that a short channel effect is prevented and high integration is achieved. Accordingly, the fin which has a difficulty in its formation using the current photolithography-etching technique may be readily formed.
摘要:
A finFET device includes a semiconductor substrate having specific regions surrounded with a trench. The trench is filled with an insulating layer, and recess holes are formed within the specific regions such that channel fins are formed by raised portions of the semiconductor substrate on both sides of the recess holes. Gate lines are formed to overlie and extend across the channel fins. Source/drain regions are formed at both ends of the channel fins and connected by the channel fins. Other embodiments are described and claimed.