Synthesis of High-quality 2D Semiconductors: Controlling Defects & Dopants

IEEE SFBA Nanotechnology Council Chapter

Andrew J Mannix
Department of Materials Science and Engineering, Stanford University

EAG Laboratories

San Francisco Bay Area IEEE Nanotechnology Council2020, 2017 &amp; 2014 Nanotechnology Council Outstanding Chapter (world-wide)2019, 2016 &amp; 2014 IEEE Outstanding Chapter (Western USA)2019, 2016 IEEE Outstanding Chapter (Santa Clara Valley)<a href="http://sites.ieee.org/sfbanano" title="http://sites.ieee.org/sfbanano" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">http://sites.ieee.org/sfbanano</a> <h3>Deterministic Synthesis of High-quality 2D Semiconductors: Controlling Defects, Dopants, and Polytype</h3> <h3>Andy Mannix</h3><h3>Assistant Professor of Materials Science and Engineering at Stanford University</h3><h3> </h3><h3>In-Person Meeting</h3>Thursday, August 27, 202611:30 AM: Networking, Pizza &amp; DrinksNoon -- 1 pm: Seminar--------Please register on Eventbrite before 9:30 AM on Thursday, August 27, 2026Walk-In attendance is welcomed but discouraged (cash or check; no credit cards)Please assist us in our event planning!If you decide not to attend... - please cancel reservations by 8:00 AM on Thursday, ** Tickets cancelled by 8 AM on August 27, 2026 will have payments refunded*** Note: Eventbrite Fees will not be refunded <h3>Day of Event Sign In &amp; Registration Information:</h3><h3>Please be prepared to present a Photo ID when entering EAG and signing in for the seminar. (Driver's license, or another government issued identification).</h3><h3>Registration information now also includes attendee Citizenship .</h3> Location:<h3>EAG Laboratories</h3>810 Kifer Road, Sunnyvale==&gt; Use corner entrance: Kifer Road / San Lucar Court==&gt; Do not enter at main entrance on Kifer Road(Parking: on street or in parking lot behind EAG)

<h3>Deterministic Synthesis of High-quality 2D Semiconductors: Controlling Defects, Dopants, and Polytype</h3> <h3>Abstract:</h3>Realizing the potential of 2D transition metal dichalcogenides (TMDs) for next-generation semiconductor technologies will require synthetic films that combine high crystalline quality with wafer-scale uniformity and precise control over electronic and optical properties.In this talk, I will present recent work from our group on precursor and reactor engineering to improve material quality while enabling control of composition, doping, and crystal structure.First, I will show how controlling precursor chemistry in solid-source CVD enables WSe2 with enhanced uniformity, low charged-defect densities, and high-performance p-type transistors.I will then discuss metal-organic CVD approaches for scalable growth of WS2, including substitutional doping, alloying, and selective formation of the ferroelectric 3R polytype with distinct nonlinear optical and valley properties.Finally, I will introduce patterned dopant sources that enable programmed lateral carrier-density profiles.Together, these results show how advances in synthesis can move 2D semiconductors beyond exfoliated laboratory specimens toward materials whose properties can be engineered during growth for future electronic and optoelectronic devices. Read more:<a href="https://arxiv.org/pdf/2509.07299" title="https://arxiv.org/pdf/2509.07299" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">High-current p-type transistors from precursor-engineered synthetic monolayer WSe2</a>

<h3>Speaker Bio:</h3><h3>Andy Mannix</h3>Assistant Professor of Materials Science and Engineering at Stanford UniversityHis research focuses on controlling the synthesis, structure, and interfaces of two-dimensional materials to uncover new electronic, optical, and quantum phenomena.His group combines materials growth, nanofabrication, automated experimentation, and advanced microscopy to develop new ways of engineering atomically thin semiconductors and van der Waals heterostructures.

If you have questions or problems with your registration, please contact <a href="https://www.eventbrite.com/e/thermal-analysis-for-thermal-challenges-with-heterogeneous-packaging-tickets-1249737030099?aff=oddtdtcreator" title="https://www.eventbrite.com/e/thermal-analysis-for-thermal-challenges-with-heterogeneous-packaging-tickets-1249737030099?aff=oddtdtcreator" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">LincolnBourne@gmail.com</a>* Please help us manage our event planning. When we have many walk-in attendees, it is difficult for us to order the proper amount of food for lunch. ** Tickets cancelled by 8 AM on August 27, will have payments refunded*** Note: Eventbrite Fees will not be refunded

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Synthesis of High-quality 2D Semiconductors: Controlling Defects & Dopants

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Synthesis of High-quality 2D Semiconductors: Controlling Defects & Dopants

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