摘要:
An epitaxially coated silicon wafer comprises a plane surface misoriented relative to a {110} crystal plane, wherein the direction of the single silicon crystal is tilted away by the angle θ from the normal to the wafer surface and the projection of the tilted direction forms an angle φ with the direction in the wafer, and θ is given by 0≦θ≦3° and 45°≦φ≦90°, as well as for all symmetrically equivalent directions.
摘要:
An epitaxially coated silicon wafer comprises a plane surface misoriented relative to a {110} crystal plane, wherein the direction of the single silicon crystal is tilted away by the angle θ from the normal to the wafer surface and the projection of the tilted direction forms an angle φ with the direction in the wafer, and θ is given by 0≦θ≦3° and 45°≦φ≦90°, as well as for all symmetrically equivalent directions.
摘要:
A support ring for supporting a monocrystalline silicon semiconductor wafer during a thermal treatment of the semiconductor wafer has outer and inner lateral surfaces and a curved surface extending from the outer lateral surface to the inner lateral surface, this curved surface serving for the placement of the semiconductor wafer. The curved surface has a radius of curvature of not less than 6000 mm and not more than 9000 mm for 300 mm diameter wafers, or a radius of curvature of not less than 9000 mm and not more than 14,000 mm for 450 mm diameter wafers. Use of the support ring during thermal treatment reduces slip and improves wafer nanotopography.
摘要:
A support ring for supporting a monocrystalline silicon semiconductor wafer during a thermal treatment of the semiconductor wafer has outer and inner lateral surfaces and a curved surface extending from the outer lateral surface to the inner lateral surface, this curved surface serving for the placement of the semiconductor wafer. The curved surface has a radius of curvature of not less than 6000 mm and not more than 9000 mm for 300 mm diameter wafers, or a radius of curvature of not less than 9000 mm and not more than 14,000 mm for 450 mm diameter wafers. Use of the support ring during thermal treatment reduces slip and improves wafer nanotopography.
摘要:
A silicon wafer having no epitaxially deposited layer or layer produced by joining to the silicon wafer, with a nitrogen concentration of 1·1013-8·1014 atoms/cm3, an oxygen concentration of 5.2·1017-7.5·1017 atoms/cm3, a central thickness BMD density of 3·108-2·1010 cm−3, a cumulative length of linear slippages ≦3 cm and a cumulative area of areal slippage regions ≦7 cm2, the front surface having 0.13 μm LSE in the DNN channel, a layer at least 5 μm thick, in which ≦1·104 COPs/cm3 with a size of ≧0.09 μm occur, and a BMD-free layer ≧5 μm thick. Such wafers may be produced by heat treating the silicon wafer, resting on a substrate holder, a specific substrate holder used depending on the wafer doping. For each holder, maximum heating rates are selected to avoid formation of slippages.
摘要:
A silicon wafer having no epitaxially deposited layer or layer produced by joining to the silicon wafer, with a nitrogen concentration of 1·1013-8·1014 atoms/cm3, an oxygen concentration of 5.2·1017-7.5·1017 atoms/cm3, a central thickness BMD density of 3·108-2·1010 cm−3, a cumulative length of linear slippages ≦3 cm and a cumulative area of areal slippage regions ≦7 cm2, the front surface having 0.13 μm LSE in the DNN channel, a layer at least 5 μm thick, in which ≦1·104 COPs/cm3 with a size of ≧0.09 μm occur, and a BMD-free layer ≧5 μm thick. Such wafers may be produced by heat treating the silicon wafer, resting on a substrate holder, a specific substrate holder used depending on the wafer doping. For each holder, maximum heating rates are selected to avoid formation of slippages.
摘要翻译:不具有通过与硅晶片接合而产生的外延沉积层或层的硅晶片,氮浓度为1.10×13×10 4原子/ cm 3, / SUP>,氧浓度为5.2.10±17.5×10 17原子/ cm 3,中心厚度BMD密度为3.10 直线滑移的累积长度<= 3cm,面积滑移区域的累积面积<= 7 在DNN通道中,前表面具有≥0.33μmLSE的氮诱发缺陷,至少5μm厚的层,其中<= 1.10×4 SUP >大于>0.09μm的COPs / cm 3> 3,并且不含BMD的层>5μm厚。 这样的晶片可以通过热处理硅晶片,放置在基板保持器上,根据晶片掺杂使用的特定的基板保持器来制造。 对于每个保持器,选择最大加热速率以避免形成滑动。
摘要:
A semiconductor wafer made from silicon which is doped with hydrogen. The hydrogen concentration is less than 5*1016 atcm−3 and greater than 1*1012 atcm−3. A method for producing a semiconductor wafer from silicon includes separating the semiconductor wafer from a silicon single crystal, with the single silicon crystal being pulled from a melt, in the presence of hydrogen, using the Czochralski method. The hydrogen partial pressure during the pulling of the single silicon crystal is less than 3 mbar.