Investigation of silicide-induced-dopant-activation for steep tunnel junction in tunnel field effect transistor (TFET)
- Authors
- Kim, Sihyun; Kwon, Dae Woong; Park, Euyhwan; Lee, Junil; Lee, Roongbin; Lee, Jong-Ho; Park, Byung-Gook
- Issue Date
- Feb-2018
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Citation
- SOLID-STATE ELECTRONICS, v.140, no.SI, pp.41 - 45
- Indexed
- SCIE
SCOPUS
- Journal Title
- SOLID-STATE ELECTRONICS
- Volume
- 140
- Number
- SI
- Start Page
- 41
- End Page
- 45
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/190946
- DOI
- 10.1016/j.sse.2017.10.013
- ISSN
- 0038-1101
- Abstract
- Numerous researches for making steep tunnel junction within tunnel field-effect transistor (TFET) have been conducted. One of the ways to make an abrupt junction is source/drain silicidation, which uses the phenomenon often called silicide-induced-dopant-segregation. It is revealed that the silicide process not only helps dopants to pile up adjacent to the metal-silicon alloy, also induces the dopant activation, thereby making it possible to avoid additional high temperature process. In this report, the availability of dopant activation induced by metal silicide process was thoroughly investigated by diode measurement and device simulation. Metal-silicon (MS) diodes having p(+) and n(+) silicon formed on the p-substrate exhibit the characteristics of ohmic and pn diodes respectively, for both the samples with and without high temperature annealing. The device simulation for TFETs with dopant-segregated source was also conducted, which verified enhanced DC performance.
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