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1. (WO2019066895) DOPED STI TO REDUCE SOURCE/DRAIN DIFFUSION FOR GERMANIUM NMOS TRANSISTORS
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Pub. No.: WO/2019/066895 International Application No.: PCT/US2017/054289
Publication Date: 04.04.2019 International Filing Date: 29.09.2017
IPC:
H01L 29/78 (2006.01) ,H01L 29/66 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29
Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having at least one potential-jump barrier or surface barrier; Capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof
66
Types of semiconductor device
68
controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified, or switched
76
Unipolar devices
772
Field-effect transistors
78
with field effect produced by an insulated gate
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29
Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having at least one potential-jump barrier or surface barrier; Capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof
66
Types of semiconductor device
Applicants:
INTEL CORPORATION [US/US]; 2200 Mission College Boulevard Santa Clara, California 95054, US
Inventors:
GLASS, Glenn A.; US
MURTHY, Anand S.; US
JAMBUNATHAN, Karthik; US
BOMBERGER, Cory C.; US
GHANI, Tahir; US
KAVALIEROS, Jack T.; US
CHU-KUNG, Benjamin; US
SUNG, Seung Hoon; US
CHOUKSEY, Siddharth; US
Agent:
ALBANEZE, Michael J.; US
Priority Data:
Title (EN) DOPED STI TO REDUCE SOURCE/DRAIN DIFFUSION FOR GERMANIUM NMOS TRANSISTORS
(FR) STI DOPÉE PERMETTANT DE RÉDUIRE LA DIFFUSION DE SOURCE/DRAIN DE TRANSISTORS NMOS AU GERMANIUM
Abstract:
(EN) Integrated circuit transistor structures are disclosed that reduce n-type dopant diffusion, such as phosphorous or arsenic, from the source region and the drain region of a germanium n-MOS device into adjacent shallow trench isolation (STI) regions during fabrication. The n-MOS transistor device may include at least 75% germanium by atomic percentage. In an example embodiment, the STI is doped with an n-type impurity, in regions of the STI adjacent to the source and/or drain regions, to provide dopant diffusion reduction. In some embodiments, the STI region is doped with an n-type impurity including Phosphorous in a concentration between 1 and 10% by atomic percentage. In some embodiments, the thickness of the doped STI region may range between 10 and 100 nanometers.
(FR) L'invention concerne des structures de transistor à circuit intégré qui réduisent la diffusion de dopant de type n, telle que de phosphore ou d'arsenic, à partir de la région de source et de la région de drain d'un dispositif n-MOS au germanium dans des régions d'isolation de tranchée peu profonde (STI) adjacentes pendant la fabrication. Le dispositif transistor n-MOS peut comprendre au moins 75 % de germanium en pourcentage atomique. Selon un mode de réalisation donné à titre d'exemple, la STI est dopée avec une impureté de type n, dans des régions de la STI adjacentes aux régions de source et/ou de drain, de façon à obtenir une réduction de diffusion de dopant. Selon certains modes de réalisation, la région de STI est dopée avec une impureté de type n comprenant du phosphore selon une concentration comprise entre 1 et 10 % en pourcentage atomique. Selon certains modes de réalisation, l'épaisseur de la région de STI dopée peut s'inscrire dans une plage de 10 à 100 nanomètres.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)