High- Quality Diamond for Scientific Applications: Synthesis, Characterization and Promising Developments

Availability and production capabilities in diamond are rapidly expanding. To enable nextgeneration diamond-based solutions, particularly in the quantum and semiconductor realms, WD Advanced Materials (“WDAM”), in cooperation with key industry collaborators, has developed new processes for the synthesis of large-scale single-crystal diamond wafers for electronic applications. Through this talk, led by Chief Technology Officer John Ciraldo, WDAM will share an overview of recent product development breakthroughs supporting these emerging technologies, including R&D results, output from the D2 SCALE under DARPA’s LADDIS initiative, and the latest on a new U.S.-based consortium, created to supply synchrotron-grade diamond to the national market through the DOE ARDAP program. WDAM will share third-party characterization data demonstrating exceptional material quality characteristics coupled with large substrate sizes, including anonymized comparisons to other commercially available products. In furtherance of the team’s form factor expansion efforts, WDAM will also present 13mm+ wafers with full x-ray mapping, highlighting narrow rocking curves of about 30 arcseconds, ultra-high doping concentrations, and evidence of strong electronic transport properties. The discussion will conclude with a summary of new material science process and technology solutions developed at WDAM, including defect mitigation; selective patterning and deposition; heterostacks (e.g. PN/PIN junctions); and continued scale in both material size and quality.