TRANSISTORS WITH CHANNEL AND SUB-CHANNEL REGIONS WITH DISTINCT COMPOSITIONS AND DIMENSIONS

• Main Authors: MURTHY ANAND S, NAM JU H, JAMBUNATHAN KARTHIK, BOWONDER ANUPAMA, GUHA BISWAJEET, KANG JUN SUNG, BEATTIE BRUCE E, GHANI TAHIR, GLASS GLENN A
• Format: Patent
• Language: Chinese; English
• Published: 21.04.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

Integrated circuits include fins including an upper/channel region and a lower/sub-channel region, the lower region having a first chemical composition and opposing sidewalls adjacent to an insulatormaterial, and the upper region having a second chemical composition. A first width indicates the distance between the opposing sidewalls of the lower region at a first location is at least 1 nm widerthan a second width indicating the distance between the opposing sidewalls of the upper region at a second location, the first location being within 10 nm of the second location (or otherwise relatively close to one another). The first chemical composition is distinct from the second chemical composition and includes a surface chemical composition at an outer surface of the opposing sidewalls of the lower region and a bulk chemical composition therebetween, the surface chemical composition including one or more of oxygen, nitrogen, carbon, chlorine, fluorine, and sulfur. 集成电路包括具有上部/沟道区和下部/亚沟道区的鳍，下部区域具有第一化学成分以及与绝缘体材料相邻的