Pushing Sputtered HfO2-Based Ferroelectrics toward BEOL Compatibility
Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/Gutachten › Beitrag in Konferenzband › Beigetragen › Begutachtung
Beitragende
Abstract
In this work, we investigate the back-end-of-line (BEOL) compatibility of the TiN/Hf1-xZrxO2 (HZO)/TiN thin-film capacitors by exploiting the effect of sputtering power, ZrO2 content and process pressure. The variation of double remanent polarization (2Pr) suggests a crystal phase transformation in the HZO film when the sputtering power is altered. A change in the dielectric constant also supports this behavior. After tuning the process pressure, we could lower the required thermal budget for crystallization to 400°C, which is thermally compatible with BEOL processes. Moreover, the optimal sputtering parameters could reach 2Pr of 36 μC/cm2 with an endurance of up to 107 cycles. High 2Pr and good endurance achieved with low-Temperature annealing is a breakthrough for sputtered HfO2-based thin films and shows a promising future for integrating sputtered HZO into BEOL processes.
Details
| Originalsprache | Englisch |
|---|---|
| Titel | 2022 IEEE Nanotechnology Materials and Devices Conference (NMDC) |
| Erscheinungsort | Nanjing |
| Herausgeber (Verlag) | Institute of Electrical and Electronics Engineers (IEEE) |
| Seiten | 21-24 |
| Seitenumfang | 4 |
| ISBN (elektronisch) | 978-1-7281-7410-5 |
| ISBN (Print) | 978-1-7281-7411-2 |
| Publikationsstatus | Veröffentlicht - 2022 |
| Peer-Review-Status | Ja |
Publikationsreihe
| Reihe | IEEE Nanotechnology Materials and Devices Conference (NMDC) |
|---|
Konferenz
| Titel | 17th IEEE Nanotechnology Materials and Devices Conference |
|---|---|
| Kurztitel | NMDC 2022 |
| Veranstaltungsnummer | 17 |
| Dauer | 18 - 20 November 2022 |
| Webseite | |
| Bekanntheitsgrad | Internationale Veranstaltung |
| Ort | Zhenbao Holiday Hotel |
| Stadt | Nanjing |
| Land | China |
Externe IDs
| ORCID | /0000-0003-3814-0378/work/142256347 |
|---|
Schlagworte
ASJC Scopus Sachgebiete
Schlagwörter
- BEOL, ferroelectric, HZO, power, pressure, sputtering