Hybrid Devices by Selective and Conformal Deposition of PtSe2 at Low Temperatures. (16th August 2021)

• Record Type: Journal Article
• Authors: Prechtl, Maximilian; Parhizkar, Shayan; Hartwig, Oliver; Lee, Kangho; Biba, Josef; Stimpel‐Lindner, Tanja; Gity, Farzan; Schels, Andreas; Bolten, Jens; Suckow, Stephan; Giesecke, Anna Lena; Lemme, Max C.; Duesberg, Georg S.
• Is Part Of: Advanced functional materials. Volume 31:Number 46(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-08-16
• Subjects: 2D materials -- area selective deposition -- chemical sensors -- conformal deposition -- hybrid devices -- infrared photodetectors -- platinum diselenide; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202103936
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: 2D materials display very promising intrinsic material properties, with multiple applications in electronics, photonics, and sensing. In particular layered platinum diselenide has shown high potential due to its layer‐dependent tunable bandgap, low‐temperature growth, and high environmental stability. Here, the conformal and area selective (AS) low‐temperature growth of layered PtSe2 is presented defining a new paradigm for 2D material integration. The thermally‐assisted conversion of platinum which is deposited by AS atomic layer deposition to PtSe2 is demonstrated on various substrates with a distinct 3D topography. Further the viability of the approach is presented by successful on‐chip integration of hybrid semiconductor devices, namely by the manufacture of a highly sensitive ammonia sensors channel with 3D topography and fully integrated infrared‐photodetectors on silicon photonics waveguides. The presented methodologies of conformal and AS growth therefore lay the foundation for new design routes for the synthesis of more complex hybrid structures with 2D materials. Abstract : Platinum atomic layer deposition and thermal assisted conversion are combined to conformally and selectively coat structured substrates with layered platinum diselenide. The viability of the approach to controllably fabricate hybrid devices with a 2D material is demonstrated by the manufacture of a structured gas sensor and a fully integrated infrared photodetector on a Si‐waveguide.