摘要:
A method of reducing implant dose loss is provided. The method includes performing multiple low dose implant steps with interspersed anneal steps, thereby avoiding amorphous-silicon formation. The anneal steps may be performed at high temperatures or at low temperatures.
摘要:
A lipid membrane structure containing an anti-membrane-type matrix metalloproteinase monoclonal antibody such as an anti-MT1-MMP monoclonal antibody as a component of the lipid membrane structure. Said structure can be utilized as a drug delivery system for efficiently delivering a medicinally active ingredient and/or a gene to tumor cells, neoplastic vessel and the like in which a membrane-type matrix metalloproteinase (MT-MMP) is expressed.
摘要:
A semiconductor device is provided with semiconducting sidewall spacers used in the formation of source/drain regions. The semiconducting sidewall spacers also reduce the possibility of suicide shorting through shallow source/drain junctions. Embodiments include doping the semiconducting sidewall spacers so that they serve as a source of impurities for forming source/drain extensions during activation annealing.
摘要:
An ultra-large-scale integrated (ULSI) circuit includes MOSFETs on an SOI substrate. The MOSFETs include elevated source and drain regions. The elevated source and drain regions are amorphized before doping. Neutral ion species can be utilized to amorphize the elevated source and drain region. Dopants are activated in a low-temperature rapid thermal anneal process.
摘要:
A semiconductor device is provided with a gate electrode having a substantially rectangular profile by forming a dielectric film prior to depositing the gate electrode layer. The dielectric film is patterned and etched to form regions having a rectangular profile separated by open regions. A gate electrode layer is then deposited followed by planarization to form gate electrodes having a substantially rectangular profile.
摘要:
A semiconductor device having reduced hot carrier degradation is achieved by doping the semiconductor substrate and gate oxide with deuterium. A conventional semiconductor device is formed with sequentially deposited metal layers and dielectric layers and a topside protective dielectric layer deposited thereon. Deuterium is introduced to the semiconductor device by using deuterium-containing reactants in at least one of the semiconductor manufacturing steps to passivate dangling silicon bonds at the silicon/oxide interface region.
摘要:
A method for forming a uniform and reliable oxide layer on the surface of a semiconductor substrate using projection gas immersion laser doping (P-GILD) is provided. A semiconductor substrate is immersed in an oxide enhancing compound containing atmosphere. The oxide enhancing compound containing atmosphere may include phosphorus, arsenic, boron or an equivalent. A 308 nm excimer laser is then applied to a portion of the substrate to induce incorporation of the oxide enhancing compound into a portion of the substrate. The deposition depth is dependent upon the strength of the laser energy directed at the surface of the substrate. A uniform and reliable oxide layer is then formed on the surface of the substrate by heating the substrate. The laser may be applied with a reflective reticle or mask formed on the substrate. An E.sup.2 PROM memory cell having a program junction region in a silicon substrate is also provided. An oxide layer is positioned between a program junction and a floating gate. The oxide layer is formed by a single or multiple thermal oxidation step(s) to have at least a first oxide thickness due to a GILD oxide enhancing compound underlying a region of the oxide having at least the first oxide thickness.
摘要:
Submicron-dimensioned MOS and/or CMOS transistors are fabricated by a process employing removable sidewall spacers made of a material, such as UV-nitride, which is readily etched in its as-deposited, undensified state but difficult-to-etch in its thermally annealed, densified state. The as-deposited, undensified spacers are removed by etching with dilute aqueous HF after implantation of moderately or heavily-doped source/drain regions but prior to annealing of the implants for dopant diffusion/activation and lattice damage relaxation. Lightly- or moderately doped, shallow-depth source/drain extensions are implanted and annealed after spacer removal.
摘要:
A semiconductor device having a retrograde channel profile is achieved by forming a retrograde impurity region in the surface portion of a semiconductor substrate, and subsequently forming a semiconductor layer on the retrograde impurity region at a predetermined thickness. The thickness of the semiconductor layer is controlled to localize the retrograde impurity region and its impurity concentration peak at a predetermined depth, thereby reducing the device's susceptibility to “reverse short channel effects.”
摘要:
A semiconductor device exhibiting a super-steep retrograde channel profile to reduce susceptibility to “latch up” is achieved by forming a high impurity concentration layer on a semiconductor substrate and forming a diffusion cap layer near the surface of the high impurity concentration layer. Subsequently, a low impurity concentration layer is formed on the diffusion cap layer of the high impurity concentration layer. The diffusion cap layer formed between the high and low impurity concentration layers substantially prevents the impurities contained in the high impurity concentration layer from diffusing into the overlying low impurity concentration layer, thereby achieving a super-steep retrograde channel profile.