Open AccessNanocomposite‐Seeded Epitaxial Growth of Single‐Domain Lithium Niobate Thin Films for Surface Acoustic Wave Devices
Author(s) -
Paldi Robynne L.,
Qi Zhimin,
Misra Shikhar,
Lu Juanjuan,
Sun Xing,
Phuah Xin Li,
Kalaswad Matias,
Bischoff Jay,
Branch Darren W.,
Siddiqui Aleem,
Wang Haiyan
Publication year - 2021
Publication title -
advanced photonics research
Language(s) - English
Resource type - Journals
ISSN - 2699-9293
DOI - 10.1002/adpr.202000149
Subject(s) - lithium niobate , materials science , nanocomposite , epitaxy , thin film , piezoelectricity , optoelectronics , pulsed laser deposition , resonator , laser , nanotechnology , optics , composite material , layer (electronics) , physics
Epitaxial lithium niobate (LNO) thin films are an attractive material for devices across a broad range of fields, including optics, acoustics, and electronics. These applications demand high‐quality thin films without in‐plane growth domains to reduce the optical/acoustical losses and optimize efficiency. Twin‐free single‐domain‐like growth has been achieved previously, but it requires specific growth conditions that might be hard to replicate. In this work, a versatile nanocomposite‐seeded approach is demonstrated as an effective approach to grow single‐domain epitaxial lithium niobate thin films. Films are grown through a pulsed laser deposition method and growth conditions are optimized to achieve high‐quality epitaxial film. A comprehensive microstructure characterization is performed and optical properties are measured. A piezoelectric acoustic resonator device is developed to demonstrate the future potential of the nanocomposite‐seeded approach for high‐quality LNO growth for radio frequency (RF) applications.