Study on the effect of RTA ambient to shallow N+/P junction formation using PH3 plasma doping

Seung Woo Do, Byung Ho Song, Ho Jung, Seong Ho Kong, Jae Geun Oh, Jin Ku Lee, Min Ae Ju, Seung Joon Jeon, Ja Chun Ku, Yong Hyun Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Plasma doping (PLAD) process utilizing PH3 plasma to fabricate n-type junction with supplied bias of -1 kV and doping time of 60 sec under the room temperature is presented. The RTA process is performed at 900 °C for 10 sec. A defect-free surface is corroborated by TEM and DXRD analyses, and examined SIMS profiles reveal that shallow n+ junctions are formed with surface doping concentration of 1021atoms/cm3. The junction depth increases in proportion to the O2 gas flow when the N2 flow is fixed during the RTA process, resulting in a decreased sheet resistance. Measured doping profiles and the sheet resistance confirm that the n+ junction depth less than 52 nm and minimum sheet resistance of 313 Ω/ are feasible.

Original languageEnglish
Title of host publicationDoping Engineering for Front-End Processing
PublisherMaterials Research Society
Pages123-128
Number of pages6
ISBN (Print)9781605110400
DOIs
StatePublished - 2008
Event2008 MRS Spring Meeting - San Francisco, CA, United States
Duration: 25 Mar 200827 Mar 2008

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1070
ISSN (Print)0272-9172

Conference

Conference2008 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA
Period25/03/0827/03/08

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